METAXALONE TABLETS 800 mg

Manufacturer
Blenheim Pharmacal, Inc.
Effective date
2011-06-06
Label type
HUMAN PRESCRIPTION DRUG LABEL
Version
2
Source
full-release
Hydrated at
2026-05-31 20:12:03

Label at a glance#

ProductMetaxalone
Active ingredientMETAXALONE
Label structure12 sections

Indications and uses

Metaxalone tablets is indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomforts associated with acute, painful musculoskeletal conditions. The mode of action of this drug has not been clearly identified, but may be related to its sedative properties. Metaxalone does not directly relax tense skeletal muscles in man.

Dosage and administration

The recommended dose for adults and children over 12 years of age is one 800 mg tablet three to four times a day.

Label contents#

Full prescribing information#

DESCRIPTION

DESCRIPTION SECTION

Metaxalone tablets are available as an 800 mg oval, convex pink tablet.

Chemically, metaxalone is 5-[(3,5- dimethylphenoxy) methyl]-2-oxazolidinone. The empirical formula is C12H15NO3, which corresponds to a molecular weight of 221.25. The structural formula is:

molecular structure
molecular structure

Metaxalone is a white to almost white, odorless crystalline powder freely soluble in chloroform, soluble in methanol and in 96% ethanol, but practically insoluble in ether or water.

Each tablet contains 800 mg metaxalone and the following inactive ingredients: alginic acid, ammonium calcium alginate, B-Rose Liquid, corn starch and magnesium stearate.

CLINICAL PHARMACOLOGY

CLINICAL PHARMACOLOGY SECTION

Mechanism of Action

MECHANISM OF ACTION SECTION

The mechanism of action of metaxalone in humans has not been established, but may be due to general central nervous system depression. Metaxalone has no direct action on the contractile mechanism of striated muscle, the motor end plate, or the nerve fiber.

Pharmacokinetics

PHARMACOKINETICS SECTION

The pharmacokinetics of metaxalone have been evaluated in healthy adult volunteers after single dose administration of Metaxalone tablets under fasted and fed conditions at doses ranging from 400 mg to 800 mg.

Absorption

SPL UNCLASSIFIED SECTION

Peak plasma concentrations of metaxalone occur approximately 3 hours after a 400 mg oral dose under fasted conditions. Thereafter, metaxalone concentrations decline log-linearly with a terminal half-life of 9.0 ± 4.8 hours. Doubling the dose of metaxalone tablets from 400 mg to 800 mg results in a roughly proportional increase in metaxalone exposure as indicated by peak plasma concentrations (Cmax) and area under the curve (AUC). Dose proportionality at doses above 800 mg has not been studied. The absolute bioavailability of metaxalone is not known.

The single-dose pharmacokinetic parameters of metaxalone in two groups of healthy volunteers are shown in Table 1.

Table 1: Mean (%CV) Metaxalone Pharmacokinetic Parameters
 Dose (mg) Cmax (ng/mL) Tmax (h) AUC∞ (ng•h/mL) t½ (h) CL/F (L/h)
 4001  983 (53) 3.3 (35) 7479 (51) 9.0 (53) 68 (50)
 8002  1816 (43) 3.0 (39) 15044 (46) 8.0 (58) 66 (51)
 1Subjects received 1x400 mg tablet under fasted conditions (N=42)

2Subjects received 2x400 mg tablets under fasted conditions (N=59)

Food Effects

SPL UNCLASSIFIED SECTION

A randomized, two-way, crossover study was conducted in 42 healthy volunteers (31 males, 11 females) administered one 400 mg metaxalone tablet under fasted conditions and following a standard high-fat breakfast. Subjects ranged in age from 18 to 48 years (mean age = 23.5 ± 5.7 years). Compared to fasted conditions, the presence of a high fat meal at the time of drug administration increased Cmax by 177.5% and increased AUC (AUC0-t, AUC∞) by 123.5% and 115.4%, respectively. Time-to-peak concentration (Tmax) was also delayed (4.3 h versus 3.3 h) and terminal half-life was decreased (2.4 h versus 9.0 h) under fed conditions compared to fasted.

In a second food effect study of similar design, two 400 mg metaxalone tablets (800 mg) were administered to healthy volunteers (N=59, 37 males, 22 females), ranging in age from 18-50 years (mean age = 25.6± 8.7 years). Compared to fasted conditions, the presence of a high fat meal at the time of drug administration increased Cmax by 193.6% and increased AUC (AUC0-t, AUC∞) by 146.4% and 142.2%, respectively. Time-to-peak concentration (Tmax) was also delayed (4.9 h versus 3.0 h) and terminal half-life was decreased (4.2 h versus 8.0 h) under fed conditions compared to fasted conditions. Similar food effect results were observed in the above study when one metaxalone 800 mg tablet was administered in place of two metaxalone 400 mg tablets. The increase in metaxalone exposure coinciding with a reduction in half-life may be attributed to more complete absorption of metaxalone in the presence of a high fat meal (Figure 1).

