Niacin / Nicotinamide (Niacin (nicotinic acid) / Nicotinamide (niacinamide)) — Uses, Dosage, Side Effects & Safety

Drug class: Water-soluble vitamin (Vitamin B3); Antihyperlipidemic agent

Overview

Niacin and nicotinamide are two forms of vitamin B3, an essential nutrient your body needs for energy production, metabolism, and maintaining healthy skin, nerves, and digestion. Niacin (nicotinic acid) is also used in higher doses to help lower cholesterol and triglyceride levels, while nicotinamide is mainly used to treat or prevent vitamin B3 deficiency (pellagra) and certain skin conditions. These vitamins work by helping your body convert food into energy and supporting the function of enzymes involved in many cellular processes. Niacin, in particular, can improve cholesterol by lowering LDL (bad cholesterol) and triglycerides and raising HDL (good cholesterol). Most people get enough vitamin B3 from their diet, but supplementation may be needed in cases of deficiency, certain medical conditions, or as prescribed for cholesterol management. Always use niacin or nicotinamide as directed by your healthcare provider, as high doses can cause side effects.

Frequently Asked Questions about Niacin / Nicotinamide

What is the difference between niacin and nicotinamide?

Both are forms of vitamin B3, but niacin (nicotinic acid) is used for cholesterol management and can cause flushing, while nicotinamide is used mainly for deficiency and does not cause flushing.

Can I take niacin or nicotinamide with other vitamins?

Yes, but avoid taking multiple supplements containing vitamin B3 to prevent overdose. Always check with your healthcare provider.

How can I reduce flushing caused by niacin?

Taking niacin with food, using extended-release formulations, and avoiding alcohol or hot drinks around dosing can help reduce flushing.

Is niacin safe during pregnancy?

Niacin and nicotinamide are generally considered safe at recommended dietary doses in pregnancy, but high doses should be avoided unless prescribed.

What foods are high in vitamin B3?

Foods rich in vitamin B3 include meats, fish, poultry, nuts, legumes, and enriched grains.

Can niacin help lower cholesterol?

Yes, prescription-strength niacin can lower LDL cholesterol and triglycerides and raise HDL cholesterol, but should only be used under medical supervision.

What are signs of vitamin B3 deficiency?

Symptoms include dermatitis, diarrhea, dementia, and if severe, can lead to pellagra.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.