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A 29-year-old member asked:

Can water-soluble vitamins taken in excess have a definite toxic effect?

1 doctor answer1 doctor weighed in
Dr. Bac Nguyen
Family Medicine 25 years experience
Yes it can: Either water or fat-soluble vitamins, excess can cause problem. For instance, excessive use of vitamin c (water-soluble), can increase risk of kidney stones. Vit c also enhances iron absorption, thus problem for those having iron overload such as hemochromatosis. Moderation is key! why take these to excess? They may cause u health problem at the same time costing money. Consult doc. Good luck.
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Last updated Dec 9, 2013


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