Rimantadine is an antiviral medicine used to treat or prevent influenza A in people who are at least 17 years old. Rimantadine is also used to prevent influenza A in children ages 1 to 16 years old.
Rimantadine may not be effective during every flu season because certain strains of the virus may be resistant to this medicine. Rimantadine should not be used in place of getting a yearly flu shot. The Centers for Disease Control recommends an annual flu shot to help protect you each year from new strains of influenza virus.
Rimantadine may also be used for other purposes not listed in this medication guide.
uses
What is Rimantadine (Flumadine) used for?
- Influenza Prophylaxis
- Influenza A
warnings
What is the most important information I should know about Rimantadine (Flumadine)?
You should not use this medicine if you are allergic to rimantadine or a similar medicine called amantadine.
Tell your doctor if you have ever had:
- a seizure; or
- liver or kidney disease.
It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
You should not breastfeed while using this medicine.
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Side Effects
What are the side effects of Rimantadine (Flumadine)?
Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
- extreme drowsiness, or if you fall asleep suddenly even after feeling alert;
- a light-headed feeling, like you might pass out;
- depression, agitation, aggression, behavior changes, hallucinations, thoughts of hurting yourself; or
- a seizure.
Side effects such as headache, dizziness, feeling weak or tired, anxiety, vomiting, and stomach pain may be more likely in older adults.
Common side effects may include:
- nausea, vomiting, loss of appetite, stomach pain;
- dry mouth;
- sleep problems (insomnia); or
- dizziness.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Pregnancy & Breastfeeding
Can I take Rimantadine (Flumadine) if I’m pregnant or breastfeeding?
It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
You should not breastfeed while using this medicine.
Interactions
What drugs and food should I avoid while taking Rimantadine (Flumadine)?
Do not receive a nasal flu vaccine while using rimantadine, and for at least 48 hours after your last dose. The vaccine may not work as well during this time, and may not fully protect you from disease.
Do not drink alcohol. Dangerous side effects could occur.
Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.
Dosage Guidelines & Tips
How to take Rimantadine (Flumadine)?
Use Rimantadine (Flumadine) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.
Start taking rimantadine within 24 to 48 hours after flu symptoms begin. Keep taking rimantadine for the full prescribed length of time. Your symptoms may improve before the infection is completely cleared.
Follow your doctor's dosing instructions very carefully.
Tell your doctor if the person taking this medicine has trouble swallowing the rimantadine tablet.
Call your doctor if your symptoms do not improve, or if they get worse.
Store at room temperature away from moisture and heat.
Skip the missed dose and use your next dose at the regular time. Do not use two doses at one time.
Overdose Signs
What happens if I overdose on Rimantadine (Flumadine)?
Overdose symptoms may include agitation, hallucinations, or uneven heart rate.
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Images
G, 1911
Color: orange
Shape: oval
Form: film coated
Imprint: G, 1911
FOREST, FLUMADINE100
Color: peach
Shape: oval
Form: film coated
Imprint: FOREST, FLUMADINE100
111, COR
Color: orange
Shape: round
Form: film coated
Imprint: 111, COR