what are the side effects of high doses of vitamin c?
42060
['Diarrhea.', 'Nausea.', 'Vomiting.', 'Heartburn.', 'Abdominal cramps.', 'Headache.', 'Insomnia.']
359215
When taken as directed, multivitamins are not expected to cause serious side effects. Less serious side effects may include: upset stomach; headache; or.
67050
Most people do not commonly experience side effects with vitamin D, unless too much is taken. Some side effects of taking too much vitamin D include weakness, fatigue, sleepiness, headache, loss of appetite, dry mouth, metallic taste, nausea, vomiting, and others.
542219
Some side effects of taking too much vitamin D include weakness, fatigue, sleepiness, headache, loss of appetite, dry mouth, metallic taste, nausea, vomiting, and others.
596946
['headache.', 'dizziness.', 'diarrhea.', 'stomach cramps.', 'vomiting.']
150453
Although too much dietary vitamin C is unlikely to be harmful, megadoses of vitamin C supplements might cause: Diarrhea. Nausea. Vomiting.
1456646
['Vitamin C. Although vitamin C has relatively low toxicity, high doses of it can cause gastrointestinal disturbances, including diarrhea, cramps, nausea, and vomiting. ... ', 'Vitamin B3 (niacin). ... ', 'Vitamin B6 (pyridoxine). ... ', 'Vitamin B9 (folate).']
686507
High doses can also cause nausea, diarrhea, stomach cramps, fatigue, weakness, headache, blurred vision, rash, and bruising and bleeding. When applied to the skin: Vitamin E is LIKELY SAFE for most healthy people when applied to the skin.
1409969
Signs of severe overuse over a short period of time include dizziness, blurred vision and slowed growth. Vitamin A toxicity can also cause severe birth defects and may increase the risk for bone loss and hip fractures.
955991
['headache,', 'throat irritation,', 'nausea,', 'vomiting,', 'stomach upset,', 'diarrhea,', 'back pain,', 'stuffy nose,']
1401052
['Decreased Appetite.', 'Diarrhea.', 'Dizziness.', 'Headache.', 'Nausea.', 'Skin Discoloration.', 'Stomach Cramps.', 'Vomiting.']
562687
['headache.', 'constipation.', 'diarrhea.', 'nausea.', 'vomiting.', 'rash.']
808652
['Vitamins A, D, E and K are fat soluble, which means they are stored in the body and if taken in high doses can be toxic.', 'High doses of some water-soluble vitamins, such as vitamin B6, can also become toxic.', 'Large folate intakes can hide vitamin B12 deficiencies.']
1099707
Too much vitamin C may cause digestive symptoms The most common side effect of high vitamin C intake is digestive distress. In general, these side effects do not occur from eating foods that contain vitamin C, but rather from taking the vitamin in supplement form.
561618
['nausea,', 'vomiting,', 'upset stomach,', 'diarrhea,', 'constipation,', 'skin changes such as peeling or discoloration,', 'flu-like symptoms,', 'hair loss,']
291238
For adults, the recommended daily amount for vitamin C is 65 to 90 milligrams (mg) a day, and the upper limit is 2,000 mg a day. Although too much dietary vitamin C is unlikely to be harmful, megadoses of vitamin C supplements might cause: Diarrhea.
962186
Side effects of treatment Vitamin C injections are safe when used for FDA-approved reasons at typical doses. The most common side effects are pain and swelling at the injection site. Very high doses of vitamin C injections also seem to have few side effects. Some of these include nausea and pain at injection site.