Figure 1 - Mean (SD) Concentrations of Metaxalone following an 800 mg Dose under Fasted and Fed Conditions.
Figure 1 - Mean (SD) Concentrations of Metaxalone following an 800 mg Dose under Fasted and Fed Conditions.
Distribution, Metabolism, and Excretion

SPL UNCLASSIFIED SECTION

Although plasma protein binding and absolute bioavailability of metaxalone are not known, the apparent volume of distribution (V/F ~ 800 L) and lipophilicity (log P = 2.42) of metaxalone suggest that the drug is extensively distributed in the tissues. Metaxalone is metabolized by the liver and excreted in the urine as unidentified metabolites.  Hepatic  Cytochrome P450 enzymes play a role in the metabolism of metaxalone.  Specifically, CYP1A2, CYP2D6, CYP2E1, and CYP3A4 and, to a lesser extent, CYP2C8, CYP2C9, and CYP2C19 appear to metabolize metaxalone.

Metaxalone does not significantly inhibit major CYP enzymes such as CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1, and CYP3A4.  Metaxalone does not significantly induce major CYP enzymes such as CYP1A2, CYP2B6, and CYP3A4 in vitro.

Pharmacokinetics in Special Populations

SPL UNCLASSIFIED SECTION

Age:

SPL UNCLASSIFIED SECTION

The effects of age on the pharmacokinetics of metaxalone were determined following single administration of two 400 mg tablets (800 mg) under fasted and fed conditions. The results were analyzed separately, as well as in combination with the results from three other studies. Using the combined data, the results indicate that the pharmacokinetics of metaxalone are significantly more affected by age under fasted conditions than under fed conditions, with bioavailability under fasted conditions increasing with age.

The bioavailability of metaxalone under fasted and fed conditions in three groups of healthy volunteers of varying age is shown in Table 2.

Table 2: Mean (%CV) Pharmacokinetic Parameters Following Single Administration of Two 400 mg Metaxalone Tablets (800 mg) under Fasted and Fed Conditions
  Younger Volunteers Older Volunteers
 Age (years) 25.6 ± 8.7 39.3 ± 10.8 71.5 ± 5.0
 N 59 21 23
 Food Fasted Fed Fasted Fed Fasted Fed
 Cmax (ng/mL) 1816

(43)

 3510

(41)

 2719

(46)

 2915

(55)

 3168

(43)

 3680

(59)

 Tmax (h) 3.0

(39)

 4.9

(48)

 3.0

(40)

 8.7

(91)

 2.6

(30)

 6.5

(67)

 AUC0-t (ng·h/mL) 14531

(47)

 20683

(41)

 19836

(40)

 20482

(37)

 23797

(45)

 24340

(48)

 AUC∞ (ng·h/mL) 15045

(46)

 20833

(41)

 20490

(39)

 20815

(37)

 24194

(44)

 24704

(47)

Gender:

SPL UNCLASSIFIED SECTION

The effect of gender on the pharmacokinetics of metaxalone was assessed in an open label study, in which 48 healthy adult volunteers (24 males, 24 females) were administered two metaxalone 400 mg tablets (800 mg) under fasted conditions. The bioavailability of metaxalone was significantly higher in females compared to males as evidenced by Cmax (2115 ng/mL versus 1335 ng/mL) and AUC∞ (17884 ng·h/mL versus 10328 ng·h/mL). The mean half-life was 11.1 hours in females and 7.6 hours in males. The apparent volume of distribution of metaxalone was approximately 22% higher in males than in females, but not significantly different when adjusted for body weight. Similar findings were also seen when the previously described combined dataset was used in the analysis.

Hepatic/Renal Insufficiency:

SPL UNCLASSIFIED SECTION

The impact of hepatic and renal disease on the pharmacokinetics of metaxalone has not been determined. In the absence of such information, metasxalone tablets should be used with caution in patients with hepatic and/or renal impairment.

INDICATIONS AND USAGE

INDICATIONS & USAGE SECTION

Metaxalone tablets is indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomforts associated with acute, painful musculoskeletal conditions. The mode of action of this drug has not been clearly identified, but may be related to its sedative properties. Metaxalone does not directly relax tense skeletal muscles in man.

