Vitamin D toxicity: What if you get too much? - Mayo Clinic
2022年3月22日 · Vitamin D toxicity, also called hypervitaminosis D, is a rare but potentially serious condition that occurs when you have excessive amounts of vitamin D in your body. Vitamin D toxicity is usually caused by large doses of vitamin D supplements — not by diet or sun exposure. That's because your body regulates the amount of vitamin D produced ...
Vitamin D - Mayo Clinic
2023年8月10日 · Use vitamin D cautiously if you're taking drugs processed by these enzymes. Digoxin (Lanoxin). Avoid taking high doses of vitamin D with this heart medication. High doses of vitamin D can cause hypercalcemia, which increases the risk of fatal heart problems with digoxin. Diltiazem (Cardizem, Tiazac, others).
Vitamin D and MS: Is there any connection? - Mayo Clinic
2023年4月19日 · Research studies have shown that taking 400 IU or more of vitamin D a day lowers the risk of MS in women. But if you're diagnosed with vitamin D deficiency, it may be appropriate to take up to 50,000 IU a week for up to three months. Once you've reached the recommended level of vitamin D, switch to a maintenance dose.
Vitamin D deficiency: Can it cause high blood pressure?
2023年4月7日 · A low vitamin D level seems to increase the risk of heart disease and death due to the condition. A low vitamin D level may make a person more likely to have high blood pressure and diabetes. These conditions are risk factors for heart disease. It's unclear whether a daily vitamin D supplement protects against heart attacks and strokes.
Vitamin A - Mayo Clinic
This weight-loss drug can decrease the absorption of food sources of vitamin A. Your doctor might suggest that you take a multivitamin with vitamin A and beta-carotene while taking this medication. Retinoids. Don't use vitamin A supplements and these oral prescription drugs at the same time. This could increase the risk of high vitamin A blood ...
High-dose vitamin C: Can it kill cancer cells? - Mayo Clinic
2023年12月15日 · Interest in using very high doses of vitamin C as a cancer treatment began as long ago as the 1970s when it was discovered that some properties of the vitamin may make it toxic to cancer cells. Initial studies in humans had promising results, but these studies were later found to be flawed.
Vitamin B-12 - Mayo Clinic
2024年6月28日 · The recommended daily amount of vitamin B-12 for adults is 2.4 micrograms (mcg). Most people can get enough vitamin B-12 in the foods they eat. But people who follow a vegetarian or vegan diet should eat nutritional yeast and other foods fortified with vitamin B-12. Or they can take a low-dose multivitamin that includes 2.4 mcg of vitamin B-12.
Vitamin D deficiency - Mayo Clinic
2022年10月7日 · To meet this level, choose foods that are rich in vitamin D. For example, choose fatty fish, such as salmon, trout, tuna and halibut, which offer higher amounts of vitamin D, or fortified foods, such as milk and yogurt. Don't overdo it, though. Very high levels of vitamin D have not been shown to provide greater benefits.
Vitamins for MS: Do supplements make a difference? - Mayo Clinic
2019年11月8日 · A high concentration of one vitamin might cause a relative deficiency of another. Vitamin D may be an exception. So far, vitamin D is one of the most intensely studied supplements for MS. For several years, there has been a growing interest in the role of low vitamin D levels and an increased risk of MS attacks or exacerbations.
Calcium and calcium supplements: Achieving the right balance
2022年11月1日 · To absorb calcium, your body also needs vitamin D. A few foods naturally contain small amounts of vitamin D, such as canned salmon with bones and egg yolks. You can also get vitamin D from fortified foods and sun exposure. The RDA for vitamin D is 600 international units (15 micrograms) a day for most adults.