What happens if I overdose?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include agitation, confusion, hallucinations, or uneven heart rate.

What should I avoid while taking rimantadine?

Do not use FluMist nasal influenza "live vaccine" while you are being treated with rimantadine and for at least 48 hours after you stop taking rimantadine. The nasal vaccine may not be as effective if you receive it while you are taking rimantadine. Before taking rimantadine, tell your doctor if you have received a nasal flu vaccine within the past 14 days.

Avoid coming into close contact with someone who has a weak immune system, such as a person who is taking steroids, being treated for cancer, or has a bone marrow disorder or an illness such as HIV or AIDS. If you have a type of influenza that is resistant to rimantadine, your body may actually shed that virus and a person with a weak immune system could easily become ill from being near you.

What are the possible side effects of rimantadine?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using rimantadine and call your doctor at once if you have a seizure (black-out or convulsions).

Less serious side effects may include:

nausea, vomiting, diarrhea, loss of appetite, stomach pain;
dry mouth;
sleep problems (insomnia);
dizziness;
headache; or
anxiety, trouble concentrating.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.

What other drugs will affect rimantadine?

Before taking rimantadine, tell your doctor if you are using any of the following drugs:

cimetidine (Tagamet);
aspirin or acetaminophen (Tylenol); or
nasal flu vaccine (FluMist).

This list is not complete and there may be other drugs that can interact with rimantadine. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about rimantadine.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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