Rimantadine (Oral Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

• Difficult or labored breathing
• Shortness of breath
• Tightness in the chest
• Wheezing

Get emergency help immediately if any of the following symptoms of overdose occur:

• Anxiety
• Chest pain or discomfort
• Dizziness
• Dry mouth
• Fainting
• Fast, slow, or irregular heartbeat
• Hyperventilation
• Irregular heartbeats
• Irritability
• Lightheadedness
• Nervousness
• Pounding or rapid pulse
• Restlessness
• Seeing, hearing, or feeling things that are not there
• Shaking
• Trouble with sleeping

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Abdominal or stomach pain
• Acid or sour stomach
• Belching
• Continuing ringing or buzzing or other unexplained noise in the ears
• Diarrhea
• Difficulty with concentrating
• Headache
• Hearing loss
• Heartburn
• Impaired concentration
• Indigestion
• Lack or loss of strength
• Loss of appetite
• Nausea
• Rash
• Shakiness and unsteady walk
• Sleepiness or unusual drowsiness
• Stomach discomfort, upset, or pain
• Unsteadiness, trembling, or other problems with muscle control or coordination
• Unusual tiredness or weakness
• Vomiting

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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