![]() If you take any medicines, talk with your healthcare provider before taking a niacin supplement. Some examples are medicines that slow blood clotting, lower cholesterol, and treat gout. Nicotinic acid may keep medicines from working well. If you’re pregnant, don’t take niacin supplements. Don't take niacin without talking to your healthcare provider if you have liver problems or an active peptic ulcer. If you’re allergic to aspirin, you may be sensitive to tartrazine. This is more of a risk with the sustained-release form. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or. Niacin is also known as vitamin B3, one of the B-complex vitamins. Niacin can cause liver damage when taken long-term at high doses over a long time. Niacin deficiency can cause diarrhea, confusion ( dementia ), tongue redness/swelling, and peeling red skin. Niacinamide doesn’t affect the cardiovascular system or change lipid levels. A sustained-release form doesn’t prevent flushing. This may also cause intense itching or burning. ![]() A dose of 100 mg taken on an empty stomach may cause flushing of the skin. Niacin dilates the blood vessels in the skin, especially in the upper body. Inflammation of the lining of the mucous membranes (nose, mouth, throat, and vagina) Skin that is dry and cracked, with a brownish color Because of this, diets mainly based on corn and corn flour (and low in tryptophan) may lead to pellagra.ĭark red, even-shaped blotches on the skin, more likely on skin exposed to sunlight and air Supplemental nicotinamide, a derivative of niacin, has been reported to decrease transepidermal water loss. If you’re taking this medicine, you’ll likely need to take niacin supplements.Ĭereals and grains have very little niacin. It can cause pellagra (a niacin deficiency). Isoniazid is a medicine used to treat tuberculosis. You may also need more if you have chronic diarrhea or if you drink a lot of alcohol. You need more niacin if you have certain cancers, such as carcinoid. If you notice a skin rash along with other symptoms after taking a vitamin B supplement, an allergy may be to blame. Examples of these foods include milk and eggs. Foods high in tryptophan may prevent niacin deficiency. The amino acid tryptophan can be converted into niacin. Often a person lacks a chemical or enzyme needed to digest a. 'An intolerance typically has to do with a metabolic process,' says Sicherer. 'All that typically happens pretty quick,' says Sicherer it can only take minutes. This is based off the average intake in healthy, breastfed infants. A life-threatening allergic reaction (anaphylaxis) can cause a drop in blood pressure or loss of consciousness, he adds. The RDA is the recommended dietary allowance. You need about 4.4 mg to 6.6 mg of niacin for every 1,000 calories you eat. How much niacin you need depends on how many calories you eat.
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