CONTRAINDICATIONS

CONTRAINDICATIONS SECTION

Known hypersensitivity to any components of this product.

Known tendency to drug induced, hemolytic, or other anemias.

Significantly impaired renal or hepatic function.

WARNINGS

WARNINGS SECTION

Metaxalone tablets may enhance the effects of alcohol and other CNS depressants.

PRECAUTIONS

PRECAUTIONS SECTION

Metaxalone should be administered with great care to patients with pre-existing liver damage.  Serial liver function studies should be performed in these patients.

False-positive Benedict's tests, due to an unknown reducing substance, have been noted.  A glucose-specific test will differentiate findings.

Taking metaxalone tablets with food may enhance general CNS depression; elderly patients may be especially susceptible to this CNS effect.  (See CLINICAL PHARMACOLOGY: Pharmacokinetics and PRECAUTIONS: Information for Patients sections)

Information for Patients

INFORMATION FOR PATIENTS SECTION

Metaxalone tablets may impair mental and/or physical abilities required for performance of hazardous tasks, such as operating machinery or driving a motor vehicle, especially when used with alcohol or other CNS depressants.

Drug Interactions

DRUG INTERACTIONS SECTION

The sedative effects of metaxalone tablets an dother CNS depressants (e.g., alcohol benzodiazepines, opiods, trycyclic antidepressants)  may be additive.  Therefore, caution should be exercised with patients who take more than one of these CNS depressants simultaneoulsy.

Carcinogenesis, Mutagenesis, Impairment of Fertility

CARCINOGENESIS & MUTAGENESIS & IMPAIRMENT OF FERTILITY SECTION

The carcinogenic potential of metaxalone has not been determined.

Pregnancy

PREGNANCY SECTION

Reproduction studies in rats have not revealed evidence of impaired fertility or harm to the fetus due to metaxalone. Post marketing experience has not revealed evidence of fetal injury, but such experience cannot exclude the possibility of infrequent or subtle damage to the human fetus. Safe use of metaxalone has not been established with regard to possible adverse effects upon fetal development. Therefore, metaxalone tablets should not be used in women who are or may become pregnant and particularly during early pregnancy unless in the judgement of the physician, the potential benefits outweigh the possible hazards.

NURSING MOTHERS

NURSING MOTHERS SECTION

It is not known whether this drug is secreted in human milk. As a general rule, nursing should not be undertaken while a patient is on a drug since many drugs are excreted in human milk.

Pediatric Use

PEDIATRIC USE SECTION

Safety and effectiveness in children 12 years of age and below have not been established.

ADVERSE REACTIONS

ADVERSE REACTIONS SECTION

The most frequent reactions to metaxalone include:

CNS: drowsiness, dizziness, headache, and nervousness or “irritability”;

Digestive: nausea, vomiting, gastrointestinal upset.

Other adverse reactions are:

Immune System: hypersensitivity reaction, rash with or without pruritus;

Hematologic: leukopenia; hemolytic anemia;

Hepatobiliary: jaundice.

Though rare, anaphylactoid reactions have been reported with metaxalone.

OVERDOSAGE

OVERDOSAGE SECTION

Deaths by deliberate or accidental overdose have occurred with metaxalone, particularly in combination with antidepressants, and have been reported with this class of drug in combination with alcohol.

When determining the LD50 in rats and mice, progressive sedation, hypnosis and finally respiratory failure were noted as the dosage increased. In dogs, no LD50 could be determined as the higher doses produced an emetic action in 15 to 30 minutes.

Treatment - Gastric lavage and supportive therapy. Consultation with a regional poison control center is recommended.

DOSAGE AND ADMINISTRATION

DOSAGE & ADMINISTRATION SECTION

The recommended dose for adults and children over 12 years of age is one 800 mg tablet three to four times a day.

HOW SUPPLIED

HOW SUPPLIED SECTION

Metaxalone tablets are available as an 800 mg oval, convex, pink tablet with one side debossed "M" and other side debossed "58/59".

                    Bottles of 100            NDC 64720-321-10
                    Bottles of 500            NDC 64720-321-50 

Store at Controlled Room Temperature, between 15°C and 30°C (59°F and 86°F).

