MEDROXYPROGESTERONE ACETATE tablet

Drug Labeling and Warnings

Drug Details [pdf]

SPL UNCLASSIFIED

Rx only

 

WARNING: CARDIOVASCULAR DISORDERS, BREAST CANCER AND PROBABLE DEMENTIA FOR ESTROGEN PLUS PROGESTIN THERAPY

Cardiovascular Disorders and Probable Dementia

Estrogen plus progestin therapy should not be used for the prevention of cardiovascular disease or dementia. (See CLINICAL STUDIESand WARNINGS, Cardiovascular Disordersand Probable Dementia. )

The Women’s Health Initiative (WHI) estrogen plus progestin substudy reported an increased risk of deep vein thrombosis (DVT), pulmonary embolism (PE), stroke and myocardial infarction (MI) in postmenopausal women (50 to 79 years of age) during 5.6 years of treatment with daily oral conjugated estrogens (CE) [0.625 mg] combined with medroxyprogesterone acetate (MPA) [2.5 mg], relative to placebo. (See CLINICAL STUDIESand WARNINGS, Cardiovascular Disorders. )

The WHI Memory Study (WHIMS) estrogen plus progestin ancillary study reported an increased risk of developing probable dementia in postmenopausal women 65 years of age or older during 4 years of treatment with daily CE (0.625 mg) combined with MPA (2.5 mg), relative to placebo. It is unknown whether this finding applies to younger postmenopausal women. (See CLINICAL STUDIESand WARNINGS,  Probable Dementiaand  PRECAUTIONS, Geriatric Use. )

Breast Cancer

The WHI estrogen plus progestin substudy demonstrated an increased risk of invasive breast cancer. (See CLINICAL STUDIESand WARNINGS,  Malignant Neoplasm,  Breast Cancer. )

In the absence of comparable data, these risks should be assumed to be similar for other doses of CE and MPA, and other combinations and dosage forms of estrogens and progestins.

Progestins with estrogens should be prescribed at the lowest effective doses and for the shortest duration consistent with treatment goals and risks for the individual woman.

 

DESCRIPTION

Medroxyprogesterone acetate tablets, USP contain medroxyprogesterone acetate, USP which is a derivative of progesterone. It is a white to off-white, odorless crystalline powder, stable in air, melting between 200 and 210°C. It is freely soluble in chloroform, soluble in acetone and in dioxane, sparingly soluble in alcohol and in methanol, slightly soluble in ether, and insoluble in water.

The chemical name for medroxyprogesterone acetate is pregn-4-ene-3, 20-dione, 17-(acetyloxy)-6-methyl-, (6α)-. The structural formula is:

                                     C 24H 34O 4        M.W. 386.53

Each medroxyprogesterone acetate tablet for oral administration contains 2.5 mg, 5 mg or 10 mg of medroxyprogesterone acetate, USP and the following inactive ingredients: crospovidone, lactose monohydrate, magnesium stearate, methylcellulose, pregelatinized corn starch, and sodium lauryl sulfate.

 

CLINICAL PHARMACOLOGY

Table 1. Mean (SD) Pharmacokinetic Parameters for Medroxyprogesterone Acetate (MPA)

Tablet Strength	C max (ng/mL)	T max (h)	AUC 0-(inf) (ng-h/mL)	t 1/2 (h)	Vd/f (L)	CL/f (mL/min)
Single Dose
2 x 10 mg	1.01 (0.599)	2.65 (1.41)	6.95 (3.39)	12.1 (3.49)	78024 (47220)	64110 (42662)
8 x 2.5 mg	0.805 (0.413)	2.22 (1.39)	5.62 (2.79)	11.6 (2.81)	62748 (40146)	74123 (35126)
Multiple Dose
10 mg *	0.71 (0.35)	2.83 (1.83)	6.01 (3.16)	16.6 (15.0)	40564 (38256)	41963 (38402)

