Additional Guidlines

CAUTION:

Vitamin B3, Niacin
Skin flushing is the most commonly reported side effect. It lasts for about 15 to 30 minutes and is sometimes accompanied by a prickly or itching sensation, particularly in areas covered by clothing. People taking pharmacological doses of niacin (1.5-6g per day) often experience side effects that can include dermatological complaints such as skin flushing and itching, dry skin, skin rashes including acanthosis nigricans. Gastointestinal complaints such as dyspepsia (indigestion) and liver toxicity have also been reported. High-dose niacin may also elevate blood sugar, thereby worsening diabetes mellitus. Hyperuricemia is another side effect of taking high-dose niacin and may exacerbate gout. Niacin at doses used in lowering cholesterol has been associated with birth defects in laboratory animals, with possible consequences for infant development in pregnant women. Niacin is found in a variety of foods including liver, chicken, beef, fish, cereal, and peanuts.