Rx Only

Manufactured and Distributed by:

SPL UNCLASSIFIED SECTION

Corepharma LLC
Middlesex, NJ  08846

                        Corepharma logoCorepharma logo                                                              
MF#  704-01                                                      April 2010

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

10544-002-20 Bottle LabelBottle LabelBottle Label

DailyMed RxNorm Mappings#

RxCUI, RxNorm string, TTY table
RxCUIRxNorm stringTTYSPL version
351254metaxalone 800 MG Oral TabletPSN2
351254metaxalone 800 MG Oral TabletSCD2

DailyMed Pharmacologic Classes#

Class, Version, Type table
ClassVersionTypeEffective
METAXALONE Pharmacologic Class Indexing4Indexing - Pharmacologic Class20230206

Product Linked Resources#

Resource, Code type, Value table
ResourceCode typeValueEquivalent identifiersSource image
BarcodeEAN-130310544002201GTIN-13: 0310544002201
EAN-13: 0310544002201
GTIN-12: 310544002201
UPC-A: 310544002201
GTIN storage (14 digits): 00310544002201
10544-002-20 - 64720-321-10.jpg
Data codeCode 12800/00/000010544-002-20 - 64720-321-10.jpg

DailyMed Product Concepts#

Product concept, Relation, Version table
Product conceptRelationVersionEffective
4fe1c2a6-5488-f909-3872-734054eb745aProduct name520181231
776ba7f6-e5b0-442b-bd42-1fdfdfd821a4Product name120150615
68c52498-c9cb-48ab-a792-a4876149361eProduct name120150409

FDA-Initiated Inactive NDC Indexing#

NDC, Effective, Action table
NDCEffectiveActionDocumentIndexing SPLRelated label
10544-002-202019-10-29C16284748780-1960f7f55-d10c-8e05-e053-dbdaa90a074aMETAXALONE TABLETS 800 mg

DailyMed Package Descriptions#

Package NDC, Product, Description table
Package NDCProductDescriptionFormQuantityStrengthSPL version
10544-002-20Metaxalone20 in 1 BOTTLETABLET202

DailyMed Dashboard NDC Coverage#

NDC, Dashboard title, SPL version table
NDCDashboard titleSPL versionValidationDashboard ZIP
10544-002METAXALONE TABLET [BLENHEIM PHARMACAL, INC.]2Legacy NDC, 1 package rows20110606_f001063b-6577-4b48-899c-b05684b5e2b1.zip

DailyMed Billing Units#

Package NDC, Billing unit, Product NDC table
Package NDCBilling unitProduct NDCDailyMed indexing SPLSPL versionEffective
10544-002-20EA - Each10544-0029af773a7-3b56-4d9b-99c7-b680b6f6a4d812015-10-02
64720-321-10EA - Each64720-32174f9cb31-1f75-4fb0-8dcb-d81e89946cdb12012-07-24

DailyMed Socrata Ingredients#

Ingredient, Type, UNII table
IngredientTypeUNIISPL versionUploaded
METAXALONEACTIVE INGREDIENT1NMA9J598Y2
METAXALONEACTIVE MOIETY1NMA9J598Y2
ALGINIC ACIDINACTIVE INGREDIENT8C3Z4148WZ2
CALCIUMINACTIVE INGREDIENTSY7Q814VUP2
MAGNESIUM STEARATEINACTIVE INGREDIENT70097M6I302
STARCH, CORNINACTIVE INGREDIENTO8232NY3SJ2

Products#

Every source-derived product name is available through these pages.

DailyMed product names page 1 of 1 · 5 matching rows.

NDC Codes#

Product NDC, Package NDC table
Product NDCPackage NDC
10544-00210544-002-20
64720-321

Ingredients#

Every source-derived ingredient row is available through these pages.

DailyMed ingredient rows page 1 of 1 · 5 matching rows.

Source Document#

Source XML

Inactive ingredient matches#

Inactive Ingredient Database values describe FDA-listed use contexts. The match method and ambiguity count are shown because ingredient names, routes, and dosage forms are not always unique. Browse recovered IID releases and source provenance.

Inactive ingredient links page 1 of 2 · 71 matching rows.

