Common Side Effects of Niacin Extended-Release
Niacin extended-release has been studied thoroughly in clinical trials. In these studies, side effects are always documented and compared to side effects that occur in a similar group of people not taking the medicine. Based on these studies, the most common side effects of
niacin extended-release include:
- Flushing of the face and neck -- up to 88 percent
- Headache -- up to 11 percent
- Diarrhea -- up to 8 percent
- Nausea and vomiting -- up to 8 percent
- Stomach pain -- up to 5 percent
- Indigestion or heartburn -- up to 5 percent
- Generalized pain -- up to 5 percent
- Runny nose -- up to 5 percent
- Rash and itching -- up to 5 percent.
Niacin Extended-Release Side Effects to Report
There are a number of side effects with niacin extended-release that you should report immediately to your healthcare provider. These include, but are not limited to:
- Unexplained muscle pain, tenderness, or weakness, especially if you have a fever or feel ill
- Severe stomach pain and loss of appetite
- Severe nausea or vomiting
- Fainting spells or dizziness
- Passing brown or dark-colored urine
- Passing gray-colored stools
- Yellowing of the skin or the whites of the eyes
- Heart palpitations (irregular heartbeats)
- Shortness of breath or wheezing
- Feeling more tired that usual
- Unexplained rash or itching.