Niacin (Vitamin B 3) (Systemic)
Side Effects of This Dietary SupplementAlong with its needed effects, a dietary supplement
may cause some unwanted effects. Although not all of these side effects may
occur, if they do occur they may need medical attention.
Check with your health care professional immediately
if any of the following side effects occur:
With prolonged use of extended-release niacin
Darkening of urine; light gray-colored
stools; loss of appetite; severe stomach pain; yellow eyes or skin
Other side
effects may occur that usually do not need medical attention. These side effects
may go away during treatment as your body adjusts to the dietary supplement.
However, check with your health care professional if any of the following
side effects continue or are bothersome:
Less common - with niacin only
Feeling of warmth; flushing or redness of skin, especially
on face and neck; headache
With high doses
Diarrhea; dizziness or faintness; dryness of skin; fever; frequent urination; itching of skin; joint pain; muscle aching
or cramping; nausea or vomiting; side, lower back, or stomach pain; swelling of feet
or lower legs; unusual thirst; unusual tiredness or weakness; unusually fast, slow,
or irregular heartbeat
Other side effects not listed above may also occur in some individuals. If
you notice any other effects, check with your health care professional.
|