DailyMed ingredient, IID ingredient, UNII table
DailyMed ingredientIID ingredientUNIIDosage form / routePotencyMaximum daily exposureMatch
ALGINIC ACIDALGINIC ACID8C3Z4148WZTABLET, FILM COATED / ORAL52.8 mgExact identifier — unii candidate
8 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, DELAYED RELEASE / ORAL144 mgExact identifier — unii candidate
39 equally ranked IID candidates
ALGINIC ACIDALGINIC ACID8C3Z4148WZCAPSULE / ORAL160 mgExact identifier — unii candidate
8 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, COATED / ORAL184 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30POWDER / ORAL25 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJPASTILLE / ORALNAExact identifier — unii candidate
22 equally ranked IID candidates
CALCIUMCALCIUMSY7Q814VUPINJECTION / INTRAMUSCULARNAExact identifier — unii candidate
2 equally ranked IID candidates
ALGINIC ACIDALGINIC ACID8C3Z4148WZINSERT, EXTENDED RELEASE / OPHTHALMIC1 mgExact identifier — unii candidate
8 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, CHEWABLE / ORAL127 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, SUGAR COATED / ORALNAExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJCAPSULE / ORAL5785 mgExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TROCHE / ORAL315 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30CAPSULE, COATED, EXTENDED RELEASE / ORALNAExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30WAFER / ORAL66 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJCAPSULE, DELAYED RELEASE / ORAL216 mgExact identifier — unii candidate
22 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJSUSPENSION, EXTENDED RELEASE / ORAL113 mgExact identifier — unii candidate
22 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJTABLET, EXTENDED RELEASE / ORAL184 mgExact identifier — unii candidate
22 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJCAPSULE, COATED, EXTENDED RELEASE / ORAL19 mgExact identifier — unii candidate
22 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJSUSPENSION/ DROPS / ORAL90 mgExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30IMPLANT / SUBCUTANEOUS0.5 mgExact identifier — unii candidate
39 equally ranked IID candidates
ALGINIC ACIDALGINIC ACID8C3Z4148WZTABLET, CHEWABLE / ORAL400 mgExact identifier — unii candidate
8 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJCAPSULE, EXTENDED RELEASE / ORAL194 mgExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30LOZENGE / TRANSMUCOSAL100 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, ORALLY DISINTEGRATING, DELAYED RELEASE / ORAL47 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30SYSTEM / INTRAVITREAL0.02 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30SUSPENSION, EXTENDED RELEASE / ORAL71 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, EXTENDED RELEASE / ORAL173 mgExact identifier — unii candidate
39 equally ranked IID candidates
CALCIUMCALCIUMSY7Q814VUPTABLET / ORAL85.04 mgExact identifier — unii candidate
2 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30SUSPENSION / ORAL64 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJTABLET, ORALLY DISINTEGRATING / ORAL100 mgExact identifier — unii candidate
22 equally ranked IID candidates
ALGINIC ACIDALGINIC ACID8C3Z4148WZTABLET, COATED / ORAL60 mgExact identifier — unii candidate
8 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30GRANULE / ORAL629 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30IMPLANT / INTRAVITREALNAExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30CAPSULE / ORAL256.4 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, FILM COATED / ORAL96 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJTABLET, DELAYED RELEASE / ORAL713 mgExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30CAPSULE, EXTENDED RELEASE / ORAL117 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJDROPS / ORALNAExact identifier — unii candidate
22 equally ranked IID candidates
ALGINIC ACIDALGINIC ACID8C3Z4148WZTABLET, EXTENDED RELEASE / ORAL89 mgExact identifier — unii candidate
8 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30GRANULE, FOR SUSPENSION / ORAL14 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJTABLET / SUBLINGUAL409 mgExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET / SUBLINGUAL17.5 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJTABLET, FILM COATED / ORAL2000 mgExact identifier — unii candidate
22 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJINSERT / VAGINAL147 mgExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30POWDER / TOPICAL104 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJCONCENTRATE / ORALNAExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET / BUCCAL17.5 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30POWDER, FOR SUSPENSION / ORAL120 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, CHEWABLE, EXTENDED RELEASE / ORAL9 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, FILM COATED, EXTENDED RELEASE / ORAL53 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30CREAM / TOPICALNAExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30PELLET / ORAL24 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJTABLET, CHEWABLE / ORAL180 mgExact identifier — unii candidate
22 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJTABLET, COATED / ORAL256 mgExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET, ORALLY DISINTEGRATING / ORAL187 mgExact identifier — unii candidate
39 equally ranked IID candidates
STARCH, CORNSTARCH, CORNO8232NY3SJTABLET / ORAL1116 mgExact identifier — unii candidate
22 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30TABLET / ORAL980 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30POWDER / RESPIRATORY (INHALATION)0.13 mgExact identifier — unii candidate
39 equally ranked IID candidates
MAGNESIUM STEARATEMAGNESIUM STEARATE70097M6I30INSERT / VAGINAL69 mgExact identifier — unii candidate
39 equally ranked IID candidates
ALGINIC ACIDALGINIC ACID8C3Z4148WZTABLET / ORAL128 mgExact identifier — unii candidate
8 equally ranked IID candidates

Orange Book application contexts#

All distinct exact application/product contexts derived from this label’s complete NDC list are paginated below.

Orange Book application contexts page 1 of 1 · 1 matching rows.

Source provenance: Browse the complete Orange Book source catalog · source snapshot 43.

Orange Book products#

Current product rows page 1 of 1 · 2 matching rows.

