Skip to main content
Medically Approved

Dimenhydrinate injection dosage: A detailed guide

twitter share buttonfacebook share buttonlinkedin share buttonemail article button
Form and strengthDosageFAQHow it's usedCouponAsk your doctor
Doctors prescribe dimenhydrinate injection for preventing or treating nausea, vomiting, or vertigo caused by motion sickness. You receive it by injection once every 4 hours.
Medically reviewed by Christina Bookwalter PharmD, MS MEd, BCPS, BCACP
Updated on

This article describes dimenhydrinate injection’s dosages and strength and gives details on how it’s given. You’ll also find information on cost savings and coupon options for dimenhydrinate. If you want to know more about dimenhydrinate injection, talk with your doctor or pharmacist.

Dimenhydrinate injection is a generic medication. It’s not available in a brand-name version.

Need a diagnosis or prescription quickly? For certain health conditions, Optum Perks offers personalized on-demand care with no appointment required. For $25, answer a few questions online and receive a diagnosis and treatment plan from a board certified healthcare professional in 15 minutes or less. Get started here.

Form and strength of dimenhydrinate

Dimenhydrinate injection comes as follows:

  • Form: liquid solution, given by injection into a muscle or vein by a healthcare professional
  • Strength: 50 milligrams per milliliter (mg/mL)

Dosage of dimenhydrinate

This article describes the recommended dosages for dimenhydrinate injection. The drugmaker provides these dosages.

Usual recommended dosage of dimenhydrinate in adults

Usually, doctors prescribe a standard dosage of dimenhydrinate injection. Then, they’ll adjust it over time as needed. Ultimately, your doctor will prescribe the smallest dosage of dimenhydrinate injection that gives the desired outcome.

Dosage for the prevention and treatment of nausea, vomiting, or vertigo caused by motion sickness

  • Dose: 50–100 mg
  • Frequency: every 4 hours

Dosage of dimenhydrinate in children

Doctors may prescribe dimehydrinate injection to prevent or treat nausea, vomiting, or vertigo caused by motion sickness in children. They usually base children’s dosages on body weight in kilograms (kg). For reference, 1 kg is equal to about 2.2 pounds (lb).

The recommended dosage for children is 1.25 mg/kg, given four times a day. For example, a child that weighs 20.5 kg (45 lb) would be given 25 mg four times per day. The maximum daily dosage is 300 mg.

Dosage adjustments for dimenhydrinate

Your doctor will prescribe a dosage of dimenhydrinate injection based on several factors. These include:

  • how severe your condition is
  • your age
  • how your body responds to the medication

Frequently asked questions

Below are answers to some commonly asked questions about dimenhydrinate injection and its dosage.

Can dimenhydrinate be used for sleep? If so, what is the dosage?

It isn’t likely that doctors would prescribe dimenhydrinate injection just for sleep. Dimenhydrinate isn’t approved to help with sleep. It’s approved to treat or prevent nausea, vomiting, or vertigo caused by motion sickness. But it can make you feel drowsy.

Talk with your doctor to learn more about the treatment options that may work best for sleep.

Is dimenhydrinate used long term?

No, doctors don’t typically prescribe dimenhydrinate injection as a long-term treatment. Instead, it’s usually recommended for short-term use.

If you have questions about how long you’ll be getting dimenhydrinate injection, talk with your doctor.

How dimenhydrinate is used

Typically, a healthcare professional will give you dimenhydrinate injection. It’s given as an injection into a muscle or vein.

Talk with your doctor to learn more about how dimenhydrinate injection is given.

Dimenhydrinate coupon

Visit this page to access Optum Perks coupons and get price estimates for dimenhydrinate when you use the coupons. These coupons can provide significant savings on your prescription costs.

Note: Optum Perks coupons cannot be used with insurance copays or benefits.

Download the free Optum Perks Discount Card to save up to 80% on some prescription medications.

Pill bottle with text 'Starts at $4'

Free prescription coupons

Seriously … free. Explore prices that beat the competition 70% of the time.

Get free card

What to ask your doctor

This article describes the usual recommended dosage for dimenhydrinate injection. If your doctor prescribes this medication, they’ll determine the dosage that’s best for you.

Here’s a list of some possible questions you may want to ask your doctor:

  • How long will it take for a dose of dimenhydrinate to work?
  • How does the dosage of dimenhydrinate injection compare with other drugs for my condition?
  • If you increase my dosage of dimenhydrinate injection, will I have a higher risk of side effects?

Disclaimer: Optum Perks has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional. You should always consult your doctor or another healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.

Article resources