Borderliner
Active member
National Institute of Health says 10 mg is upper level of safe per day. Like you said, many take 2 or 3 times that.
Loc Doc
I'd like to see it. Wonder how that was determined.
The rda for vit c in adult males is 90 mg. And is based primarily on the prevention of deficiency disease (scurvy), rather than the proactive promotion of optimum health. I take about 7-8 grams vit c a day and have taken as much as 15 grams a day.
There is no rda for borax so how the nih determined 10mg is the upper dose for safe use is interesting. What I can tell you is I know dozens of folks including some docs who take more than that and report no ill effects.
b