meclizine (Rx, OTC)

Brand and Other Names:Antivert, Bonine, more...Meni D, meclozine, Dramamine Less Drowsy Formula, VertiCalm
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Dosing & Uses

AdultPediatric

Dosage Forms & Strengths

tablet

  • 12.5mg
  • 25mg
  • 32mg

tablet, chewable

  • 25mg

Motion Sickness

12.5-50 mg PO given 1 hour before travel and then every 24 hr PRN

Vertigo

25-100 mg/day PO in single daily dose or divided q6-12hr

Dosage Forms & Strengths

tablet

  • 12.5mg
  • 25mg
  • 32mg
  • 50mg

tablet, chewable

  • 25mg

Motion Sickness

<12 years: Safety and efficacy not established

>12 years: 12.5-50 mg PO given 1 hour before travel and then daily PRN

Vertigo

<12 years: Safety and efficacy not established

>12 years: 25-100 mg/day PO in single daily dose or divided q6-12hr

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Interactions

Interaction Checker

and meclizine

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    Interactions Found

    Contraindicated

      Serious - Use Alternative

        Significant - Monitor Closely

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            Contraindicated (0)

              Serious - Use Alternative (3)

              • metoclopramide intranasal

                meclizine, metoclopramide intranasal. Either increases effects of the other by Other (see comment). Avoid or Use Alternate Drug. Comment: Avoid use of metoclopramide intranasal or interacting drug, depending on importance of drug to patient.

              • pramlintide

                pramlintide, meclizine. Either increases effects of the other by pharmacodynamic synergism. Contraindicated. Synergistic inhibition of GI motility.

              • secretin

                meclizine decreases effects of secretin by pharmacodynamic antagonism. Avoid or Use Alternate Drug. Concomitant use of anticholinergic drugs may cause a hyporesponse to stimulation testing with secretin. Discontinue anticholinergic drugs at least 5 half-lives before administering secretin.

              Monitor Closely (101)

              • abobotulinumtoxinA

                abobotulinumtoxinA increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Use of anticholinergic drugs after administration of botulinum toxin-containing products may potentiate systemic anticholinergic effects.

              • aclidinium

                meclizine and aclidinium both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • amantadine

                meclizine, amantadine. Mechanism: pharmacodynamic synergism. Use Caution/Monitor. Potential for increased anticholinergic adverse effects.

              • amifampridine

                meclizine increases toxicity of amifampridine by Other (see comment). Modify Therapy/Monitor Closely. Comment: Amifampridine can cause seizures. Coadministration with drugs that lower seizure threshold may increase this risk.

              • amitriptyline

                meclizine and amitriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • amoxapine

                meclizine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • anticholinergic/sedative combos

                anticholinergic/sedative combos and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • aripiprazole

                meclizine decreases levels of aripiprazole by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of aripiprazole by pharmacodynamic antagonism. Use Caution/Monitor.

                aripiprazole increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • atracurium

                atracurium and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • atropine

                atropine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • atropine IV/IM

                atropine IV/IM and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • belladonna alkaloids

                belladonna alkaloids and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • belladonna and opium

                meclizine and belladonna and opium both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • benperidol

                meclizine decreases levels of benperidol by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of benperidol by pharmacodynamic antagonism. Use Caution/Monitor.

                benperidol increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • benztropine

                benztropine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor. Additive anticholinergic adverse effects may be seen with concurrent use.

              • bethanechol

                bethanechol increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • brexanolone

                brexanolone, meclizine. Either increases toxicity of the other by sedation. Use Caution/Monitor.

              • carbachol

                carbachol increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • cevimeline

                cevimeline increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • chlorpromazine

                meclizine decreases levels of chlorpromazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of chlorpromazine by pharmacodynamic antagonism. Use Caution/Monitor.

                chlorpromazine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • cisatracurium

                cisatracurium and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • clobazam

                meclizine, clobazam. Other (see comment). Use Caution/Monitor. Comment: Concomitant administration can increase the potential for CNS effects (e.g., increased sedation or respiratory depression).

