Meclizine (Antivert, Bonine) 12.5 mg and 25 mg Tablets: OTC and Prescription Antihistamine for Vertigo, BPPV, and Motion Sickness

Information last reviewed: May 2026 — for educational purposes only.

Meclizine (Antivert, Bonine, Dramamine Less Drowsy) is the most widely used antihistamine for vertigo treatment and motion sickness prevention in the United States. It is a piperazine-class H1 histamine receptor antagonist with additional anticholinergic (antimuscarinic) properties. By blocking H1 receptors in the labyrinth (inner ear), vestibular nuclei, and associated nuclei, meclizine reduces the abnormal vestibular signals responsible for the sensation of spinning (vertigo), the associated nausea, and the dizziness that accompanies peripheral vestibular disorders. Its antiemetic effect is an extension of this vestibular suppression — it reduces vomiting triggered by vestibular overactivation.

Meclizine is used for: benign paroxysmal positional vertigo (BPPV) — the most common cause of vertigo; labyrinthitis and vestibular neuritis (inner ear inflammation); Menière's disease (episodes of vertigo, hearing loss, tinnitus, and ear fullness); and motion sickness prevention. Because it has a slower onset (30–60 minutes) and longer duration (12–24 hours) than dimenhydrinate, it is better suited for ongoing vertigo management and motion sickness prevention than for pre-travel acute use where dimenhydrinate may act faster.

What Is Meclizine?

Meclizine is a first-generation antihistamine (H1 antagonist) with anticholinergic activity that suppresses the excitability of the vestibular apparatus and reduces the response of middle ear nerve endings to labyrinthine stimulation. Despite being a first-generation antihistamine (which typically cause sedation), meclizine has notably less sedating properties compared to dimenhydrinate (Dramamine) and promethazine — this is why the "Dramamine Less Drowsy" product uses meclizine rather than dimenhydrinate. This lower sedation profile makes meclizine better tolerated for daytime use in ambulatory vertigo patients.

OTC and Prescription Availability

OTC availability: Meclizine 12.5 mg and 25 mg tablets are available over the counter in the US as Bonine, Dramamine Less Drowsy, and many generics for motion sickness and vertigo — no prescription required. Prescription strength: Antivert 25 mg and 50 mg by prescription — the higher 50 mg dose requires a physician prescription and is used for more severe vertigo (particularly Menière's disease-related) when OTC doses are insufficient.

Strengths and Available Forms

• 12.5 mg tablets (OTC) — lower dose; for mild motion sickness prevention; take 1–2 tablets 1 hour before travel; may repeat every 24 hours
• 25 mg tablets (OTC and Rx) — standard adult dose for vertigo and motion sickness; for vertigo: 25–100 mg daily in divided doses; for motion sickness: 25 mg 1 hour before travel; repeat every 24 hours as needed
• 25 mg and 50 mg tablets (Rx — Antivert) — prescription-strength dosing; 25–100 mg/day for vertigo associated with vestibular disease (Menière's, labyrinthitis); 50 mg for severe episodes
• 25 mg chewable tablets (OTC) — convenient for travel; dissolves more quickly; same efficacy as standard tablets

Meclizine has a slow onset (takes 30–60 minutes to take effect) and a long duration of action (effect lasts 12–24 hours in most patients). Once-daily dosing at night is effective for many vertigo sufferers and reduces residual daytime drowsiness. The drug can be taken with or without food.

Price of Meclizine OTC and Prescription

OTC generic meclizine 25 mg tablets are one of the lowest-cost OTC vertigo medications available. Brand-name Bonine and Dramamine Less Drowsy are slightly more expensive than generic but still affordable. Prescription Antivert costs more but insurance usually covers it. Generic prescription meclizine 25 mg and 50 mg is available at modest cost.

Frequently Asked Questions

Should BPPV be treated with meclizine or with repositioning manoeuvres?

Canalith repositioning manoeuvres (such as the Epley manoeuvre performed by a physician or physiotherapist, or self-applied Semont or Brandt-Daroff exercises) are the first-line treatment for BPPV and are dramatically more effective than medication alone. Multiple randomised trials and systematic reviews confirm that the Epley manoeuvre resolves BPPV in 80%+ of cases after one to two treatments. Meclizine can provide symptomatic relief during acute BPPV episodes but does not reposition the displaced otolith crystals (canaliths) that cause BPPV. Long-term vestibular suppressant use in BPPV may actually slow the brain's natural compensation. Meclizine is appropriate as short-term symptomatic relief pending repositioning, or for other vestibular conditions where repositioning is not applicable.

Can meclizine be used in elderly patients?

Meclizine should be used with caution in elderly patients. Despite being "less sedating" than other antihistamines, it still causes drowsiness and sedation, particularly in the elderly — contributing to fall risk, which is a major concern in older adults. Its anticholinergic properties can worsen urinary retention in men with BPH and may impair cognitive function. The American Geriatrics Society's Beers Criteria lists first-generation antihistamines (including meclizine) as potentially inappropriate in elderly patients due to the sedation and anticholinergic risks. If treatment is necessary in older patients, the lowest effective dose and shortest possible duration are advisable.

How is Menière's disease managed with meclizine versus other treatments?

For acute vertigo episodes in Menière's disease, meclizine (25–50 mg) provides symptomatic vestibular suppression and reduces the severity and duration of acute attacks. However, for long-term Menière's management, the goal is to reduce attack frequency and protect residual hearing — which meclizine neither addresses. Long-term Menière's treatment typically includes: a low-sodium diet, diuretics (acetazolamide, hydrochlorothiazide/triamterene); betahistine (outside the US); intratympanic corticosteroids or gentamicin injections for refractory cases; and vestibular rehabilitation between attacks. Meclizine is a useful acute-use symptom suppressant in the overall management strategy.

← Back to Vertigo Medications