Application-product, Trade name, Ingredient table
Application-productTrade nameIngredientStrengthDosage form / routeTE codesRLD / RSApproval date
N013217-001SKELAXINMETAXALONE400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 1982
N013217-003SKELAXINMETAXALONE800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-30

Orange Book patents#

Current patent rows page 1 of 1 · 1 matching rows.

Application-product, Patent, Expiration table
Application-productPatentExpirationUse codeCoverage / statusSubmission date
N013217-00371225662026-02-06U-915

Observed Orange Book product history#

Observed FDA ZIP history: Each table is queried independently by exact application/product key from successfully parsed Orange Book snapshots. Capture times identify archived source observations; absence or a change between snapshots is not inferred. FDA publication files that were not recoverable as structured ZIP data are not represented as states.

Product history page 1 of 3 · 86 observed states.

Captured, Edition, Application-product table
CapturedEditionApplication-productTrade nameStrengthDosage form / routeProduct TE source textRLD / RSApproval dateSource SHA-256
2026-09-14 22:38:342026-08N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 198284e616aacf4f…
2026-09-14 22:38:342026-08N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-3084e616aacf4f…
2026-08-18 06:07:402026-07N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 1982caaa826d4ba7…
2026-08-18 06:07:402026-07N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-30caaa826d4ba7…
2026-02-19 14:30 UTC2026-02N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 1982011fe1cb6892…
2026-02-19 14:30 UTC2026-02N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-30011fe1cb6892…
2025-12-14 10:44 UTC · 2 captures of this ZIP2025-12N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 198231067a03dcf5…
2025-12-14 10:44 UTC · 2 captures of this ZIP2025-12N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-3031067a03dcf5…
2025-08-23 18:47 UTC2025-08N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 19826a471c1ec25d…
2025-08-23 18:47 UTC2025-08N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-306a471c1ec25d…
2025-03-22 03:13 UTC · 3 captures of this ZIP2025-03N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 1982fd3edfee7708…
2025-03-22 03:13 UTC · 3 captures of this ZIP2025-03N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-30fd3edfee7708…
2025-02-26 10:13 UTC · 3 captures of this ZIP2025-02N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 1982b8a1b40f171c…
2025-02-26 10:13 UTC · 3 captures of this ZIP2025-02N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-30b8a1b40f171c…
2025-01-19 17:59 UTC · 7 captures of this ZIP2025-01N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 198203ed91905a0d…
2025-01-19 17:59 UTC · 7 captures of this ZIP2025-01N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-3003ed91905a0d…
2024-12-13 21:23 UTC · 2 captures of this ZIP2024-12N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 19822680178bc6a6…
2024-12-13 21:23 UTC · 2 captures of this ZIP2024-12N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-302680178bc6a6…
2024-09-14 05:58 UTC · 2 captures of this ZIP2024-09N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 19825bbf6a4d5a75…
2024-09-14 05:58 UTC · 2 captures of this ZIP2024-09N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-305bbf6a4d5a75…
2024-11-08 22:44 UTC · 3 captures of this ZIP2024-11N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 1982d8e5a09893c0…
2024-11-08 22:44 UTC · 3 captures of this ZIP2024-11N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-30d8e5a09893c0…
2024-10-29 15:01 UTC2024-10N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 1982d06236e962d9…
2024-10-29 15:01 UTC2024-10N013217-003SKELAXIN800MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD2002-08-30d06236e962d9…
2024-08-13 05:28 UTC · 3 captures of this ZIP2024-08N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 198279d66fd596c7…
2024-08-13 05:28 UTC · 3 captures of this ZIP2024-08N013217-003SKELAXIN800MGTABLET / ORALRLD2002-08-3079d66fd596c7…
2024-07-13 05:37 UTC · 2 captures of this ZIP2024-07N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 1982301d65b070ca…
2024-07-13 05:37 UTC · 2 captures of this ZIP2024-07N013217-003SKELAXIN800MGTABLET / ORALRLD2002-08-30301d65b070ca…
2024-06-18 03:08 UTC · 5 captures of this ZIP2024-06N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 19821e350fbaab3a…
2024-06-18 03:08 UTC · 5 captures of this ZIP2024-06N013217-003SKELAXIN800MGTABLET / ORALRLD2002-08-301e350fbaab3a…
2024-05-31 18:47 UTC2024-05N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 19828072bd15b7f6…
2024-05-31 18:47 UTC2024-05N013217-003SKELAXIN800MGTABLET / ORALRLD2002-08-308072bd15b7f6…
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**TABLET / ORALRLD, Approved before 19825c6f7cd8ea54…
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06N013217-003SKELAXIN800MGTABLET / ORALABRLD, RS2002-08-305c6f7cd8ea54…
2022-04-08 23:34 UTC2022-04N013217-001SKELAXIN400MGTABLET / ORALRLD, Approved before 19825d02ea3f76ae…
2022-04-08 23:34 UTC2022-04N013217-003SKELAXIN800MGTABLET / ORALABRLD, RS2002-08-305d02ea3f76ae…
2022-04-04 05:41 UTC2022-04N013217-001SKELAXIN400MGTABLET / ORALRLD, Approved before 19824b0b4de00fa7…
2022-04-04 05:41 UTC2022-04N013217-003SKELAXIN800MGTABLET / ORALABRLD, RS2002-08-304b0b4de00fa7…
2019-12-13 00:20 UTC2019-12N013217-001SKELAXIN400MG **Federal Register determination that product was not discontinued or withdrawn for safety or efficacy reasons**TABLET / ORALRLD, Approved before 198274a2ff9319b5…
2019-12-13 00:20 UTC2019-12N013217-003SKELAXIN800MGTABLET / ORALABRLD, RS2002-08-3074a2ff9319b5…

