Upset stomach, nausea, vomiting, diarrhea Jaundice (yellowing of the skin or eyes).Ĭommon side effects of Flush Free Niacin may include:įlushing (sudden warmth, redness, or tingly feeling)
Severe warmth or redness under your skin Unexplained muscle pain, tenderness or weakness Ī light-headed feeling, like you might pass out High blood sugar-increased thirst, increased urination, dry mouth, fruity breath odor Heart attack symptoms-chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating Get emergency medical help if you have signs of an allergic reaction: hives difficult breathing swelling of your face, lips, tongue, or throat.įlush Free Niacin may cause serious side effects.
