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  1. 2021年1月4日 · Niacin is a form of vitamin B3 made in the body from tryptophan. It's found in many foods including meat, fish, milk, eggs, green vegetables, and cereals. Niacin is required for the proper...

    • Benefits
    • Medical uses
    • Risks
    • Administration
    • Definition
    • Treatment

    Having enough niacin, or vitamin B3, in the body is important for general good health. As a treatment, higher amounts of niacin can improve cholesterol levels and lower cardiovascular risks. Niacin has other benefits. There's good evidence that it helps reduce atherosclerosis, or hardening of the arteries in some people. For people who have already...

    As a cholesterol treatment, there are good studies showing that niacin can boost levels of good HDL cholesterol and lower triglycerides. Niacin also modestly lowers bad LDL cholesterol. It's often prescribed in combination with statins for cholesterol control, such as Crestor, Lescol, or Lipitor.

    However, niacin is only effective as a cholesterol treatment at fairly high doses. These doses could pose risks, such as liver damage, gastrointestinal problems, or glucose intolerance. So don't treat yourself with over-the-counter niacin supplements. Instead, get advice from your health care provider, who can prescribe FDA-approved doses of niacin...

    Since niacin can be used in different ways, talk to your health care provider about the best dosage for you.

    Everyone needs a certain amount of niacin -- from food or supplements -- for the body to function normally. This amount is called the dietary reference intake (DRI), a term that is replacing the older and more familiar RDA (recommended daily allowance). For niacin, the DRIs vary with age and other factors:

    If your doctor prescribes niacin, you might want to take it with food. This can prevent upset stomach. To reduce flushing -- a harmless but uncomfortable side effect of niacin that describes redness and warmth in the face and neck -- your health care provider might recommend taking niacin along with aspirin, an NSAID painkiller, or an antihistamine...

  2. Niacin deficiency is a condition that occurs when a person doesn't get enough or can't absorb niacin or its amino acid precursor, tryptophan. In the United States, niacin deficiency is...

  3. 2022年11月22日 · Niacin, also known as vitamin B3, is one of the eight water-soluble B vitamins. Your body needs it to function properly. You typically get the vitamin through the foods you eat. Some people take...

  4. 2024年6月25日 · Vitamin B complex is a supplement that contains eight B vitamins that perform important and related roles in your body’s cellular function.

  5. 2024年6月20日 · The good cholesterol can start to act like bad cholesterol and increase your risk of disease in your heart and blood vessels. According to research into HDL cholesterol:

  6. 2024年1月8日 · Experts believe HDL cholesterol may act in a variety of helpful ways that tend to reduce your risk for heart disease: HDL cholesterol scavenges and removes low-density lipoprotein (LDL) -- or "bad"...