Observed Orange Book normalized TE history#

Captured, Edition, Application-product table
CapturedEditionApplication-productTE codeOrderSource SHA-256
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06N013217-003AB15c6f7cd8ea54…
2022-04-08 23:34 UTC2022-04N013217-003AB15d02ea3f76ae…
2022-04-04 05:41 UTC2022-04N013217-003AB14b0b4de00fa7…
2019-12-13 00:20 UTC2019-12N013217-003AB174a2ff9319b5…
2022-03-09 01:35 UTC2022-03N013217-003AB1bb7c543d1eb4…
2021-12-28 21:50 UTC2021-12N013217-003AB1782e0a99824c…
2021-05-05 16:15 UTC · 3 captures of this ZIP2021-05N013217-003AB187673890dc5c…
2021-03-12 10:30 UTC2021-03N013217-003AB15aa47cf7b7d7…
2020-12-22 03:56 UTC2020-12N013217-003AB18869cabd3fbd…
2020-11-12 02:37 UTC2020-11N013217-003AB1c0c555d07b60…
2019-12-14 00:12 UTC2019-12N013217-003AB13f01610625f2…
2019-09-15 20:21 UTC2019-09N013217-003AB1b00525d2431f…
2019-07-19 19:46 UTC2019-07N013217-003AB1ea99ee380514…
2023-07-15 15:27 UTC · 2 captures of this ZIP2023-07N013217-003AB1a67488948f0b…
2023-06-13 01:57 UTC · 3 captures of this ZIP2023-06N013217-003AB13f0d92c62455…
2023-05-13 08:27 UTC2023-05N013217-003AB1053a50430f4f…
2023-01-26 05:58 UTC2023-01N013217-003AB13bdfa0b2c4d7…
2022-11-12 20:34 UTC · 5 captures of this ZIP2022-11N013217-003AB13a93d1ddd44b…
2022-10-28 04:53 UTC2022-10N013217-003AB1f41ea6bd6efb…
2022-09-29 23:25 UTC2022-09N013217-003AB1e64feba35796…
2022-07-09 03:26 UTC · 3 captures of this ZIP2022-07N013217-003AB1cb3db0bc1861…

Observed Orange Book patent history#

Patent history page 1 of 2 · 52 observed states.