              • clomipramine

                meclizine and clomipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • clozapine

                meclizine decreases levels of clozapine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of clozapine by pharmacodynamic antagonism. Use Caution/Monitor.

                clozapine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • cyclizine

                cyclizine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • cyclobenzaprine

                cyclobenzaprine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • darifenacin

                darifenacin and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • desipramine

                meclizine and desipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • dicyclomine

                dicyclomine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • diphenhydramine

                diphenhydramine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • donepezil

                donepezil increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • dosulepin

                meclizine and dosulepin both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • doxepin

                meclizine and doxepin both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • droperidol

                meclizine decreases levels of droperidol by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of droperidol by pharmacodynamic antagonism. Use Caution/Monitor.

                droperidol increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • echothiophate iodide

                echothiophate iodide increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • esketamine intranasal

                esketamine intranasal, meclizine. Either increases toxicity of the other by sedation. Use Caution/Monitor.

              • fesoterodine

                fesoterodine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • flavoxate

                flavoxate and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • fluphenazine

                meclizine decreases levels of fluphenazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of fluphenazine by pharmacodynamic antagonism. Use Caution/Monitor.

                fluphenazine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • galantamine

                galantamine increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • glycopyrrolate

                glycopyrrolate and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • glycopyrrolate inhaled

                glycopyrrolate inhaled and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • haloperidol

                meclizine decreases levels of haloperidol by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of haloperidol by pharmacodynamic antagonism. Use Caution/Monitor.

                haloperidol increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • henbane

                henbane and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • homatropine

                homatropine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • huperzine A

                huperzine A increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • hyoscyamine

                hyoscyamine and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • hyoscyamine spray

                hyoscyamine spray and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • iloperidone

                meclizine decreases levels of iloperidone by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of iloperidone by pharmacodynamic antagonism. Use Caution/Monitor.

                iloperidone increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • imipramine

                meclizine and imipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • ipratropium

                ipratropium and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor. Due to the poor systemic absorption of ipratropium, interaction unlikely at regularly recommended dosages.

              • lasmiditan

                lasmiditan, meclizine. Either increases effects of the other by sedation. Use Caution/Monitor. Coadministration of lasmiditan and other CNS depressant drugs, including alcohol have not been evaluated in clinical studies. Lasmiditan may cause sedation, as well as other cognitive and/or neuropsychiatric adverse reactions.

              • lemborexant

                lemborexant, meclizine. Either increases effects of the other by sedation. Modify Therapy/Monitor Closely. Dosage adjustment may be necessary if lemborexant is coadministered with other CNS depressants because of potentially additive effects.

              • levodopa

                meclizine, levodopa. Other (see comment). Use Caution/Monitor. Comment: Anticholinergic agents may enhance the therapeutic effects of levodopa; however, anticholinergic agents can exacerbate tardive dyskinesia. In high dosage, anticholinergics may decrease the effects of levodopa by delaying its GI absorption. .

              • lofepramine

                meclizine and lofepramine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • loxapine

                meclizine decreases levels of loxapine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of loxapine by pharmacodynamic antagonism. Use Caution/Monitor.

                loxapine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • loxapine inhaled

                loxapine inhaled increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

                meclizine decreases levels of loxapine inhaled by pharmacodynamic antagonism. Use Caution/Monitor.

              • lurasidone

                lurasidone, meclizine. Either increases toxicity of the other by Other (see comment). Use Caution/Monitor. Comment: Potential for increased CNS depressant effects when used concurrently; monitor for increased adverse effects and toxicity.

