MECLIZINE HYDROCHLORIDE- meclizine hydrocloride tablet

MECLIZINE HYDROCHLORIDE by

Drug Labeling and Warnings

MECLIZINE HYDROCHLORIDE by is a Prescription medication manufactured, distributed, or labeled by RPK Pharmaceuticals, Inc.. Drug facts, warnings, and ingredients follow.

Drug Details [pdf]

DESCRIPTION

Chemically, Meclizine HCl is 1-(p-chloro-α-phenylbenzyl)-4-(m-methylbenzyl) piperazine dihydrochloride monohydrate.

     C25H27ClN2 2HClH2O                                        Molecular Weight 481.88

Meclizine hydrochloride tablets, USP are available in two different strengths: 12.5 mg and 25 mg. In addition each tablet contains the following inactive ingredients: Colloidal Silicon Dioxide, Croscarmellose Sodium, Lactose Monohydrate, Magnesium Stearate, Microcrystalline Cellulose. Also, Meclizine hydrochloride tablets USP, 12.5 mg contains FD&C Blue #1 Aluminum Lake (11-13%) and Meclizine hydrochloride tablets USP, 25 mg contains D&C Yellow #10 Aluminum Lake (15-20%).

CLINICAL PHARMACOLOGY

Meclizine hydrochloride is an antihistamine that shows marked protective activity against nebulized histamine and lethal doses of intravenously injected histamine in guinea pigs. It has a marked effect in blocking the vasodepressor response to histamine, but only a slight blocking action against acetylcholine. Its activity is relatively weak in inhibiting the spasmogenic action of histamine on isolated guinea pig ileum.

Pharmacokinetics
The available pharmacokinetic information for meclizine following oral administration has been summarized from published literature.

Absorption
Meclizine is absorbed after oral administration with maximum plasma concentrations reaching at a median Tmax value of 3 hours post-dose (range: 1.5 to 6 hours) for the tablet dosage form.

Distribution
Drug distribution characteristics for meclizine in humans are unknown.

Metabolism
The metabolic fate of meclizine in humans is unknown. In an in vitro metabolic study using human hepatic microsome and recombinant CYP enzyme, CYP2D6 was found to be the dominant enzyme for metabolism of meclizine.

The genetic polymorphism of CYP2D6 that results in extensive-, poor-, intermediate- and ultra-rapid metabolizer phenotypes could contribute to large inter-individual variability in meclizine exposure.

Elimination
Meclizine has a plasma elimination half-life of about 5-6 hours in humans.

INDICATIONS AND USAGE

Meclizine hydrochloride tablets are indicated for the treatment of vertigo associated with diseases affecting the vestibular system.

CONTRAINDICATIONS

Meclizine hydrochloride tablets are contraindicated in individuals who have shown a previous hypersensitivity to it.

WARNINGS

Since drowsiness may, on occasion, occur with use of this drug, patients should be warned of this possibility and cautioned against driving a car or operating dangerous machinery.

Patients should avoid alcoholic beverages while taking this drug.

Due to its potential anticholinergic action, this drug should be used with caution in patients with asthma, glaucoma, or enlargement of the prostate gland.

PRECAUTIONS

Pediatric Use
Clinical studies establishing safety and effectiveness in children have not been done; therefore, usage is not recommended in children under 12 years of age.

Pregnancy
Pregnancy Category B.
Reproduction studies in rats have shown cleft palates at 25-50 times the human dose. Epidemiological studies in pregnant women, however, do not indicate that meclizine increases the risk of abnormalities when administered during pregnancy. Despite the animal findings, it would appear that the possibility of fetal harm is remote. Nevertheless, meclizine, or any other medication, should be used during pregnancy only if clearly necessary.

Nursing Mothers
It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when meclizine is administered to a nursing woman.

Hepatic Impairment
The effect of hepatic impairment on the pharmacokinetics of meclizine has not been evaluated. As meclizine undergoes metabolism, hepatic impairment may result in increased systemic exposure of the drug. Treatment with meclizine should be administered with caution in patients with hepatic impairment.

Renal Impairment
The effect of renal impairment on the pharmacokinetics of meclizine has not been evaluated. Due to a potential for drug/metabolite accumulation, meclizine should be administered with caution in patients with renal impairment and in the elderly as renal function generally declines with age.

Drug Interactions
There may be increased CNS depression when meclizine is administered concurrently with other CNS depressants, including alcohol, tranquilizers, and sedatives. (see WARNINGS).

Based on in-vitro evaluation, meclizine is metabolized by CYP2D6. Therefore there is a possibility for a drug interaction between meclizine and CYP2D6 inhibitors.

ADVERSE REACTIONS

Anaphylactoid reaction, drowsiness, dry mouth, headache, fatigue, vomiting and, on rare occasions, blurred vision have been reported.

To report SUSPECTED ADVERSE REACTIONS, contact Jubilant Cadista Pharmaceuticals Inc. at 1-800-313-4623 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

DOSAGE AND ADMINISTRATION

For the treatment of vertigo associated with diseases affecting the vestibular system, the recommended dose is 25 to 100 mg daily, in divided dosage, depending upon clinical response.

HOW SUPPLIED

Product: 53002-3510

NDC: 53002-3510-1 10 TABLET in a BOTTLE

NDC: 53002-3510-2 20 TABLET in a BOTTLE

NDC: 53002-3510-3 30 TABLET in a BOTTLE

Meclizine HCl 25mg Tablets, USP

INGREDIENTS AND APPEARANCE

MECLIZINE HYDROCHLORIDE 
meclizine hydrocloride tablet

Product Information
Product Type	HUMAN PRESCRIPTION DRUG	Item Code (Source)	NDC: 53002-3510(NDC:59746-121)
Route of Administration	ORAL

Active Ingredient/Active Moiety
Ingredient Name	Basis of Strength	Strength
MECLIZINE HYDROCHLORIDE (UNII: HDP7W44CIO) (MECLIZINE - UNII:3L5TQ84570)	MECLIZINE HYDROCHLORIDE	25 mg

Inactive Ingredients
Ingredient Name	Strength
Silicon Dioxide (UNII: ETJ7Z6XBU4)
Croscarmellose Sodium (UNII: M28OL1HH48)
Lactose Monohydrate (UNII: EWQ57Q8I5X)
Magnesium Stearate (UNII: 70097M6I30)
MICROCRYSTALLINE CELLULOSE (UNII: OP1R32D61U)
D&c Yellow No. 10 (UNII: 35SW5USQ3G)
Aluminum Oxide (UNII: LMI26O6933)

Product Characteristics
Color	YELLOW	Score	2 pieces
Shape	OVAL	Size	13mm
Flavor		Imprint Code	TL121
Contains

Packaging
#	Item Code	Package Description	Marketing Start Date	Marketing End Date
1	NDC: 53002-3510-1	10 in 1 BOTTLE; Type 0: Not a Combination Product	10/01/2018
2	NDC: 53002-3510-2	20 in 1 BOTTLE; Type 0: Not a Combination Product	10/01/2018
3	NDC: 53002-3510-3	30 in 1 BOTTLE; Type 0: Not a Combination Product	10/01/2018

Marketing Information
Marketing Category	Application Number or Monograph Citation	Marketing Start Date	Marketing End Date
ANDA	ANDA040659	06/04/2010

Labeler - RPK Pharmaceuticals, Inc. (147096275)

Establishment
Name	Address	ID/FEI	Business Operations
RPK Pharmaceuticals, Inc.		147096275	RELABEL(53002-3510) , REPACK(53002-3510)