Niaspan

Recommended dosage for Niaspan

ADULTS

The usual starting dose is one 500-milligram tablet taken at bedtime after a low-fat snack. Every 4 weeks, your doctor may increase your dosage by 500 milligrams, up to a maximum dosage of 2,000 milligrams taken once a day, depending on your response to the drug. Women generally respond to lower doses than men do.

Overdosage

Excessive doses of niacin—more than 2,000 milligrams a day—taken for a long period of time can damage the liver or cause a stomach ulcer to flare up. Nausea, vomiting, abdominal cramps, faintness, and yellowish skin and eyes can be warning signs of long-term overdose. If you develop any of these symptoms, check with your doctor without delay.