Vitamin C (Ascorbic Acid)
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heartburn, stomach cramps, headache, and other side effects. The chance of getting these side effects increases the more vitamin C you take. Doses higher than 2000 mg per day might not be safe and may cause a lot of side effects, including kidney stones and severe diarrhea. In people who have had a kidney stone, doses greater than 1000 mg per day greatly increase the risk of kidney stone recurrence.
Vitamin C is likely safe for pregnant or breast-feeding women when taken in the recommended amount of 120 mg per day. Taking too much vitamin C during pregnancy can cause problems for the newborn baby.
Do not take vitamin C in doses greater than those found in basic multivitamins if:
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