Vitamin C - Mayo Clinic
2023年8月10日 · Taking vitamin C with oral contraceptives or hormone replacement therapy might increase your estrogen levels. Protease inhibitors. Oral use of vitamin C might reduce the effect of these antiviral drugs. Statins and niacin. When taken with vitamin C, the effects of niacin and statins, which might benefit people with high cholesterol, could be ...
Too much vitamin C: Is it harmful? - Mayo Clinic
2022年4月28日 · The recommended daily amount for vitamin C is 75 milligrams (mg) a day for women and 90 mg a day for men. During pregnancy, 120 mg a day are recommended. The upper limit for all adults is 2,000 mg a day. Although too much dietary vitamin C is unlikely to be harmful, large doses of vitamin C supplements might cause: Diarrhea; Nausea; Vomiting ...
Do the benefits of vitamin C include improved mood? - Mayo Clinic
2022年10月8日 · In some studies, participants reported that vitamin C lowered their anxiety levels. More research is needed. But in the meantime, eat plenty of fruits and vegetables rich in vitamin C, such as oranges and red peppers. If you also take a supplement, try not to exceed the upper limit of 2,000 milligrams of vitamin C a day.
Ascorbic acid (intravenous route) - Mayo Clinic
Ascorbic acid injection is used to treat scurvy (Vitamin C deficiency) in patients who cannot take the medicine by mouth. It is used for short term treatment (up to 1 week) only. This medicine is to be given by or under the direct supervision of your doctor.
High-dose vitamin C: Can it kill cancer cells? - Mayo Clinic
2023年12月15日 · Subsequent well-designed, randomized, controlled trials of vitamin C in pill form found no such benefits for people with cancer. Despite the lack of evidence, some alternative medicine practitioners continue to recommend high doses of vitamin C for cancer treatment.
Vitamin B-12 - Mayo Clinic
2024年6月28日 · Vitamin B-12 deficiency is associated with dementia and low cognitive function, but it's not clear whether vitamin B-12 supplements might help prevent or treat dementia. Athletic performance. Unless you have a vitamin B-12 deficiency, there's no evidence that vitamin B-12 supplements will boost your energy or make you a better athlete.
Vitamin D - Mayo Clinic
2023年8月10日 · Vitamin D supplements are used to treat adults with severe vitamin D deficiency, resulting in loss of bone mineral content, bone pain, muscle weakness and soft bones (osteomalacia). Osteoporosis. Studies suggest that people who get enough vitamin D and calcium in their diets can slow bone mineral loss, help prevent osteoporosis and reduce bone ...
Vitamin E - Mayo Clinic
2023年8月10日 · Use caution when taking vitamin E and other drugs affected by these enzymes, such as omeprazole (Prilosec, Zegerid). Statins and niacin. Taking vitamin E with statins or niacin, which might benefit people with high cholesterol, could reduce niacin's effect. Vitamin K. Taking vitamin E with vitamin K might decrease the effects of vitamin K.
Ascorbic acid (oral route) - Mayo Clinic
Vitamin C may be used for other conditions as determined by your health care professional. Claims that vitamin C is effective for preventing senility and the common cold, and for treating asthma, some mental problems, cancer, hardening of the arteries, allergies, eye ulcers, blood clots, gum disease, and pressure sores have not been proven.
Vitamin A - Mayo Clinic
The association between use of vitamin A supplements and reduced risk of lung, prostate and other types of cancer is unclear. Measles. Vitamin A supplements are recommended for children with measles who are at an increased risk of vitamin A deficiency. Research suggests that supplementation might reduce death due to measles. Vitamin A deficiency.