What is the most common symptom of niacin toxicity?


Quick Answer

The primary symptom of niacin toxicity is referred to as the "niacin flush" which is a tingling and burning sensation in the face and chest with flushed or reddened skin, according to WebMD. To prevent the "niacin flush" when taking high doses, it is recommended to take aspirin approximately 30 minutes before taking niacin.

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Full Answer

Other symptoms of taking too much niacin include diarrhea and upset stomach, but these symptoms usually fade over time. Niacin is an important vitamin that everyone needs to stay healthy, but it's necessary to determine the recommended dosage based on weight and sex to prevent taking too much of it. Many individuals can get enough of this vitamin with a balanced diet and do not need to take supplements.

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