Gravol is a trade name for the non-prescription drug dimenhydrinate. Dimenhydrinate is used to prevent and treat nausea and vomiting. As your body gets used to the drug (even after taking it for only a few days), it needs more and more of it to give you the same effect (you build up a tolerance).
This drug is sometimes abused because large doses can give you a "high" and cause hallucinations.
To prevent the abuse of this drug, pharmacists in Alberta may keep it behind the counter.
Gravol can also affect your concentration and movements. Younger children will feel all these effects more than adults. The elderly are more sensitive to these effects, especially if they have delirium or dementia.
For these reasons, you should use Gravol with caution if you are driving or doing other things where you have to be alert. You shouldn’t take this drug if you have chronic lung diseases like bronchitis or emphysema, or if you have glaucoma.
At lower doses, you can have feelings of well-being and feeling high. Using Gravol with alcohol, codeine, and other depressant drugs makes these effects stronger. Exercising or being exposed to hot weather can make you dizzy when using this drug.
An overdose can cause:
Children will have these symptoms at lower doses than adults. They are especially prone to convulsions.
An overdose may be life threatening. Anyone who thinks they (or someone else) has taken too much Gravol, please call PADIS (Poison and Drug Information Service) at
Withdrawal symptoms include:
I’m concerned about my, or someone else’s, misuse of gravol. What can I do?
If you’re concerned about your own, or someone else’s misuse of gravol, or would simply like more information on drug use, contact the Addiction & Mental Health 24 Hour Helpline at 1-866-332-2322.
The Poison and Drug Information Service (PADIS) is a free, confidential, 24/7 service for all Albertans. Staff are specially trained in the assessment and management of exposures to drugs and toxins, and are available by calling 1-800-332-1414.
Current as of: July 10, 2019
Author: Poison & Drug Information Service, Alberta Health Services
This material is not a substitute for the advice of a qualified health professional. This material is intended for general information only and is provided on an "as is", "where is" basis. Although reasonable efforts were made to confirm the accuracy of the information, Alberta Health Services does not make any representation or warranty, express, implied or statutory, as to the accuracy, reliability, completeness, applicability or fitness for a particular purpose of such information. Alberta Health Services expressly disclaims all liability for the use of these materials, and for any claims, actions, demands or suits arising from such use.