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21st Century Health Care, C-500, 250 Tablets

Posted by alvinlky on Jun 06, 2013 | Verified Purchase

Excellent product at a economical price. The product and comes from a Company, I have trusted for years. Recommended.

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good value for money

Posted by adhd-researcher on Jun 26, 2016 | Verified Purchase

you cannot absorb more than 500 mg every few hours so all the brands with 1000 mg, is that just to induce diarrhea when you are constipated ? you know: 1 gram every 15 min till you have loose stools and if you count all the grams of vit C you took until your "explosion", that is the limit of vit C you need per day it is cheap and in the "Ascorbic Acid" form, so NOT REAL VITAMINE C better take ascorbate, but even NOW FOOD , don't specify it is NON GMO sourced and many products are manufactured in CHINA have to read the small labels to find this out

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Great value

Posted by ReaCovery on Nov 20, 2015 | Verified Purchase

Great value for money if you want a medium dose, instant release ascorbic acid kind of C in a large quantity. Vitamin C is water soluble and is excreted from the body quickly. Instant release only lasts 2 - 3 hours, so its best to take a smaller amount, often through the day, rather than a high dose tablet once a day. Either that or take a slow release formula. But something is better than nothing and this is a good value something.

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very good ones

Posted by iHerb Customer on Nov 05, 2013 | Verified Purchase

tried them before and recomend them strongly

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Posted by iHerb Customer on Oct 07, 2013 | Verified Purchase

Vitamin C is one of the highest cost ratio and beneficop, because the action of antioxidant and diuretica are incredible. Is supporting me 100% in the cutting phase. more dislocated parabens for 21st Century

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Posted by iHerb Customer on Jun 21, 2013 | Verified Purchase

that very good product and bargran.

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21st Century, C-500, 250 Tablets

Posted by iHerb Customer on Aug 19, 2017 | Verified Purchase

Very very good product

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Posted by iHerb Customer on Jul 29, 2017 | Verified Purchase

Hyvä hinta Ceellä !

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Labs produkts!!!

Posted by iHerb Customer on Jun 13, 2017 | Verified Purchase

Labs produkts par labu cenu!!! Katram cilvēkam nepieciešams, jo organisms pats neražo C vitamīnu!!

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Posted by iHerb Customer on Apr 25, 2017 | Verified Purchase

So far, so good. I've been taking these for a while, no weird side effects yet. I take 1 twice a day, I read somewhere your body can't absorb more than 500 mg at a time. Does anyone know if there's any truth in that?

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