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Berocca is a brand of effervescent drink and vitamin tablets containing B vitamins and vitamin C, manufactured by Bayer. [citation needed] Berocca was originally established in Switzerland in 1969 by Roche, and is available in a number of countries worldwide. [citation needed]
Emergen-C is an effervescent, powdered drink mix vitamin supplement manufactured by Alacer Corp. The Emergen-C product line was introduced in 1978. [ 1 ] Alacer was established as a private company in 1972, focusing on vitamin supplements containing vitamin C .
Vitamin C in doses higher than 1 g increases oxalate and urate excretion and may cause kidney stones. [11] Third, the safety of this herbal extraction combination has not been established. And with herbs and dietary supplements in general, we only have the manufacturers’ word on the label for what’s in them. [12]
There is no evidence that vitamin C supplementation decreases the risk cardiovascular disease, [134] although there may be an association between higher circulating vitamin C levels or dietary vitamin C and a lower risk of stroke. [135] There is a positive effect of vitamin C on endothelial dysfunction when taken at doses greater than 500 mg ...
In the United States, a multivitamin/mineral supplement is defined as a supplement containing three or more vitamins and minerals that does not include herbs, hormones, or drugs, where each vitamin and mineral is included at a dose below the tolerable upper intake level as determined by the Food and Drug Board, and does not present a risk of ...
About 70–90% of vitamin C is absorbed by the body when taken orally at normal levels (30–180 mg daily). Only about 50% is absorbed from daily doses of 1 gram (1,000 mg). Even oral administration of megadoses of 3g every four hours cannot raise blood concentration above 220 micromol/L. [19]