*Following Day 7 dose

CLINICAL STUDIES

<table border="1" cellpadding="5" cellspacing="0" width="800px">
<caption>Table 2. Number (%) of Endometrial Biopsy Changes Since Baseline After 3 Years of Treatment*</caption>
<colgroup></colgroup>
<tbody>
<tr>
<td>Histological Results</td>
<td>Placebo (n=119)</td>
<td>CEE ^† (n=119)</td>
<td>Medroxyprogesterone Acetate ^‡ + CEE (n=118)</td>
</tr>
<tr>
<td>Normal/No hyperplasia (%)</td>
<td>116 (97)</td>
<td>45 (38)</td>
<td>112 (95)</td>
</tr>
<tr>
<td>Simple (cystic) hyperplasia (%)</td>
<td>1 (1)</td>
<td>33 (28)</td>
<td>4 (3)</td>
</tr>
<tr>
<td>Complex (adenomatous) hyperplasia (%)</td>
<td>1 (1)</td>
<td>27 (22)</td>
<td>2 (2)</td>
</tr>
<tr>
<td>Atypia (%)</td>
<td>0</td>
<td>14 (12)</td>
<td>0</td>
</tr>
<tr>
<td>Adenocarcinoma (%)</td>
<td>1 (1)</td>
<td>0</td>
<td>0</td>
</tr>
<tr>
<td colspan="4">
^* Includes most extreme abnormal result<br />
^† CEE = conjugated equine estrogens 0.625 mg/day<br />
^‡ Medroxyprogesterone acetate = medroxyprogesterone acetate tablets 10 mg/day for 12 days
</td>
</tr>
</tbody>
</table>
<table border="1" cellpadding="5" cellspacing="0" width="800px">
<caption>Table 3. Number (%) of Women with Endometrial Hyperplasia at 1 Year</caption>
<colgroup></colgroup>
<tbody>
<tr>
<td></td>
<td>CEE ^* (n=283)</td>
<td>MPA ^† + CEE ^* MPA 5 mg (n=277)</td>
<td>MPA 10 mg (n=272)</td>
</tr>
<tr>
<td>Cystic hyperplasia (%)</td>
<td>55 (19)</td>
<td>3 (1)</td>
<td>0</td>
</tr>
<tr>
<td>Adenomatous hyperplasia without atypia</td>
<td>2 (1)</td>
<td>0</td>
<td>0</td>
</tr>
<tr>
<td colspan="4">
^* CEE = conjugated equine estrogen 0.625 mg every day of a 28-day cycle.<br />
^† Cyclic medroxyprogesterone acetate on days 15 to 28
</td>
</tr>
</tbody>
</table>
<table border="1" cellpadding="5" cellspacing="0" width="800px">
<caption>Table 4: RELATIVE AND ABSOLUTE RISK SEEN IN THE ESTROGEN PLUS PROGESTIN SUBSTUDY OF WHI AT AN AVERAGE OF 5.6 YEARS ^a,b</caption>
<colgroup></colgroup>
<tbody>
<tr>
<td>Event</td>
<td>Relative Risk CE/MPA vs placebo (95% nCI ^c)</td>
<td>CE/MPA n = 8,506</td>
<td>Placebo n = 8,102</td>
</tr>
<tr>
<td></td>
<td colspan="3">Absolute Risk per 10,000 Women-Years</td>
</tr>
<tr>
<td>CHD events<br />
<em>Non-fatal MI</em><br />
<em>CHD death</em></td>
<td>1.23 (0.99 to 1.53)<br />
<em>1.28 (1.00 to 1.63)</em><br />
<em>1.10 (0.70 to 1.75)</em></td>
<td>41<br />
<em>31</em><br />
<em>8</em></td>
<td>34<br />
<em>25</em><br />
<em>8</em></td>
</tr>
<tr>
<td>All strokes</td>
<td>1.31 (1.03 to 1.68)</td>
<td>33</td>
<td>25</td>
</tr>
<tr>
<td><em>Ischemic stroke</em></td>
<td><em>1.44 (1.09 to 1.90)</em></td>
<td><em>26</em></td>
<td><em>18</em></td>
</tr>
<tr>
<td>Deep vein thrombosis ^d</td>
<td>1.95 (1.43 to 2.67)</td>
<td>26</td>
<td>13</td>
</tr>
<tr>
<td>Pulmonary embolism</td>
<td>2.13 (1.45 to 3.11)</td>
<td>18</td>
<td>8</td>
</tr>
<tr>
<td>Invasive breast cancer ^e</td>
<td>1.24 (1.01 to 1.54)</td>
<td>41</td>
<td>33</td>
</tr>
<tr>
<td>Colorectal cancer</td>
<td>0.61 (0.42 to 0.87)</td>
<td>10</td>
<td>16</td>
</tr>
<tr>
<td>Endometrial cancer ^d</td>
<td>0.81 (0.48 to 1.36)</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>Cervical cancer ^d</td>
<td>1.44 (0.47 to 4.42)</td>
<td>2</td>
<td>1</td>
</tr>
<tr>
<td>Hip fracture</td>
<td>0.67 (0.47 to 0.96)</td>
<td>11</td>
<td>16</td>
</tr>
<tr>
<td>Vertebral fractures ^d</td>
<td>0.65 (0.46 to 0.92)</td>
<td>11</td>
<td>17</td>
</tr>
<tr>
<td>Lower arm/wrist fractures ^d</td>
<td>0.71 (0.59 to 0.85)</td>
<td>44</td>
<td>62</td>
</tr>
<tr>
<td>Total fractures ^d</td>
<td>0.76 (0.69 to 0.83)</td>
<td>152</td>
<td>199</td>
</tr>
<tr>
<td>Overall mortality ^f</td>
<td>1.00 (0.83 to 1.19)</td>
<td>52</td>
<td>52</td>
</tr>
<tr>
<td>Global Index ^g</td>
<td>1.13 (1.02 to 1.25)</td>
<td>184</td>
<td>165</td>
</tr>
<tr>
<td colspan="4">
^a. Adapted from numerous WHI publications. WHI publications can be viewed on the NHLBI website.<br />
^b. Results are based on centrally adjudicated data.<br />
^c. Nominal confidence intervals unadjusted for multiple looks and multiple comparisons.<br />
^d. Not included in “global index”.<br />
^e. Includes metastatic and non-metastatic breast cancer, with the exception of in situ breast cancer.<br />
^f. All deaths, except from breast or colorectal cancer, definite or probable CHD, PE or cerebrovascular disease.<br />
^g. A subset of the events was combined in a “global index”, defined as the earliest occurrence of CHD events, invasive breast cancer, stroke, pulmonary embolism, colorectal cancer, hip fracture, or death due to other causes.
</td>
</tr>
</tbody>
</table>

INDICATIONS & USAGE

Medroxyprogesterone acetate tablets, USP are indicated for the treatment of secondary amenorrhea and abnormal uterine bleeding due to hormonal imbalance in the absence of organic pathology, such as fibroids or uterine cancer. They are also indicated for use in the prevention of endometrial hyperplasia in nonhysterectomized postmenopausal women who are receiving daily oral conjugated estrogens 0.625 mg tablets.

