Side Effects of Rimantadine

Common Side Effects of Rimantadine

Rimantadine has been studied thoroughly in clinical trials. In these studies, the side effects that occur in a group of people taking the drug are documented and are then compared to side effects that occur in another group of people not taking the medicine. This way, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine.
In these studies, the most common rimantadine side effects included:
  • Insomnia -- in up to 3.4 percent of people
  • Nausea -- up to 2.8 percent
  • Nervousness -- up to 2.1 percent
  • Difficulty concentrating -- up to 2.1 percent
  • Dizziness -- up to 1.9 percent
  • Vomiting -- up to 1.7 percent
  • Loss of appetite -- up to 1.6 percent.
Other common rimantadine side effects, occurring in 1 to 1.5 percent of people, included:
  • Headaches
  • Fatigue
  • Dry mouth
  • Abdominal pain (stomach pain)
  • Weakness.

Final Thoughts on Rimantadine Side Effects

It is possible that you may experience some or none of the rimantadine side effects listed in this article. Unfortunately, it can be difficult to tell whether any particular side effect (such as fatigue) is actually caused by rimantadine or other factors (such as the flu itself). Therefore, make sure to let your healthcare provider know if you develop any side effects while taking rimantadine or if something "just does not seem right." While it may not be a side effect, your healthcare provider will be able to diagnose and treat the problem.
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