December 1, 2015
Recommended Topic Related To:


"Nov. 12, 2012 -- The requirement to fast before a cholesterol check can be a major inconvenience.

People who forget to fast may be told to reschedule their appointments. For those who remember, sitting in a doctor's waiting room with "...


Side Effects


Cardiovascular: Atrial fibrillation and other cardiac arrhythmias, orthostasis, hypotension.

Gastrointestinal: Dyspepsia, vomiting, diarrhea, peptic ulceration, jaundice, abnormal liver function tests. Skin: Mild to severe cutaneous flushing, pruritus, hyperpigmentation, acanthosis nigricans, dry skin. Metabolic: Decreased glucose tolerance, hyperuricemia, gout.

Eye: Toxic amblyopia, cystoid macular edema.

Nervous System/Psychiatric:Headache.

Read the Niacor (niacin tablets) Side Effects Center for a complete guide to possible side effects


HMG-CoA Reductase Inhibitors: See WARNINGS, Skeletal Muscle.

Antihypertensive Therapy:Nicotinic acid may potentiate the effects of ganglionic blocking agents and vasoactive drugs resulting in postural hypotension.

Aspirin: Concomitant aspirin may decrease the metabolic clearance of nicotinic acid. The clinical relevance of this finding is unclear.

Other: Concomitant alcohol or hot drinks may increase the side effects of flushing and pruritus and should be avoided at the time of drug ingestion.

Read the Niacor Drug Interactions Center for a complete guide to possible interactions

This monograph has been modified to include the generic and brand name in many instances.

Last reviewed on RxList: 10/27/2008

Side Effects

Niacor - User Reviews

Niacor User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Niacor sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Cholesterol Management

Tips to keep it under control.