              • maprotiline

                meclizine and maprotiline both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • methscopolamine

                meclizine and methscopolamine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • neostigmine

                neostigmine increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • nortriptyline

                meclizine and nortriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • olanzapine

                meclizine decreases levels of olanzapine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of olanzapine by pharmacodynamic antagonism. Use Caution/Monitor.

                olanzapine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • onabotulinumtoxinA

                onabotulinumtoxinA and meclizine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • orphenadrine

                meclizine and orphenadrine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • oxybutynin

                meclizine and oxybutynin both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • oxybutynin topical

                meclizine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • oxybutynin transdermal

                meclizine and oxybutynin transdermal both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • paliperidone

                meclizine decreases levels of paliperidone by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of paliperidone by pharmacodynamic antagonism. Use Caution/Monitor.

                paliperidone increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • pancuronium

                meclizine and pancuronium both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • perphenazine

                meclizine decreases levels of perphenazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of perphenazine by pharmacodynamic antagonism. Use Caution/Monitor.

                perphenazine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • physostigmine

                physostigmine increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • pilocarpine

                pilocarpine increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • pilocarpine ophthalmic

                pilocarpine ophthalmic increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • pimozide

                meclizine decreases levels of pimozide by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of pimozide by pharmacodynamic antagonism. Use Caution/Monitor.

                pimozide increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • pralidoxime

                meclizine and pralidoxime both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • prochlorperazine

                meclizine decreases levels of prochlorperazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of prochlorperazine by pharmacodynamic antagonism. Use Caution/Monitor.

                prochlorperazine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • promethazine

                meclizine decreases levels of promethazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of promethazine by pharmacodynamic antagonism. Use Caution/Monitor.

                promethazine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • propantheline

                meclizine and propantheline both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • protriptyline

                meclizine and protriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • pyridostigmine

                pyridostigmine increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • quetiapine

                meclizine decreases levels of quetiapine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of quetiapine by pharmacodynamic antagonism. Use Caution/Monitor.

                quetiapine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • rapacuronium

                meclizine and rapacuronium both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • risperidone

                meclizine decreases levels of risperidone by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of risperidone by pharmacodynamic antagonism. Use Caution/Monitor.

                risperidone increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • rocuronium

                meclizine and rocuronium both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • scopolamine

                meclizine and scopolamine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • solifenacin

                meclizine and solifenacin both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • stiripentol

                stiripentol, meclizine. Either increases effects of the other by sedation. Use Caution/Monitor. Concomitant use stiripentol with other CNS depressants, including alcohol, may increase the risk of sedation and somnolence.

              • succinylcholine

                succinylcholine increases and meclizine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

              • thioridazine

                meclizine decreases levels of thioridazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of thioridazine by pharmacodynamic antagonism. Use Caution/Monitor.

                thioridazine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • thiothixene

                meclizine decreases levels of thiothixene by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of thiothixene by pharmacodynamic antagonism. Use Caution/Monitor.

                thiothixene increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • tiotropium

                meclizine and tiotropium both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • tolterodine

                meclizine and tolterodine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • trazodone

                meclizine and trazodone both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • trifluoperazine

                meclizine decreases levels of trifluoperazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of trifluoperazine by pharmacodynamic antagonism. Use Caution/Monitor.

                trifluoperazine increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • trihexyphenidyl

                meclizine and trihexyphenidyl both decrease cholinergic effects/transmission. Use Caution/Monitor. Potential for additive anticholinergic effects.

              • trimipramine

                meclizine and trimipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • trospium chloride

                meclizine and trospium chloride both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • vecuronium

                meclizine and vecuronium both decrease cholinergic effects/transmission. Use Caution/Monitor.

              • ziprasidone

                meclizine decreases levels of ziprasidone by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of ziprasidone by pharmacodynamic antagonism. Use Caution/Monitor.

                ziprasidone increases effects of meclizine by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.

              • zotepine

                meclizine decreases levels of zotepine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.

                meclizine decreases levels of zotepine by pharmacodynamic antagonism. Use Caution/Monitor.

              Minor (10)

              • amikacin

                meclizine, amikacin. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Ototoxicity of aminoglycoside may be masked.

              • digoxin

                meclizine increases levels of digoxin by unspecified interaction mechanism. Minor/Significance Unknown.

