Vitamin B3 (Niacin)   Uses of this Supplement Alcoholism Anxiety Depression Diabetes Mellitus Hypercholesterolemia Hypoglycemia Insomnia Osteoarthritis Rheumatoid Arthritis   Supplements with Similar Uses View List by Use   Drugs that Interact Summary Aspirin Aspirin-containing Medications Biguanide Antidiabetic Agents Bile Acid Sequestrants HMG-CoA Reductase Inhibitors Insulin Preparations Neomycin Neomycin-containing Medications Nicotine Sulfonylureas Tetracycline Tetracycline-containing Medications   Supplements with Similar Side Effects View List by Side Effect   Supplements with Similar Warnings View List by Warning   Learn More About Nutrition	Look Up > Supplements > Vitamin B3 (Niacin) > SideEffects Supplements with Similar Side Effects as Vitamin B3 (Niacin) Below is a list of side effects for this supplement along with supplements with similar side effects.   blood pressure, low Cysteine diarrhea Bromelain Carnitine (L-Carnitine) Copper Cysteine Glucosamine Iron Phosphorus Potassium Vitamin A (Retinol) Vitamin C (Ascorbic Acid) Vitamin D Vitamin E flushing Vitamin K heartburn 5-Hydroxytryptophan (5-HTP) Iron hepatotoxic Dehydroepiandrosterone (DHEA) liver damage Creatine Vitamin K nausea 5-Hydroxytryptophan (5-HTP) Bromelain Calcium Cartilage Cysteine Iron Magnesium Potassium S-Adenosylmethionine (SAMe) Vitamin A (Retinol) Vitamin E vomiting Bromelain Cysteine Magnesium Potassium Vitamin D Zinc