Pronunciation: MEK-li-zeen
Mechanism of action: Meclizine ballicule
Visual mnemonic: Meclizine mascot
“McLizard is Anti-vertigo”
What it isCentrally acting H1 antihistamine; vertigo and motion sickness.
Why this oneIt works on vestibular nausea, where ondansetron does not.
What limits itSedation and fall risk, so poor in the elderly. It suppresses vestibular compensation, so it should not be continued for weeks.
Molecular structure: Meclizine
FDA-approved for
- vertigo/motion sickness (~1957)
FDA label
Read the full label on DailyMed ↗
| FDA dosing | Population | Start | Target | Max |
| Motion sickness prevention | Adults & children ≥12 yr | 1–2 tablets QD | 1–2 tablets QD | 2 tablets QD |
Renal Undefined
Hepatic Undefined
Instructions
- Take first dose ½ to 1 hour before starting activity/travel.
- Do not take more than directed.
Available strengths
- tab 12.5, 25, 50 mg
- chew tab 25 mg
- ODT 25 mg
- powder 50 mg
Pregnancy Undefined
Lactation Undefined
Cost
Meclizine (ANTIVERT)
What pharmacies pay · NADAC 9/30/26
| Strength | | #/mo | generic $/mo | CostPlus |
|---|
| 12.5 mg | tab | 30 qd | $1.33 | offered |
| 25 mg | tab | 30 qd | $2.27 | offered |
| 50 mg | tab | 30 qd | $74.53 | not offered |
| 25 mg | chew tab | 30 qd | $1 | not offered |
Generic entry1982
Principal riskSedation and fall risk
Classes and tags
Clinical profile
Therapeutic safety burden2 / 4
Overdose danger2 / 4
Weight-gain liability0 / 4
Sedation liability3 / 4
QT / Torsades0 / 4
Direct muscarinic antagonism0 / 4
Embryofetal risk1 / 4
Legacy pregnancy categoryC
Defining liabilitySedation, QT prolongation, extrapyramidal symptoms or anticholinergic toxicity vary by receptor target.
Open Meclizine in the interactive console ↗
Memory aids: interaction avatars
Box: minimal PK interactions
Open Meclizine in the interactive console ↗