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What Are the Symptoms of Too Much Vitamin D or C?

By Ashley Schwader

Vitamin D is fat soluble, whereas vitamin C is water soluble. However both vitamins, when taken in excess, can cause multiple side effects. According to the National Institutes of Health, vitamin C is naturally found in red peppers, broccoli, strawberries and some fortified cereals. Vitamin D is naturally found in items like the flesh of fish, cheese and egg yolks. Because both vitamins are found in small amounts in food, most overdosing comes with taking too many vitamin supplements explains the NIH. If you are experiencing any of these side effects, or are concerned about vitamin supplementation, be sure to talk with your family physician.

Hypervitaminosis D

The Mayo Clinic explains that hypervitaminosis D, is a side effect of vitamin D toxicity. It is a potentially serious but treatable medical condition that occurs when there is a buildup of calcium in your blood from the high levels of vitamin D. Symptoms include nausea, vomiting and loss of appetite. If you are experiencing any of these conditions speak with a family doctor about hypervitaminosis D.

Gastrointestinal Difficulties

Gastrointestinal difficulties can come with too much vitamin C. The Mayo explains that the upper tolerable limit for adults is 2,000 milligrams of vitamin C per day. If this limit is exceeded the gastrointestinal system will start to show signs upset, including diarrhea, vomiting and abdominal cramps. These are also symptoms of other difficulties, so be sure to consult with your doctor about vitamin C toxicity.

Kidney Stones

With both vitamin D and C, kidney stones are a common symptom of toxicity. The NIH explains that with high vitamin C intakes it can potentially increase urinary oxalate and uric acid excretion, which could contribute to the formation of kidney stones. In addition the excess calcium in the blood from too much vitamin D can cause stones to occur. If you are experiencing kidney stones, talk with a physician about possible explanations, including high vitamin C and D intake.

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