 

CONTRAINDICATIONS

Medroxyprogesterone acetate is contraindicated in women with any of the following conditions:

1. Undiagnosed abnormal genital bleeding.
2. Known, suspected, or history of breast cancer.
3. Known or suspected estrogen- or progesterone-dependent neoplasia.
4. Active DVT, PE, or a history of these conditions
5. Active arterial thromboembolic disease (for example, stroke and MI), or a history of these conditions.
6. Known anaphylactic reaction or angioedema to medroxyprogesterone acetate.
7. Known liver impairment or disease.
8. Known or suspected pregnancy.

 

WARNINGS

See BOXED WARNINGS.

 

An increased risk of PE, DVT, stroke, and MI has been reported with estrogen plus progestin therapy. Should any of these events occur or be suspected, estrogen plus progestin therapy should be discontinued immediately.

Risk factors for arterial vascular disease (for example, hypertension, diabetes mellitus, tobacco use, hypercholesterolemia, and obesity) and/or venous thromboembolism (VTE) (for example, personal history or family history of VTE, obesity, and systemic lupus erythematosus) should be managed appropriately.

 

In the WHI estrogen plus progestin substudy, a statistically significant increased risk of stroke was reported in women 50 to 79 years of age receiving CE (0.625 mg) plus MPA (2.5 mg) compared to women in the same age group receiving placebo (33 versus 25 per 10,000 women-years). (See CLINICAL STUDIES. ) The increase in risk was demonstrated after the first year and persisted. Should a stroke occur or be suspected, estrogen plus progestin therapy should be discontinued immediately.

 

In the WHI estrogen plus progestin substudy, there was a statistically non-significant increased risk of CHD events reported in women receiving daily CE (0.625 mg) plus MPA (2.5 mg) compared to women receiving placebo (41 versus 34 per 10,000 women-years). An increase in relative risk was demonstrated in year 1, and a trend toward decreasing relative risk was reported in years 2 through 5.

In postmenopausal women with documented heart disease (n = 2,763, average 66.7 years of age), in a controlled clinical trial of secondary prevention of cardiovascular disease (Heart and Estrogen/Progestin Replacement Study [HERS]), treatment with daily CE (0.625 mg) plus MPA (2.5 mg) demonstrated no cardiovascular benefit. During an average follow-up of 4.1 years, treatment with CE plus MPA did not reduce the overall rate of CHD events in postmenopausal women with established coronary heart disease. There were more CHD events in the CE plus MPA-treated group than in the placebo group in year 1, but not during the subsequent years. Two thousand three hundred and twenty-one (2,321) women from the original HERS trial agreed to participate in an open label extension of HERS, HERS II. Average follow-up in HERS II was an additional 2.7 years, for a total of 6.8 years overall. Rates of CHD events were comparable among women in the CE plus MPA group and the placebo group in HERS, HERS II, and overall.

 

In the WHI estrogen plus progestin substudy, a statistically significant 2-fold greater rate of VTE (DVT and PE) was reported in women receiving daily CE (0.625 mg) plus MPA (2.5 mg) compared to women receiving placebo (35 versus 17 per 10,000 women-years). Statistically significant increases in risk for both DVT (26 versus 13 per 10,000 women-years) and PE (18 versus 8 per 10,000 women-years) were also demonstrated. The increase in VTE risk was demonstrated during the first year and persisted. (See CLINICAL STUDIES). Should a VTE occur or be suspected, estrogen plus progestin therapy should be discontinued immediately.

If feasible, estrogens plus progestins should be discontinued at least 4 to 6 weeks before surgery of the type associated with an increased risk of thromboembolism, or during periods of prolonged immobilization.

 

The WHI substudy of daily CE (0.625 mg)-alone provided information about breast cancer in estrogen-alone users. In the WHI estrogen-alone substudy, after an average follow-up of 7.1 years, daily CE-alone was not associated with an increased risk of invasive breast cancer [relative risk (RR) 0.80] compared to placebo (see CLINICAL STUDIES).

After a mean follow-up of 5.6 years, the estrogen plus progestin substudy reported an increased risk of invasive breast cancer in women who took daily CE plus MPA. In this substudy, prior use of estrogen-alone or estrogen plus progestin therapy was reported by 26 percent of the women. The relative risk of invasive breast cancer was 1.24, and the absolute risk was 41 versus 33 cases per 10,000 women-years, for CE plus MPA compared with placebo. Among women who reported prior use of hormone therapy, the relative risk of invasive breast cancer was 1.86, and the absolute risk was 46 versus 25 cases per 10,000 women-years, for CE plus MPA compared with placebo. Among women who reported no prior use of hormone therapy, the relative risk of invasive breast cancer was 1.09, and the absolute risk was 40 versus 36 cases per 10,000 women-years, for CE plus MPA compared with placebo. In the same substudy, invasive breast cancers were larger, were more likely to be node positive, and were diagnosed at a more advanced stage in the CE (0.625 mg) plus MPA (2.5 mg) group compared with the placebo group. Metastatic disease was rare with no apparent difference between the two groups. Other prognostic factors such as histologic subtype, grade, and hormone receptor status did not differ between the groups. (See CLINICAL STUDIES. )

Consistent with the WHI clinical trials, observational studies have also reported an increased risk of breast cancer for estrogen plus progestin therapy, and a smaller, increased risk for estrogen-alone therapy, after several years of use. One large meta-analysis of prospective cohort studies reported increased risks that were dependent upon duration of use and could last up to >10 years after discontinuation of estrogen plus progestin therapy and estrogen-alone therapy. Extension of the WHI trials also demonstrated increased breast cancer risk associated with estrogen plus progestin therapy. Observational studies also suggest that the risk of breast cancer was greater, and became apparent earlier, with estrogen plus progestin therapy as compared to estrogen-alone therapy.

