On call: No-flush niacin
On call
To have benefit, though, niacin has to be absorbed into the bloodstream. Nicotinic acid is well absorbed. "Immediate-release," "crystalline," and "plain" forms of niacin are rapidly absorbed forms of nicotinic acid; in the proper dose, they can improve all three blood lipids, but they also cause flushing and itching. Sustained-release forms of niacin also deliver nicotinic acid to the bloodstream; they cause less flushing, but some preparations have been linked to a significant risk of liver inflammation and other side effects. Intermediate-release niacin delivers effective amounts of nicotinic acid with a modest risk of flushing and a good safety record. Most experts favor intermediate-release niacin.
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.
Sign Me UpAlready a member? Login ».
Disclaimer:
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
