How much calcium from supplements is too much?
Too much calcium per day - how much is too much? Learn about the recommended daily intake from food & supplements and why taking too much calcium can be harmful. ConsumerLab's answer explains.
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Deanna8625
April 10, 2016Many multi-vitamins seem to provide vast "overdoses". I found a three-a-day multi that does this. But I only take one a day so as to cut the dosage to a more reasonable level. A doctor told a friend of mine to take children's multi' so to help with this problem. I have no financial interest in any of these products.
Lawonda8624
April 10, 2016I get a lot of good information from the Quett question and answer program . But I've never found anywhere where I can get information on vitamin intake and how to judge what you should take when you have kidney disease . I have a stage for chronic kidney disease which naturally takes much less of the bacteria etc. in my stomach . Does this affect the amount of supplements and vitamins that I take. ? I'm currently taking 50+ four women because I am 80 five years old . Hope you can answer this question for me thank you
Hi Lawonda - You may find this CL Answer about supplements and kidney function helpful: https://www.consumerlab.com/answers/can-taking-a-lot-of-supplements-really-damage-the-kidneys/supplements-kidney-disease/
Ira8623
April 10, 2016A don't think ANYONE in the nutritional science arena would would ever indicate that 500 mg of vitamin C which is 833% DV is excessive. I also believe there is a difference between filling the nutritional deficiencies and optimal cellular health. I agree that in general one should not exceed the upper tolerable limit, but I disagree with the answer ConsumerLab has provided here to this question.
Hi Ira - We must disagree with you. Nutritional experts convened by the National Academies - not people who sell supplements - have determined what the nutritional needs are for vitamin C for optimal health, and it is nowhere near 500 mg per day. You can find the values, by age, here: www.consumerlab.com/RDAs. The idea of "optimal cellular health" is a marketing term. In fact, as noted in our Vitamin C Review ( https://www.consumerlab.com/reviews/vitamin-c-supplement-review/vitaminc/ a large study of physicians who took a sensible daily multivitamin (containing 60 mg of vitamin C) had a 9% reduction in cataracts, but that benefit was lost in the subset of those doctors who were also give 500 mg of vitamin C per day. Many studies have shown that too much of an antioxidant from supplements can negate the benefits found with lower doses.