However, these studies have not found significant variation in the risk of breast cancer among different estrogen plus progestin combinations, or routes of administration.

The use of estrogen-alone and estrogen plus progestin has been reported to result in an increase in abnormal mammograms requiring further evaluation.

All women should receive yearly breast examinations by a healthcare provider and perform monthly breast self-examinations.  In addition, mammography examinations should be scheduled based on patient age, risk factors, and prior mammogram results.

 

An increased risk of endometrial cancer has been reported with the use of unopposed estrogen therapy in women with a uterus. The reported endometrial cancer risk among unopposed estrogen users is about 2 to 12 times greater than in non-users, and appears dependent on duration of treatment and on estrogen dose. Most studies show no significant increased risk associated with the use of estrogens for less than 1 year. The greatest risk appears associated with prolonged use, with increased risks of 15- to 24-fold for 5 to 10 years or more. This risk has been shown to persist for at least 8 to 15 years after estrogen therapy is discontinued.

Clinical surveillance of all women using estrogen plus progestin therapy is important. Adequate diagnostic measures, including endometrial sampling when indicated, should be undertaken to rule out malignancy in all cases of undiagnosed persistent or recurring abnormal genital bleeding. There is no evidence that the use of natural estrogens results in a different endometrial risk profile than synthetic estrogens of equivalent estrogen dose. Adding a progestin to estrogen therapy has been shown to reduce the risk of endometrial hyperplasia, which may be a precursor to endometrial cancer.

 

The WHI estrogen plus progestin substudy reported a statistically non-significant increased risk of ovarian cancer. After an average follow-up of 5.6 years, the relative risk for ovarian cancer for CE plus MPA versus placebo was 1.58 (95 percent CI, 0.77 to 3.24). The absolute risk for CE plus MPA was 4 versus 3 cases per 10,000 women-years. In some epidemiologic studies, the use of estrogen plus progestin and estrogen-only products, in particular for 5 or more years, has been associated with increased risk of ovarian cancer. However, the duration of exposure associated with increased risk is not consistent across all epidemiologic studies and some report no association.

 

In the WHIMS estrogen plus progestin ancillary study of WHI, a population of 4,532 postmenopausal women aged 65 to 79 years was randomized to daily CE (0.625 mg) plus MPA (2.5 mg) or placebo.

After an average follow-up of 4 years, 40 women in the CE plus MPA group and 21 women in the placebo group were diagnosed with probable dementia. The relative risk of probable dementia for CE plus MPA versus placebo was 2.05 (95 percent CI, 1.21 to 3.48). The absolute risk of probable dementia for CE plus MPA versus placebo was 45 versus 22 cases per 10,000 women-years. It is unknown whether these findings apply to younger postmenopausal women. (See CLINICAL STUDIESand PRECAUTIONS, Geriatric Use. )

 

Discontinue estrogen plus progestin therapy pending examination if there is sudden partial or complete loss of vision, or a sudden onset of proptosis, diplopia or migraine. If examination reveals papilledema or retinal vascular lesions, estrogen plus progestin therapy should be permanently discontinued.

 

PRECAUTIONS

1. Addition of a progestin when a woman has not had a hysterectomy
   Studies of the addition of a progestin for 10 or more days of a cycle of estrogen administration, or daily with estrogen in a continuous regimen, have reported a lowered incidence of endometrial hyperplasia than would be induced by estrogen treatment alone. Endometrial hyperplasia may be a precursor to endometrial cancer.
   There are, however, possible risks that may be associated with the use of progestins with estrogens compared to estrogen-alone regimens. These include an increased risk of breast cancer.
2. Unexpected abnormal vaginal bleeding
   In cases of unexpected abnormal vaginal bleeding, adequate diagnostic measures are indicated.
3. Elevated blood pressure
   Blood pressure should be monitored at regular intervals with estrogen plus progestin therapy.
4. Hypertriglyceridemia
   In women with pre-existing hypertriglyceridemia, estrogen plus progestin therapy may be associated with elevations of plasma triglycerides leading to pancreatitis. Consider discontinuation of treatment if pancreatitis occurs.
5. Hepatic Impairment and/or past history of cholestatic jaundice
   Estrogens plus progestins may be poorly metabolized in women with impaired liver function. For women with a history of cholestatic jaundice associated with past estrogen use or with pregnancy, caution should be exercised, and in the case of recurrence, medication should be discontinued.
6. Fluid Retention
   Progestins may cause some degree of fluid retention. Women who have conditions which might be influenced by this factor, such as cardiac or renal impairment, warrant careful observation when estrogen plus progestin are prescribed.
7. Hypocalcemia
   Estrogen plus progestin therapy should be used with caution in women with hypoparathyroidism as estrogen-induced hypocalcemia may occur.
8. Exacerbation of other conditions
   Estrogen plus progestin therapy may cause an exacerbation of asthma, diabetes mellitus, epilepsy, migraine, porphyria, systemic lupus erythematosus, and hepatic hemangiomas and should be used with caution in women with these conditions.