Captured, Edition, Application-product table
CapturedEditionApplication-productPatentExpirationUse codeCoverage / statusSubmission dateSource SHA-256
2026-09-14 22:38:342026-08N013217-00371225662026-02-06U-91584e616aacf4f…
2026-08-18 06:07:402026-07N013217-00371225662026-02-06U-915caaa826d4ba7…
2026-02-19 14:30 UTC2026-02N013217-00371225662026-02-06U-915011fe1cb6892…
2025-12-14 10:44 UTC · 2 captures of this ZIP2025-12N013217-00371225662026-02-06U-91531067a03dcf5…
2025-08-23 18:47 UTC2025-08N013217-00371225662026-02-06U-9156a471c1ec25d…
2025-03-22 03:13 UTC · 3 captures of this ZIP2025-03N013217-00371225662026-02-06U-915fd3edfee7708…
2025-02-26 10:13 UTC · 3 captures of this ZIP2025-02N013217-00371225662026-02-06U-915b8a1b40f171c…
2025-01-19 17:59 UTC · 7 captures of this ZIP2025-01N013217-00371225662026-02-06U-91503ed91905a0d…
2024-12-13 21:23 UTC · 2 captures of this ZIP2024-12N013217-00371225662026-02-06U-9152680178bc6a6…
2024-09-14 05:58 UTC · 2 captures of this ZIP2024-09N013217-00371225662026-02-06U-9155bbf6a4d5a75…
2024-11-08 22:44 UTC · 3 captures of this ZIP2024-11N013217-00371225662026-02-06U-915d8e5a09893c0…
2024-10-29 15:01 UTC2024-10N013217-00371225662026-02-06U-915d06236e962d9…
2024-08-13 05:28 UTC · 3 captures of this ZIP2024-08N013217-00371225662026-02-06U-91579d66fd596c7…
2024-07-13 05:37 UTC · 2 captures of this ZIP2024-07N013217-00371225662026-02-06U-915301d65b070ca…
2024-06-18 03:08 UTC · 5 captures of this ZIP2024-06N013217-00371225662026-02-06U-9151e350fbaab3a…
2024-05-31 18:47 UTC2024-05N013217-00371225662026-02-06U-9158072bd15b7f6…
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06N013217-00371225662026-02-06U-9155c6f7cd8ea54…
2022-04-08 23:34 UTC2022-04N013217-00371225662026-02-06U-9155d02ea3f76ae…
2022-04-04 05:41 UTC2022-04N013217-00371225662026-02-06U-9154b0b4de00fa7…
2019-12-13 00:20 UTC2019-12N013217-00377140062021-12-03U-105074a2ff9319b5…
2019-12-13 00:20 UTC2019-12N013217-00371225662026-02-06U-91574a2ff9319b5…
2022-03-09 01:35 UTC2022-03N013217-00371225662026-02-06U-915bb7c543d1eb4…
2021-12-28 21:50 UTC2021-12N013217-00377140062021-12-03U-1050782e0a99824c…
2021-12-28 21:50 UTC2021-12N013217-00371225662026-02-06U-915782e0a99824c…
2021-05-05 16:15 UTC · 3 captures of this ZIP2021-05N013217-00377140062021-12-03U-105087673890dc5c…
2021-05-05 16:15 UTC · 3 captures of this ZIP2021-05N013217-00371225662026-02-06U-91587673890dc5c…
2021-03-12 10:30 UTC2021-03N013217-00377140062021-12-03U-10505aa47cf7b7d7…
2021-03-12 10:30 UTC2021-03N013217-00371225662026-02-06U-9155aa47cf7b7d7…
2020-12-22 03:56 UTC2020-12N013217-00377140062021-12-03U-10508869cabd3fbd…
2020-12-22 03:56 UTC2020-12N013217-00371225662026-02-06U-9158869cabd3fbd…
2020-11-12 02:37 UTC2020-11N013217-00377140062021-12-03U-1050c0c555d07b60…
2020-11-12 02:37 UTC2020-11N013217-00371225662026-02-06U-915c0c555d07b60…
2019-12-14 00:12 UTC2019-12N013217-00377140062021-12-03U-10503f01610625f2…
2019-12-14 00:12 UTC2019-12N013217-00371225662026-02-06U-9153f01610625f2…
2019-09-15 20:21 UTC2019-09N013217-00377140062021-12-03U-1050b00525d2431f…
2019-09-15 20:21 UTC2019-09N013217-00371225662026-02-06U-915b00525d2431f…
2019-07-19 19:46 UTC2019-07N013217-00377140062021-12-03U-1050ea99ee380514…
2019-07-19 19:46 UTC2019-07N013217-00371225662026-02-06U-915ea99ee380514…
2024-03-16 18:09 UTC · 4 captures of this ZIP2024-03N013217-00371225662026-02-06U-9156a51e52b5d6a…
2024-02-18 07:12 UTC2024-02N013217-00371225662026-02-06U-9151c564ffb4f44…

openFDA label cross-check#

OpenFDA label data provides additional search and identifier links. DailyMed’s Structured Product Label is the canonical label on FDA.report. Matching records are deduplicated before they are shown below.

Matched openFDA labels page 1 of 1 · 1 matching rows.

Brand, Generic, Manufacturer table
BrandGenericManufacturerSPL set IDEffective dateAvailable safety fieldsJoin
17b18994-0790-4262-8680-8167fd7f88fcf001063b-6577-4b48-899c-b05684b5e2b12011-06-06Warnings, Adverse reactionsExact identifier
spl id: 17b18994-0790-4262-8680-8167fd7f88fc
spl set id: f001063b-6577-4b48-899c-b05684b5e2b1

Reported adverse events (FAERS/openFDA)#

Adverse event summaries are temporarily unavailable. Other product information remains available.