Diphenhydramine 25mg
Classic antihistamine for motion sickness and allergy.
Estimated: $8–12 per pack View Product
25mg tablets — motion sickness & vertigo relief
Order FDA-Approved Meclizine 25mg — Prevent Motion Sickness & Relieve Vertigo
25mg chewable or regular tablets, 30-count pack
Meclizine HCl 25mg is an antihistamine used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness. It is also used to relieve symptoms of vertigo associated with inner ear disorders. The active ingredient in Bonine and Dramamine Less Drowsy Formula, meclizine provides effective motion sickness prevention with less sedation than older antihistamines like dimenhydrinate.
Meclizine 25mg is indicated for the relief of prevention and treatment of motion sickness (car, boat, plane, train), vertigo and dizziness from inner ear disorders (benign paroxysmal positional vertigo, labyrinthitis, Meniere's disease), nausea and vomiting associated with vestibular disturbance. It is approved for OTC use and does not require a prescription for standard adult doses.
Meclizine works by blocking H1 histamine receptors in the brain — particularly in the vomiting center and the vestibular pathways that regulate balance and motion perception. By reducing vestibular stimulation signaling, it prevents the nausea and dizziness that occur when the brain receives conflicting motion signals from the eyes and inner ear. It also has mild anticholinergic properties that contribute to its anti-emetic effects. Onset is 1 hour; duration 8–24 hours.
For motion sickness prevention: Take 25–50mg (1–2 tablets) 1 hour before travel begins. May repeat every 24 hours during travel. For vertigo: 25–100mg per day in divided doses as directed by your physician. Adults and children 12 and over only. Do not exceed 100mg in 24 hours. The 30-count pack provides 30 doses of motion sickness prevention.
Meclizine 25mg OTC is for adults and children 12 and older. Avoid in patients with glaucoma, enlarged prostate, or difficulty urinating. Use with caution in patients with liver disease. Not recommended during pregnancy without medical advice — consult your OB/GYN. Consult your doctor if vertigo is severe, persistent, or accompanied by hearing loss or severe headache.
Drowsiness is the most common side effect, though less pronounced than with dimenhydrinate (regular Dramamine). Other effects include dry mouth, blurred vision, and urinary retention. Avoid alcohol and other sedatives when taking meclizine. Use caution when driving or operating machinery. Elderly patients are more sensitive to anticholinergic side effects.
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Do I need a prescription to buy Meclizine 25mg?
No. Meclizine 25mg is an over-the-counter (OTC) medication available without a prescription for standard adult use.
How quickly will my order arrive?
We offer standard and expedited shipping to all 50 US states. Contact us for estimated delivery times to your location.
Is the generic version as effective as the brand name?
Yes. All OTC medications we carry must meet FDA quality and efficacy standards. Generic versions contain the same active ingredient at the same strength as their branded equivalents.
Meclizine is an antihistamine that works on the inner ear and brain to reduce signals that cause nausea and vomiting. It is effective for motion sickness (car, boat, plane) and vertigo (dizziness). Source: MedlinePlus: Meclizine.
For motion sickness prevention, take meclizine 1 hour before travel. The effects last up to 24 hours, so one dose usually covers a full day of travel. For vertigo, take as needed at the onset of symptoms.
Yes — meclizine is a first-generation antihistamine that commonly causes drowsiness. Do not drive or operate machinery after taking it. The sedative effect can actually help during long travel. Compare with Diphenhydramine, which is more sedating.
No. Alcohol significantly increases the sedative effects of meclizine, causing excessive drowsiness, dizziness, and impaired coordination. Avoid alcohol completely while taking meclizine.
Dramamine Original Formula contains dimenhydrinate (a sedating antihistamine similar to diphenhydramine). Dramamine Less Drowsy Formula contains meclizine 25mg — the same active ingredient. Meclizine-based formulas are preferred for longer trips and for people seeking less sedation.
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Healthcare Professional & Medical Reviewer, Promedic
Andrew Gaon is a healthcare professional and medical reviewer at Promedic, where he helps ensure that medical content is accurate, evidence-based, and easy for patients to understand. He reviews articles for clinical accuracy, current treatment guidelines, and patient safety, ensuring information meets high editorial and healthcare standards. Andrew is dedicated to providing reliable, trustworthy medical information that empowers patients to make informed healthcare decisions.