Disclaimer: This article is for informational purposes only and does not constitute medical advice. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.

Overview

Dimenhydrinate is an antihistamine used widely in Canada under various brands.

Gravol® contains dimenhydrinate, an active ingredient found in several Canadian brands such as Gravol Extra Strength and Gravol Kids. These medications are formulated to help with symptoms related to nausea and vomiting. Dimenhydrinate belongs to the antihistamine drug class, commonly used in over-the-counter formulations across Canada.

Generic:Dimenhydrinate
Class:Antihistamine (H1 receptor antagonist)
Category:digestive
Prescription Required
Available in Canada

How Gravol® Works

Works by blocking histamine receptors to reduce nausea-related signals.

Dimenhydrinate blocks H1 histamine receptors in the brain, particularly in the vomiting center and the inner ear. By preventing histamine from binding, it helps decrease signals that can lead to feelings of nausea and related symptoms.

Dosage Instructions of Gravol®

Available in tablets, chewables, and liquid forms in Canada.

In Canada, Gravol® is available as standard tablets, chewable tablets, and liquid suspensions suitable for different age groups and preferences. These formats allow flexible dosing options for users.
Follow package or doctor instructions; avoid exceeding recommended amounts.

Dosage varies by age and product form. It is important to follow the instructions on the packaging or consult a healthcare professional to avoid overdosing. Adults and children have different dose recommendations, and exceeding doses can increase side effect risks.

Storage Instructions

Store at room temperature away from moisture and heat. Keep Gravol® in its original packaging at room temperature, away from direct sunlight, moisture, and heat. Proper storage ensures medication effectiveness and safety.

Side Effects of Gravol®

Common side effects include drowsiness; serious ones require medical attention.

Common side effects of dimenhydrinate include drowsiness, dry mouth, and dizziness. Serious side effects, though rare, may include allergic reactions such as rash or difficulty breathing. Seek medical advice if unusual symptoms occur.

Important Safety Information About Gravol®

Not recommended for certain conditions; follow Health Canada warnings.

Health Canada advises caution when using Gravol® for people with conditions like glaucoma, asthma, or prostate enlargement. It is important to disclose all health conditions to your healthcare provider before use.

Drug Interactions

Avoid alcohol and other sedatives while taking this medication.

Dimenhydrinate can interact with alcohol, sedatives, tranquilizers, and other medications that cause drowsiness. Combining these substances may increase side effects such as excessive sedation.

Brands & DIN Number of Gravol®

Brand Names

  • Gravol Extra Strength
  • Gravol Kids
  • Gravol Motion Sickness

Key Takeaways

  • 1• Gravol® contains dimenhydrinate, an H1 antihistamine.
  • 2• Available OTC in tablets, chewables, and liquids.
  • 3• Blocks histamine receptors to reduce nausea signals.
  • 4• Common side effects include drowsiness and dry mouth.
  • 5• Avoid alcohol and sedatives when using Gravol®.
  • 6• Store at room temperature, away from moisture.
  • 7• Consult healthcare providers before use, especially with health conditions.

Frequently Asked Questions

Updated:April 8, 2026