Dimenhydrinate Injection

What is this medication?

DIMENHYDRINATE (dye men HYE dri nate) prevents and treats nausea, vomiting, and dizziness caused by motion sickness. It works by helping your body maintain its sense of balance. It belongs to a group of medications called antihistamines.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

What should I tell my care team before I take this medication?

They need to know if you have any of these conditions:

• Glaucoma
• Heart disease
• Liver disease
• Lung or breathing disease, like asthma or emphysema
• Pain or trouble passing urine
• Phenylketonuria
• Porphyria
• Prostate trouble
• Seizures
• An unusual or allergic reaction to dimenhydrinate, diphenhydramine, tartrazine, other medications, foods, dyes, or preservatives
• Pregnant or trying to get pregnant
• Breast-feeding

How should I use this medication?

This medication is for injection under the skin, into a muscle, or into a vein. It is given in a hospital or clinic setting.

Talk to your care team about the use of this medication in children. Special care may be needed.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

What if I miss a dose?

This does not apply.

What may interact with this medication?

• Alcohol
• MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
• Some medications for allergies, cold, or cough
• Medications that make you sleepy

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medication?

Tell your care team if your symptoms do not start to get better in 1 or 2 days or if they get worse.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your care team if the problem does not go away or is severe.

This medication may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your care team if the problem does not go away or is severe.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medication affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medication. Avoid alcoholic drinks.

What side effects may I notice from receiving this medication?

Side effects that you should report to your care team as soon as possible:

• Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
• Sudden eye pain or change in vision such as blurry vision, seeing halos around lights, vision loss
• Trouble passing urine

Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):

• Confusion
• Constipation
• Dizziness
• Drowsiness
• Dry mouth

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Where should I keep my medication?

This medication is given in a hospital or clinic and will not be stored at home.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.