              • dimenhydrinate

                dimenhydrinate increases toxicity of meclizine by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

              • donepezil

                donepezil decreases effects of meclizine by pharmacodynamic antagonism. Minor/Significance Unknown.

              • galantamine

                galantamine decreases effects of meclizine by pharmacodynamic antagonism. Minor/Significance Unknown.

              • gentamicin

                meclizine, gentamicin. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Ototoxicity of aminoglycoside may be masked.

              • neomycin PO

                meclizine, neomycin PO. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Ototoxicity of aminoglycoside may be masked.

              • paromomycin

                meclizine, paromomycin. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Ototoxicity of aminoglycoside may be masked.

              • streptomycin

                meclizine, streptomycin. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Ototoxicity of aminoglycoside may be masked.

              • tobramycin

                meclizine, tobramycin. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Ototoxicity of aminoglycoside may be masked.

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              Adverse Effects

              Frequency Not Defined

              Drowsiness

              Thickening of bronchial secretions

              Acute glaucoma attack

              Blurred vision (rare)

              Constipation

              Fatigue

              Vomiting

              Xerostomia

              Headache

              Dry mouth

              Urinary retention

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              Warnings

              Contraindications

              Hypersensitivity

              Cautions

              Use cautioin in obstructive genitourinary tract disease, asthma, pyloric or duodenal obstruction, prostatic hyperplasia, narrow angle glaucoma

              Hepatic impairment may increase meclizine systemic exposure

              Renal impairment may increase meclizine or metabolite accumulation

              May impair physical or mental abilities; use caution when operating heavy machinery or performing tasks which require mental alertness

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              Pregnancy & Lactation

              Pregnancy category: B

              Lactation: Not known if excreted in milk; use caution

              Pregnancy Categories

              A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.

              B: May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.

              C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.

              D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.

              X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.

              NA: Information not available.

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              Pharmacology

              Mechanism of Action

              Antihistamine with activity against nebulized histamine; blocks vasodepressor response to histamine, with slight blocking action against acetylcholine

              Absorption

              Onset: 30-60 min

              Duration: 12-24 hr

              Peak plasma time: 3 hr

              Distribution

              Vd: 7 L/kg

              Metabolism

              In vitro study found CYP2D6 the dominant metabolic enzyme

              Elimination

              Half-life: 5 hr

              Excretion: Urine, feces

              Pharmacogenomics

              Genetic polymorphism of CYP2D6 that results in extensive-, poor-, intermediate- and ultrarapid metabolizer phenotypes could contribute to large interindividual variability in meclizine exposure

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              Images

              BRAND FORM. UNIT PRICE PILL IMAGE
              meclizine oral
              -
              25 mg chewable tablet
              meclizine oral
              -
              25 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              meclizine oral
              -
              25 mg tablet
              meclizine oral
              -
              25 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              meclizine oral
              -
              25 mg chewable tablet
              meclizine oral
              -
              25 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              meclizine oral
              -
              25 mg tablet
              meclizine oral
              -
              25 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              meclizine oral
              -
              25 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              meclizine oral
              -
              25 mg tablet
              meclizine oral
              -
              12.5 mg tablet
              Motion Sickness Relief (meclizine) oral
              -
              25 mg chewable tablet

              Copyright © 2010 First DataBank, Inc.

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              Patient Handout

              Patient Education
              meclizine oral

              MECLIZINE - ORAL

              (MEK-li-zeen)

              COMMON BRAND NAME(S): Antivert, Vertin

              USES: Meclizine is an antihistamine that is used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness. It may also be used to reduce dizziness and loss of balance (vertigo) caused by inner ear problems.

              HOW TO USE: Follow all directions on the product package. If your doctor has prescribed this medication, take it as directed. If you have any questions, ask your doctor or pharmacist.Take this medication by mouth with or without food. If you are taking the chewable tablets, chew the tablet thoroughly before swallowing.The dosage is based on your medical condition and response to treatment. Do not increase your dose or take this medication more often than directed.To prevent motion sickness, take the first dose one hour before starting activity such as travel.Tell your doctor if your condition does not improve or if it worsens.