Physicians are advised to discuss the Patient Information leaflet with women for whom they prescribe medroxyprogesterone acetate.

There may be an increased risk of minor birth defects in children whose mothers are exposed to progestins during the first trimester of pregnancy. The possible risk to the male baby is hypospadias, a condition in which the opening of the penis is on the underside rather than the tip of the penis. This condition occurs naturally in approximately 5 to 8 per 1000 male births. The risk may be increased with exposure to medroxyprogesterone acetate. Enlargement of the clitoris and fusion of the labia may occur in female babies. However, a clear association between hypospadias, clitoral enlargement and labial fusion with use of medroxyprogesterone acetate has not been established.

Inform the patient of the importance of reporting exposure to medroxyprogesterone acetate in early pregnancy.

The following laboratory results may be altered by the use of estrogen plus progestin therapy:

1. Accelerated prothrombin time, partial thromboplastin time, and platelet aggregation time; increased platelet count; increased factors II, VII antigen, VIII antigen, VIII coagulant activity, IX, X, XII, VII-X complex, II-VII-X complex, and beta-thromboglobulin; decreased levels of anti-factor Xa and antithrombin III, decreased antithrombin III activity; increased levels of fibrinogen and fibrinogen activity; increased plasminogen antigen and activity.
2. Increased thyroid-binding globulin (TBG) levels leading to increased circulating total thyroid hormone levels as measured by protein-bound iodine (PBI), T4 levels (by column or by radioimmunoassay) or T3 levels by radioimmunoassay, T3 resin uptake is decreased, reflecting the elevated TBG. Free T4 and free T3 concentrations are unaltered. Women on thyroid replacement therapy may require higher doses of thyroid hormone.
3. Other binding proteins may be elevated in serum. for example, corticosteroid binding globulin (CBG), sex hormone binding globulin (SHBG) leading to increased circulating corticosteroid and sex steroids, respectively. Free hormone concentrations, such as testosterone and estradiol, may be decreased. Other plasma proteins may be increased (angiotensinogen/renin substrate, alpha-1-antitrypsin, ceruloplasmin).
4. Increased plasma high-density lipoprotein (HDL) and HDL2 cholesterol subfraction concentrations, reduced low-density lipoprotein (LDL) cholesterol concentration, increased triglycerides levels.
5. Impaired glucose tolerance.

Carcinogenicity: Long-term intramuscular administration of medroxyprogesterone acetate has been shown to produce mammary tumors in beagle dogs. There was no evidence of a carcinogenic effect associated with the oral administration of medroxyprogesterone acetate to rats and mice.

Long-term continuous administration of estrogen plus progestin therapy has shown an increased risk of breast cancer and ovarian cancer. (See WARNINGSand PRECAUTIONS. )

Genotoxicity: Medroxyprogesterone acetate was not mutagenic in a battery of in vitro or in vivo genetic toxicity assays.

Fertility: Medroxyprogesterone acetate at high doses is an antifertility drug and high doses would be expected to impair fertility until the cessation of treatment.

Medroxyprogesterone acetate should not be used during pregnancy. (See CONTRAINDICATIONS.)

There may be increased risks for hypospadias, clitoral enlargement and labial fusion in children whose mothers are exposed to medroxyprogesterone acetate during the first trimester of pregnancy. However, a clear association between these conditions with use of medroxyprogesterone acetate has not been established.

Medroxyprogesterone acetate should not be used during lactation. Detectable amounts of progestin have been identified in the breast milk of nursing mothers receiving progestins.

Medroxyprogesterone acetate tablets are not indicated in children. Clinical studies have not been conducted in the pediatric population.

There have not been sufficient numbers of geriatric women involved in clinical studies utilizing medroxyprogesterone acetate alone to determine whether those over 65 years of age differ from younger subjects in their response to medroxyprogesterone acetate alone.

The Women’s Health Initiative Studies

In the WHI estrogen plus progestin substudy (daily CE [0.625 mg] plus MPA [2.5 mg] versus placebo), there was a higher relative risk of nonfatal stroke and invasive breast cancer in women greater than 65 years of age. (See CLINICAL STUDIES. )

The Women’s Health Initiative Memory Study

In the WHIMS ancillary studies of postmenopausal women 65 to 79 years of age, there was an increased risk of developing probable dementia in women receiving estrogen- alone or estrogen plus progestin when compared to placebo. (See WARNINGS, Probable Dementia. )

Since both ancillary studies were conducted in women 65 to 79 years of age, it is unknown whether these findings apply to younger postmenopausal women. (See WARNINGS, Probable Dementia. )

ADVERSE REACTIONS

See BOXED WARNINGS, WARNINGS, and PRECAUTIONS.

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

The following adverse reactions have been reported in women taking medroxyprogesterone acetate tablets, without concomitant estrogens treatment:

1. Genitourinary system

Abnormal uterine bleeding (irregular, increase, decrease), change in menstrual flow, breakthrough bleeding, spotting, amenorrhea, changes in cervical erosion and cervical secretions.

2. Breasts

Breast tenderness, mastodynia or galactorrhea has been reported.

3. Cardiovascular

Thromboembolic disorders including thrombophlebitis and pulmonary embolism have been reported.

4. Gastrointestinal

Nausea, cholestatic jaundice.

5. Skin

Sensitivity reactions consisting of urticaria, pruritus, edema and generalized rash have occurred. Acne, alopecia and hirsutism have been reported.

6. Eyes

Neuro-ocular lesions, for example, retinal thrombosis, and optic neuritis.

