Why it is Prescribed
Niacin is used with diet changes (restriction of cholesterol and fat intake) to reduce the amount of cholesterol and certain fatty substances in your blood. Niacin is also used to prevent and treat pellagra (niacin deficiency), a disease caused by inadequate diet and other medical problems. Niacin is a B-complex vitamin.
How it Works
Niacin comes as a tablet and an extended-release (long-acting) tablet to take by mouth. The regular tablet usually is taken two to three times a a day with meals, and the extended-release tablet is taken once a day, at bedtime, with food. Follow the directions on your prescription label or package label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take niacin exactly as directed. Do not take more or ...
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Why it is Prescribed
Niacin is used with diet changes (restriction of cholesterol and fat intake) to reduce the amount of cholesterol and certain fatty substances in your blood. Niacin is also used to prevent and treat pellagra (niacin deficiency), a disease caused by inadequate diet and other medical problems. Niacin is a B-complex vitamin.
How it Works
Niacin comes as a tablet and an extended-release (long-acting) tablet to take by mouth. The regular tablet usually is taken two to three times a a day with meals, and the extended-release tablet is taken once a day, at bedtime, with food. Follow the directions on your prescription label or package label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take niacin exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Swallow the extended-release tablets whole; do not split, chew, or crush them.
Your doctor will probably start you on a low dose of niacin and gradually increase your dose.
Continue to take niacin even if you feel ...
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Other Uses
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
Overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Precautions
Before taking niacin,
tell your doctor and pharmacist if you are allergic to niacin, aspirin, tartrazine (a yellow dye in some processed foods and drugs), or any other drugs.
tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially anticoagulants (blood thinners) such as warfarin (Coumadin), medications for high blood pressure or diabetes and other vitamins. If you take insulin or oral diabetes medication, your dose may need to be changed because niacin may increase the amount of sugar in your blood and urine.
tell your doctor if you drink large amounts of alcohol and if you have or have ever had diabetes; gout; ulcers; allergies; jaundice (yellowing of the skin or eyes); or gallbladder, heart, or liver disease.
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Possible Side Effects
Niacin may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
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Special Dietary Concerns
If you take niacin to reduce the amount of cholesterol and fats in your blood, eat a low-cholesterol, low-fat diet. Follow the diet prescribed by your doctor.
Storage Conditions
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.