              SIDE EFFECTS: Drowsiness, dry mouth, and tiredness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.To relieve dry mouth, suck (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water, or use a saliva substitute.If your doctor has directed you to use this medication, remember that your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Tell your doctor right away if you have any serious side effects, including: mental/mood changes (such as restlessness, confusion), fast/irregular heartbeat, shaking (tremor), difficulty urinating.Get medical help right away if you have any very serious side effects, including: seizures.A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

              PRECAUTIONS: Before taking meclizine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: breathing problems (such as asthma, emphysema), high pressure in the eye (glaucoma), heart problems, high blood pressure, seizures, stomach/intestine problems (such as ulcers, blockage), overactive thyroid (hyperthyroidism), difficulty urinating (for example, due to enlarged prostate), liver problems, kidney problems.This drug may make you drowsy. Alcohol or marijuana (cannabis) can make you more drowsy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Avoid alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).Children may be more sensitive to the side effects of this drug. This drug can often cause excitement in young children instead of drowsiness.Older adults may be more sensitive to the side effects of this drug, especially drowsiness, confusion, or trouble urinating. Drowsiness and confusion can increase the risk of falling.During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding.

              DRUG INTERACTIONS: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.Some products that may interact with this drug include: antihistamines applied to the skin (such as diphenhydramine cream, ointment, spray).Tell your doctor or pharmacist if you are taking other products that cause drowsiness such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana (cannabis), drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), or other antihistamines (such as cetirizine, diphenhydramine).Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.This medication may interfere with certain laboratory tests (including allergy skin test), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.

              OVERDOSE: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: severe drowsiness, seizures, widened pupils. In children, mental/mood changes (such as restlessness, irritability, hallucinations) may occur before drowsiness.

              NOTES: Keep all regular medical and laboratory appointments.

              MISSED DOSE: If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.

              STORAGE: Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

              Information last revised August 2021. Copyright(c) 2021 First Databank, Inc.

              IMPORTANT: HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.

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              Formulary

              FormularyPatient Discounts

              Adding plans allows you to compare formulary status to other drugs in the same class.

              To view formulary information first create a list of plans. Your list will be saved and can be edited at any time.

              Adding plans allows you to:

              • View the formulary and any restrictions for each plan.
              • Manage and view all your plans together – even plans in different states.
              • Compare formulary status to other drugs in the same class.
              • Access your plan list on any device – mobile or desktop.

              The above information is provided for general informational and educational purposes only. Individual plans may vary and formulary information changes. Contact the applicable plan provider for the most current information.

              Tier Description
              1 This drug is available at the lowest co-pay. Most commonly, these are generic drugs.
              2 This drug is available at a middle level co-pay. Most commonly, these are "preferred" (on formulary) brand drugs.
              3 This drug is available at a higher level co-pay. Most commonly, these are "non-preferred" brand drugs.
              4 This drug is available at a higher level co-pay. Most commonly, these are "non-preferred" brand drugs or specialty prescription products.
              5 This drug is available at a higher level co-pay. Most commonly, these are "non-preferred" brand drugs or specialty prescription products.
              6 This drug is available at a higher level co-pay. Most commonly, these are "non-preferred" brand drugs or specialty prescription products.
              NC NOT COVERED – Drugs that are not covered by the plan.
              Code Definition
              PA Prior Authorization
              Drugs that require prior authorization. This restriction requires that specific clinical criteria be met prior to the approval of the prescription.
              QL Quantity Limits
              Drugs that have quantity limits associated with each prescription. This restriction typically limits the quantity of the drug that will be covered.
              ST Step Therapy
              Drugs that have step therapy associated with each prescription. This restriction typically requires that certain criteria be met prior to approval for the prescription.
              OR Other Restrictions
              Drugs that have restrictions other than prior authorization, quantity limits, and step therapy associated with each prescription.
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              Medscape prescription drug monographs are based on FDA-approved labeling information, unless otherwise noted, combined with additional data derived from primary medical literature.