7. Central nervous system

Mental depression, insomnia, somnolence, dizziness, headache, nervousness.

8. Miscellaneous

Hypersensitivity reactions (for example, anaphylaxis and anaphylactoid reactions, angioedema), rash (allergic) with and without pruritus, change in weight (increase or decrease), pyrexia, edema/fluid retention, fatigue, decreased glucose tolerance.

The following adverse reactions have been reported with estrogen plus progestin therapy.

1. Genitourinary system

Abnormal uterine bleeding/spotting, or flow; breakthrough bleeding; spotting; dysmenorrheal/pelvic pain; increase in size of uterine leiomyomata; vaginitis, including vaginal candidiasis; change in amount of cervical secretion; changes in cervical ectropion; ovarian cancer; endometrial hyperplasia; endometrial cancer.

2. Breasts

Tenderness, enlargement, pain, nipple discharge, galactorrhea; fibrocystic breast changes; breast cancer.

3. Cardiovascular

Deep and superficial venous thrombosis; pulmonary embolism; thrombophlebitis; myocardial infarction; stroke; increase in blood pressure.

4. Gastrointestinal

Nausea, vomiting; abdominal cramps, bloating; cholestatic jaundice; increased incidence of gallbladder disease; pancreatitis; enlargement of hepatic hemangiomas.

5. Skin

Chloasma or melasma that may persist when drug is discontinued; erythema multiforme; erythema nodosum; hemorrhagic eruption; loss of scalp hair; hirsutism; pruritus, rash.

6. Eyes

Retinal vascular thrombosis, intolerance to contact lenses.

7. Central nervous system

Headache; migraine; dizziness; mental depression; chorea; nervousness; mood disturbances; irritability; exacerbation of epilepsy, dementia.

8. Miscellaneous

Increase or decrease in weight; reduced carbohydrate tolerance; aggravation of porphyria; edema; arthalgias; leg cramps; changes in libido; urticaria, angioedema, anaphylactoid/anaphylactic reactions; hypocalcemia; exacerbation of asthma; increased triglycerides.

To report SUSPECTED ADVERSE REACTIONS, contact Teva at 1-888-838-2872 or FDA at 1-800-FDA-1088 or http://www.fda.gov/medwatch.

 

OVERDOSAGE

Overdosage of estrogen plus progestin therapy may cause nausea and vomiting, breast tenderness, dizziness, abdominal pain, drowsiness/fatigue and withdrawal bleeding may occur in women. Treatment of overdose consists of discontinuation of CE plus MPA together with institution of appropriate symptomatic care.

 

DOSAGE & ADMINISTRATION

Medroxyprogesterone acetate tablets may be given in dosages of 5 or 10 mg daily for 5 to 10 days. A dose for inducing an optimum secretory transformation of an endometrium that has been adequately primed with either endogenous or exogenous estrogen is 10 mg of medroxyprogesterone acetate daily for 10 days. In cases of secondary amenorrhea, therapy may be started at any time. Progestin withdrawal bleeding usually occurs within three to seven days after discontinuing medroxyprogesterone acetate therapy.

 

Beginning on the calculated 16th or 21st day of the menstrual cycle, 5 or 10 mg of medroxyprogesterone acetate may be given daily for 5 to 10 days. To produce an optimum secretory transformation of an endometrium that has been adequately primed with either endogenous or exogenous estrogen, 10 mg of medroxyprogesterone acetate daily for 10 days beginning on the 16th day of the cycle is suggested. Progestin withdrawal bleeding usually occurs within three to seven days after discontinuing therapy with medroxyprogesterone acetate. Patients with a past history of recurrent episodes of abnormal uterine bleeding may benefit from planned menstrual cycling with medroxyprogesterone acetate.

 

When estrogen is prescribed for a postmenopausal woman with a uterus, a progestin should also be initiated to reduce the risk of endometrial cancer. A woman without a uterus does not need progestin. Use of estrogen, alone or in combination with a progestin, should be with the lowest effective dose and for the shortest duration consistent with treatment goals and risks for the individual woman. Patients should be re-evaluated periodically as clinically appropriate (for example, 3 to 6 month intervals) to determine if treatment is still necessary (see  WARNINGS). For women who have a uterus, adequate diagnostic measures, such as endometrial sampling, when indicated, should be undertaken to rule out malignancy in cases of undiagnosed persistent or recurring abnormal vaginal bleeding.

Medroxyprogesterone acetate tablets may be given in dosages of 5 or 10 mg daily for 12 to 14 consecutive days per month, in postmenopausal women receiving daily 0.625 mg conjugated estrogens, either beginning on the 1st day of the cycle or the 16th day of the cycle.

Patients should be started at the lowest dose.

The lowest effective dose of medroxyprogesterone acetate has not been determined.

 

HOW SUPPLIED

Medroxyprogesterone acetate tablets, USP are available in the following strengths and package sizes:

2.5 mg tablets (White, round, scored, biconvex tablet. Debossed with 555/872 on the scored side and stylized b on the other side)
NDC: 70518-4666-00

NDC: 70518-4666-01

OUTER PACKAGING: 50 in 1 BOX

PACKAGING: 1 in 1 POUCH

Dispense in a tight, light-resistant container as defined in the USP, with a child-resistant closure (as required).

Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature].

Keep this and all medications out of the reach of children.

Repackaged and Distributed by:

RemedyRepack, Inc.

