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Warwick, R. What is niacin flush? Symptoms of niacin flush. Why people take large doses of niacin. Is it dangerous? How to prevent niacin flush.
Differences between forms of niacin. The bottom line. Read this next. Niacinamide: Benefits, Uses and Side Effects. Niacin and Depression. Medically reviewed by Timothy J. Legg, Ph. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile.
Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. A niacin flush is a side effect of taking large doses of niacin vitamin B3 supplements.
The flush happens when the niacin causes the small blood vessels in your skin to dilate so more blood can rush through. Almost everyone who takes large doses of niacin experiences this flush. It isn't harmful, but it can scare you if you don't know it's coming.
While no one needs large doses of niacin, some people take it as a supplement to reduce the risk of heart disease and atherosclerosis. Large daily doses of niacin may help to lower LDL cholesterol the bad cholesterol and increase HDL cholesterol the good form of cholesterol.
A niacin flush starts about 30 minutes after you take a large dose 30 to 50 milligrams or more. The flush includes reddening of the skin accompanied by a burning or itching sensation. The flush gets better over time and is usually gone within an hour or two. The niacin flush is generally harmless, but may occasionally be accompanied by a headache, dizziness, or drop in blood pressure.
If you experience these symptoms with a niacin flush, you should call your doctor for advice. You won't get the niacin flush reaction after taking multiple vitamins that contain smaller amounts of niacin.
It only happens when you take massive doses. Stay out of direct sunlight and don't even dream of treating your tingling skin with a heating pad, hot water bottle or a dip in the hot tub. Forgo that alcoholic beverage or spicy food — both of which will intensify the flush — until after your symptoms have subsided, which could be anywhere from a few minutes to two hours. Zinc tablets and some other herbal supplements can also make you more likely to experience the niacin prickles.
Read more : Vitamin Toxicity Symptoms. Although niacin flush can be unpleasant, it's not dangerous. However, large doses of niacin in amounts greater than 2, milligrams can cause potentially serious side effects, according to the Mayo Clinic. Call your doctor if you experience any of these symptoms:. Ingesting large doses of niacin over the long term can result in additional health issues , including diabetes, gout and liver damage. Read more : 43 Supplements Exposed.
Sustained-release tablets release niacin into your system over many hours. Because the vitamin enters your bloodstream a little at a time, the likelihood of experiencing niacin flush is greatly reduced. However, the fact that your liver has to process the vitamin over many hours can cause liver damage in some people.
No-flush niacin tablets contain inositol nicotinate , a substance that reportedly converts slowly to niacin in the body. However, the amount of actual niacin delivered to the body is minimal — hence no flushing. The small amount of vitamin B3 delivered to the body from the substance also has little effect on your blood lipids, according to the British Columbia Drug and Poison Information Centre. Niaspan , a prescription, time-release form of niacin, dissolves more slowly than regular tablets but more quickly than the nonprescription, time-release form of the vitamin.
This form of vitamin B3 positively affects your lipid profile with reduced risk of flushing and isn't as hard on your liver. The downside is that Niaspan is available only by prescription and is the most expensive form of niacin. Avoid taking niacinamide as an alternative to avoid niacin flush. Although, like niacin, it helps the body convert food into glucose, it does nothing to help your blood lipid profile, according to WebMD. Besides taking a time-release form of the supplement, there are a couple of other things you can do to prevent an uncomfortable niacin flush.
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