Can Vitamin Supplements Cause Kidney Problems?

Vitamins are generally considered safe, but taking too much of certain vitamins can cause problems, especially if you have kidney disease. Vitamins A, E, and K are more likely to accumulate in the body and can lead to dizziness, nausea, and even death if taken in excess. Vitamin C is also a concern for people with kidney disease, as large doses can cause an accumulation of oxalate in bones and soft tissue. Over-the-counter medications, common prescriptions, and nutritional supplements can also have serious effects on kidney function. Kidney vitamins contain vitamins B1, B2, B6, B12, folic acid, niacin, pantothenic acid, biotin and a small dose of vitamin C.

A survey of approximately 26,000 people found that more than a third reported taking herbal supplements. Fat-soluble vitamins (A, D, E, and K) should be avoided unless prescribed by a doctor. Vitamin D is absorbed differently than other supplements and can help the heart, muscles, and mind. Research is being conducted to determine how natural supplements can be used for health benefits without causing harm. It's important to tell your doctor about all the vitamins, herbal remedies and nutritional supplements you take.

The best way to know if a supplement is safe is to ask your doctor to review all the ingredients. People with healthy kidneys who eat a variety of foods from all food groups can get enough vitamins and minerals without taking supplements. Taking too much vitamin D can cause constipation, nausea, kidney stones and kidney damage. If you have decreased kidney function or are at risk of kidney disease, it's best not to take dietary supplements or vitamin doses above the recommended daily allowance (RDA). La Dra.

Wei Ling Lau is an assistant professor of nephrology at the University of California-Irvine who studies vascular calcification and cerebral microhemorrhages in chronic kidney disease.If you need to take supplements to get enough vitamins and minerals every day, be sure to monitor your health closely. Determine what stage of kidney disease you are in by calculating your glomerular filtration rate (GFR) and start monitoring your health. With the right precautions and guidance from your doctor, you can safely take vitamin supplements without risking your health.

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