625 Kolter Dr, Suite #4

Indiana, PA 15701

724-465-8762

SPL PATIENT PACKAGE INSERT

MedroxyPROGESTERone Acetate (med rox″ ee proe jes′ ter one as′ etate) Tablets

Read this Patient Information before you start taking medroxyprogesterone acetate tablets and read what you get each time you refill your medroxyprogesterone acetate tablets prescription. There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or your treatment.

What is the most important information I should know about medroxyprogesterone acetate tablets (a progestin hormone)?

• Do not use estrogens with progestins to prevent heart disease, heart attacks, strokes, or dementia (decline in brain function).
• Using estrogens with progestins may increase your chance of getting heart attacks, strokes, breast cancer, and blood clots.
• Using estrogens with progestins may increase your chance of getting dementia, based on a study of women age 65 years or older.
• You and your healthcare provider should talk regularly about whether you still need treatment with medroxyprogesterone acetate.

What are medroxyprogesterone acetate tablets?

Medroxyprogesterone acetate tablet is a medicine that contains medroxyprogesterone acetate, a progestin hormone.

What are medroxyprogesterone acetate tablets used for?

Medroxyprogesterone acetate tablets are used to:

• Treat menstrual periods that have stopped or to treat abnormal uterine bleeding. Women with a uterus who are not pregnant, who stop having regular menstrual periods or who begin to have irregular menstrual periods may have a drop in their progesterone level. Talk with your healthcare provider about whether medroxyprogesterone acetate tablets are right for you.
• Reduce your chances of getting cancer of the uterus (womb). In postmenopausal women with a uterus who use estrogens, taking progestin in combination with estrogen will reduce your chance of getting cancer of the uterus (womb).

Who should not take medroxyprogesterone acetate tablets?

Do not start taking medroxyprogesterone acetate tablets if you:

• have unusual vaginal bleeding
• currently have or have had certain cancers
  
  Estrogen plus progestin may increase your chance of getting certain types of cancers, including cancer of the breast. If you have or have had cancer, talk with your healthcare provider about whether you should use medroxyprogesterone acetate tablets.
• had a stroke or heart attack
• currently have or have had blood clots
• currently have or have had liver problems
• are allergic to medroxyprogesterone acetate tablets or any of its ingredients
  
  See the list of ingredients in medroxyprogesterone acetate tablets at the end of this leaflet.
• think you may be pregnant
  
  Medroxyprogesterone acetate tablets are not for pregnant women. If you think you may be pregnant, you should have a pregnancy test and know the results. Do not use medroxyprogesterone acetate tablets if the test is positive and talk to your healthcare provider. There may be an increased risk of minor birth defects in children whose mothers take medroxyprogesterone acetate tablets during the first 4 months of pregnancy.

  Medroxyprogesterone acetate tablets should not be used as a test for pregnancy.

What should I tell my healthcare provider before taking medroxyprogesterone acetate tablets? Before you take medroxyprogesterone acetate tablets, tell your healthcare provider if you:

• have any other medical problems
  Your healthcare provider may need to check you more carefully if you have certain conditions such as asthma (wheezing), epilepsy (seizures), diabetes, migraine, endometriosis (severe pelvic pain), lupus, or problems with your heart, liver, thyroid, kidneys, or have high calcium in your blood.
• are going to have surgery or will be on bed rest
  Your healthcare provider will let you know if you need to stop taking medroxyprogesterone acetate tablets.
• are breast feeding
  The hormone in medroxyprogesterone acetate can pass into your breast milk.

Tell your healthcare provider about all the medicines you take including prescription and nonprescription medicines, vitamins, and herbal supplements. Some medicines may affect how medroxyprogesterone acetate tablets work. Medroxyprogesterone acetate tablets may also affect how other medicines work.

How should I take medroxyprogesterone acetate tablets?

Start at the lowest dose and talk to your healthcare provider about how well that dose is working for you. The lowest effective dose of medroxyprogesterone acetate tablets has not been determined. You and your healthcare provider should talk regularly (every 3 to 6 months) about the dose you are taking and whether you still need treatment with medroxyprogesterone acetate tablets.

1. Absence of menstrual period: Medroxyprogesterone acetate tablets may be given in doses ranging from 5 to 10 mg daily for 5 to 10 days.
2. Abnormal Uterine Bleeding: Medroxyprogesterone acetate tablets may be given in doses ranging from 5 to 10 mg daily for 5 to 10 days.
3. Overgrowth of the lining of the uterus: When used in combination with oral conjugated estrogens in postmenopausal women with a uterus, medroxyprogesterone acetate tablets may be given in doses ranging from 5 or 10 mg daily for 12 to 14 straight days per month.

What are the possible side effects of medroxyprogesterone acetate tablets?

The following side effects have been reported with the use of medroxyprogesterone acetate tablets alone:

• breast tenderness
• breast milk secretion
• breakthrough bleeding
• spotting (minor vaginal bleeding)
• irregular periods
• amenorrhea (absence of menstrual periods)
• vaginal secretions
• headaches
• nervousness
• dizziness
• depression
• insomnia, sleepiness, fatigue
• premenstrual syndrome-like symptoms
• thrombophlebitis (inflamed veins)
• blood clot
• itching, hives, skin rash
• acne
• hair loss, hair growth
• abdominal discomfort
• nausea
• bloating
• fever
• increase in weight
• swelling
• changes in vision and sensitivity to contact lenses

Call your healthcare provider right away if you get hives, problems breathing, swelling of the face, mouth, tongue or neck.

The following side effects have been reported with the use of medroxyprogesterone acetate with an estrogen.

