Drug Facts
Composition & Profile
Identifiers & Packaging
16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied Meclizine Hydrochloride Tablets, USP are available containing 12.5 mg, 25 mg or 50 mg of meclizine dihydrochloride equivalent to 10.53 mg, 21.07 mg or 42.14 mg of meclizine free base, respectively. The 12.5 mg tablets are a white to off-white 7.14 mm round, biconvex, beveled edge tablets debossed with 12 on one side of tablet and C on the other side of tablet. They are available as follows: Blistercards of 30 NDC 0615-8514-39 The 25 mg tablets are a white to off-white 8.73 mm round, biconvex, beveled edge tablets debossed with 25 on one side of tablet and C on the other side of tablet. They are available as follows: Blistercards of 30 NDC 0615-8515-39 The 50 mg tablets are a white to off-white 10.32 mm round, biconvex, beveled edge tablets debossed with C above the score on one side of tablet and 50 on the other side of tablet. 16.2 Storage and Handling Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.] Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.; PACKAGE LABEL-PRINCIPAL DISPLAY PANEL Principal Display Panel
- 16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied Meclizine Hydrochloride Tablets, USP are available containing 12.5 mg, 25 mg or 50 mg of meclizine dihydrochloride equivalent to 10.53 mg, 21.07 mg or 42.14 mg of meclizine free base, respectively. The 12.5 mg tablets are a white to off-white 7.14 mm round, biconvex, beveled edge tablets debossed with 12 on one side of tablet and C on the other side of tablet. They are available as follows: Blistercards of 30 NDC 0615-8514-39 The 25 mg tablets are a white to off-white 8.73 mm round, biconvex, beveled edge tablets debossed with 25 on one side of tablet and C on the other side of tablet. They are available as follows: Blistercards of 30 NDC 0615-8515-39 The 50 mg tablets are a white to off-white 10.32 mm round, biconvex, beveled edge tablets debossed with C above the score on one side of tablet and 50 on the other side of tablet. 16.2 Storage and Handling Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.] Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.
- PACKAGE LABEL-PRINCIPAL DISPLAY PANEL Principal Display Panel
Overview
Meclizine hydrochloride, USP a histamine (H1) receptor antagonist, is a white to slight yellowish crystalline powder. It has the following structural formula: Chemically, meclizine hydrochloride is 1-( p -Chloro-α-phenylbenzyl)-4-( m -methylbenzyl) piperazine dihydrochloride monohydrate. Tablets: Inactive ingredients for the tablets are: anhydrous lactose, colloidal silicon dioxide, crospovidone, magnesium stearate and microcrystalline cellulose. Each meclizine hydrochloride 12.5 mg tablet contains 12.5 mg of meclizine dihydrochloride equivalent to 10.53 mg of meclizine free base. Each meclizine hydrochloride 25 mg tablet contains 25 mg of meclizine dihydrochloride equivalent to 21.07 mg of meclizine free base. Each meclizine hydrochloride 50 mg tablet contains 50 mg of meclizine dihydrochloride equivalent to 42.14 mg of meclizine free base. Chemical Structure
Indications & Usage
Meclizine hydrochloride tablets are indicated for the treatment of vertigo associated with diseases affecting the vestibular system in adults. Meclizine hydrochloride tablets are indicated for the treatment of vertigo associated with diseases affecting the vestibular system in adults ( 1 ).
Dosage & Administration
Recommended dosage: 25 mg to 100 mg daily, in divided doses ( 2.1 ). Tablets: Swallow whole ( 2.2 ). 2.1 Recommended Dosage The recommended dosage is 25 mg to 100 mg daily administered orally, in divided doses, depending upon clinical response. 2.2 Administration Instructions Tablets: Meclizine hydrochloride tablets must be swallowed whole.
Warnings & Precautions
May cause drowsiness: Use caution when driving a car or operating dangerous machinery ( 5.1 ). Potential anticholinergic action: this drug should be prescribed with care to patients with a history of asthma, glaucoma, or enlargement of the prostate gland ( 5.2 ). 5.1 Drowsiness Since drowsiness may occur with use of meclizine hydrochloride tablets, patients should be warned of this possibility and cautioned against driving a car or operating dangerous machinery. Patients should avoid alcoholic beverages while taking meclizine hydrochloride tablets [see Drug Interactions (7.1) ] . 5.2 Concurrent Medical Conditions Because of its potential anticholinergic action, meclizine hydrochloride tablets should be used with caution in patients with asthma, glaucoma, or enlargement of the prostate gland.
Contraindications
Meclizine hydrochloride tablets are contraindicated in patients with a hypersensitivity to meclizine or any of the inactive ingredients [see Adverse Reactions (6) and Description (11) ]. Meclizine hydrochloride tablets are contraindicated in patients with hypersensitivity to meclizine or any of the inactive ingredients ( 4 ).
Adverse Reactions
The following adverse reactions associated with the use of meclizine hydrochloride were identified in clinical studies or postmarketing reports. Because some of these reactions were reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Anaphylactic reaction, drowsiness, dry mouth, headache, fatigue, and vomiting. On rare occasions blurred vision has been reported. Common adverse reactions are anaphylactic reaction, drowsiness, dry mouth, headache, fatigue, and vomiting. On rare occasions blurred vision has been reported ( 6 ). To report SUSPECTED ADVERSE REACTIONS, contact Aurobindo Pharma USA, Inc. at 1-866-850-2876 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Drug Interactions
Coadministration of meclizine hydrochloride tablets with other CNS depressants, including alcohol, may result in increased CNS depression ( 7.1 ). CYP2D6 inhibitors: As meclizine is metabolized by CYP2D6, there is a potential for drug-drug interactions between meclizine hydrochloride tablets and CYP2D6 inhibitors ( 7.2 ). 7.1 CNS Depressants There may be increased CNS depression when meclizine hydrochloride tablets are administered concurrently with other CNS depressants, including alcohol [see Warnings and Precautions (5.1) ] . 7.2 CYP2D6 Inhibitors Based on in-vitro evaluation, meclizine is metabolized by CYP2D6. Therefore, there is a possibility for a drug interaction between meclizine hydrochloride tablets and CYP2D6 inhibitors. Therefore, monitor for adverse reactions and clinical effect accordingly.
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