Dimenhydrinate, the active ingredient in Gravol, works by blocking histamine and acetylcholine in the body. These substances are natural functions of the central nervous system but, when stimulated, can lead to nausea or vomiting. By blocking these substances, Gravol helps alleviate associated symptoms of motion sickness and has additional uses in the prevention of nausea from other sources.

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Gravol, known generically as dimenhydrinate, is an over-the-counter medication primarily used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness. Additionally, it may be used to treat symptoms from conditions such as Meniere’s disease or for nausea resulting from medication side effects or after surgery. Gravol belongs to a class of drugs known as antihistamines, which can also have sedating effects.

Additional information


Gravol is typically used for:

● Prevention and treatment of nausea, vomiting, and dizziness due to motion sickness
● Management of nausea from other causes, such as post-operative or chemotherapy-related
● Relief from vertigo symptoms

Patients are generally advised to:

● Use Gravol 30 to 60 minutes before activities known to cause motion sickness
● Follow dosing instructions as per product labeling or as prescribed by their healthcare provider
● Continue to hydrate and attempt to rest in a position that minimizes head movements


● Gravol can cause drowsiness, so patients should avoid driving or using machinery after taking it
● Consumption of alcohol with Gravol should be avoided due to increased sedation
● It's important to consider underlying health conditions, such as asthma, glaucoma, or prostate enlargement, as Gravol can exacerbate certain conditions
● Caution should be exercised when used in elderly patients or those with liver or kidney disorders

Side Effects

● Drowsiness or sedation
● Dry mouth
● Dizziness
● Blurred vision
● Constipation

More serious but less common side effects that require medical attention include:

● Confusion or hallucinations
● Severe dizziness
● Difficulty urinating
● High-level excitability (especially in children)


● Store Gravol at room temperature, out of direct light and moisture
● Keep the medication away from the bathroom and all medications out of reach of children and pets

Special Precautions

Before taking Gravol, it's important to inform your healthcare provider if:

● You have pre-existing conditions including, but not limited to, glaucoma, seizure disorders, lung disease, kidney or liver disease, or an enlarged prostate
● You are on other medications, as Gravol can interact with sleeping pills, muscle relaxants, and other antihistamines
● You are pregnant or breastfeeding, as Gravol can pass through breast milk, and its safety in pregnancy has not been fully established


Symptoms of Gravol overdose can include severe drowsiness, seizures, and hallucinations. In the event of an overdose, call emergency services or go to the nearest emergency room. It's essential to provide medical professionals with as much information as possible about the overdose including how much Gravol was taken and when.




30 Tablets, 20 Tablets


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