Side effects are grouped by how serious they are and how often they happen when you are treated.

Serious, but less common side effects include:

• heart attack
• stroke
• blood clots
• dementia
• breast cancer
• cancer of the uterus
• cancer of the ovary
• high blood pressure
• high blood sugar
• gallbladder disease
• liver problems
• changes in your thyroid hormone levels
• enlargements of benign tumors (“fibroids”)

Call your healthcare provider right away if you get any of the following warning signs or any other unusual symptoms that concern you:

• new breast lumps
• unusual vaginal bleeding
• changes in vision and speech
• sudden new severe headaches
• severe pains in your chest or legs with or without shortness of breath, weakness and fatigue
• memory loss or confusion

Less serious, but common side effects include:

• headache
• breast pain
• irregular vaginal bleeding or spotting
• stomach or abdominal cramps, bloating
• nausea and vomiting
• hair loss
• fluid retention
• vaginal yeast infection

These are not all the possible side effects of medroxyprogesterone acetate with or without estrogen. For more information, ask your healthcare provider or pharmacist for advice about side effects. Tell your healthcare provider if you have side effect that bothers you or does not go away. You may report side effects to Teva at 1-888-838-2872 or FDA at 1-800-FDA-1088.

What can I do to lower my chances of a serious side effect with medroxyprogesterone acetate tablets?

• Talk with your healthcare provider regularly about whether you should continue taking medroxyprogesterone acetate tablets. The addition of a progestin is generally recommended for women with a uterus to reduce the chance of getting cancer of the uterus (womb).
• See your healthcare provider right away if you get vaginal bleeding while taking medroxyprogesterone acetate tablets.
• Have a pelvic exam, breast exam and mammogram (breast X-ray) every year unless your healthcare provider tells you something else. If members of your family have had breast cancer or if you have ever had breast lumps or an abnormal mammogram, you may need to have breast exams more often.
• If you have high blood pressure, high cholesterol (fat in the blood), diabetes, are overweight, or if you use tobacco, you may have a higher chance of getting heart disease. Ask your healthcare provider for ways to lower your chance of getting heart disease.

General information about safe and effective use of medroxyprogesterone acetate tablets

• Medicines are sometimes prescribed for conditions that are not mentioned in patient information leaflets.
• Do not take medroxyprogesterone acetate tablets for conditions for which it was not prescribed.
• Do not give medroxyprogesterone acetate tablets to other people, even if they have the same symptoms you have. It may harm them.

Keep medroxyprogesterone acetate tablets out of the reach of children.

This leaflet provides a summary of the most important information about medroxyprogesterone acetate tablets. If you would like more information, talk with your health care provider or pharmacist. You can ask for information about medroxyprogesterone acetate tablets that is written for health professionals. You can get more information by calling the toll-free number, 1-888-838-2872.

What are the ingredients in medroxyprogesterone acetate tablets?

Each medroxyprogesterone acetate tablet for oral administration contains 2.5 mg, 5 mg or 10 mg of medroxyprogesterone acetate.

Inactive ingredients: crospovidone, lactose monohydrate, magnesium stearate, methylcellulose, pregelatinized corn starch, and sodium lauryl sulfate.

Manufactured For:

Teva Pharmaceuticals

Parsippany, NJ 07054

Rev. C 3/2024

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL SECTION

p>DRUG: Medroxyprogesterone Acetate
GENERIC: Medroxyprogesterone Acetate
DOSAGE: TABLET
ADMINISTRATION: ORAL
NDC: 70518-4666-00

NDC: 70518-4666-01

OUTER PACKAGING: 50 in 1 BOX

PACKAGING: 1 in 1 POUCH
STRENGTH: 2.5 mg
COLOR: white
SHAPE: ROUND
SCORE: Two even pieces
SIZE: 6 mm
IMPRINT: 555;872;b

INGREDIENTS AND APPEARANCE

MEDROXYPROGESTERONE ACETATE 
medroxyprogesterone acetate tablet

Product Information
Product Type	HUMAN PRESCRIPTION DRUG	Item Code (Source)	NDC: 70518-4666(NDC:0555-0872)
Route of Administration	ORAL

Active Ingredient/Active Moiety
Ingredient Name	Basis of Strength	Strength
MEDROXYPROGESTERONE ACETATE (UNII: C2QI4IOI2G) (MEDROXYPROGESTERONE - UNII:HSU1C9YRES)	MEDROXYPROGESTERONE ACETATE	2.5 mg

Inactive Ingredients
Ingredient Name	Strength
CROSPOVIDONE (UNII: 68401960MK)
LACTOSE MONOHYDRATE (UNII: EWQ57Q8I5X)
MAGNESIUM STEARATE (UNII: 70097M6I30)
STARCH, CORN (UNII: O8232NY3SJ)
SODIUM LAURYL SULFATE (UNII: 368GB5141J)

Product Characteristics
Color	white	Score	2 pieces
Shape	ROUND (TABLET)	Size	6mm
Flavor		Imprint Code	555;872;b
Contains

Packaging
#	Item Code	Package Description	Marketing Start Date	Marketing End Date
1	NDC: 70518-4666-0	50 in 1 BOX	05/27/2026
1	NDC: 70518-4666-1	1 in 1 POUCH; Type 0: Not a Combination Product

Marketing Information
Marketing Category	Application Number or Monograph Citation	Marketing Start Date	Marketing End Date
ANDA	ANDA040159	05/27/2026

Labeler - REMEDYREPACK INC. (829572556)