Overview

DIMENHYDRINATE What is dimenhydrinate. Dimenhydrinate is a first-generation antihistamine commonly used for motion sickness, nausea, vomiting, and vertigo (a sensation that you or your surroundings are spinning). It is similar to meclizine (another over-the-counter antihistamine used for motion sickness and vertigo), but dimenhydrinate is considered to be more sedating. Compared to meclizine, which takes an hour to take effect but lasts 24 hours, dimenhydrinate has a faster onset of action of about 15 to 30 minutes but takes about an hour. Dimenhydrinate can be taken as 50-100 mg every four to six hours as needed for a maximum of 400 mg daily.   How can dimenhydrinate help alleviate certain long COVID symptoms?  Some patients have reported neurological symptoms of long COVID, such as vertigo and persistent dizziness.

How it works:

Blocks histamine type 1 receptors

Dosage Form: Tablet Tablet - 50mg; Chewable tablet - 50mg

Common Usage: motion sickness, vertigo, nausea/vomiting