Niacin is used alone or with other medicines to treat high cholesterol and triglyceride (fat-like substances) levels in the blood. This may help prevent the development of pancreatitis (inflammation of the pancreas) and other problems caused by high levels of cholesterol and triglycerides in the blood. Niacin is also used to help lower risk of heart attack in patients with a history of heart attack and hyperlipidemia.

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  • Niacinol, Niacor, Niaspan, Nicotinex, Slo-Niacin
  • Abdominal or stomach pain
    feeling of warmth
    flushing or redness of the skin, especially on the face and neck
    nausea or vomiting
    rash or itching
    runny nose
    stuffy nose
    Incidence not known
    Dizziness or faintness
    dryness of the skin
    frequent urination
    joint pain
    muscle aching or cramping
    side, lower back, or stomach pain
    swelling of the feet or lower legs
    unusual thirst
    unusual tiredness or weakness
    unusually fast, slow, or irregular heartbeat
  • For high cholesterol and triglycerides: For oral dosage forms (extended-release capsules, oral solution, or regular tablets): Adults—500 to 2000 milligrams (mg) one to three times a day. Children—Use and dose must be determined by your doctor. For oral dosage form (extended-release tablets): Adults and children older than 16 years of age—At first, 500 milligrams (mg) per day, taken at bedtime. After 4 weeks, your doctor will increase your dose to 1000 mg per day, taken at bedtime. However, the dose is usually not more than 2000 mg per day. Children 16 years of age and younger—Use and dose must be determined by your doctor.