Is 10 grams of Vitamin B5 too much

that sounds like a lot, its to get rid of acne it supposedly helps. I've read up and they say it helps. and that extra b5 is excreted through urine. so it shouldn't hurt you but i'm still skeptical

Here is some data from sources that seem to have researched the matter.

Linus Pauling Institute at OSU - (B5) Toxicity

"Pantothenic acid is not known to be toxic in humans. The only adverse effect noted was diarrhea resulting from very high intakes of 10 to 20 grams/day of calcium D-pantothenate. However, there is one case report of life-threatening eosinophilic pleuropericardial effusion in an elderly woman who took a combination of 10 mg/day of biotin and 300 mg/day of pantothenic acid for two months..."

http://lpi.oregonstate.edu/infocenter/vi...

Vitamin B5 -- Pantothenic Acid by Elson M. Haas M.D.

"Over 1,000 mg. daily has been taken for over six months with no side effects; when 1,500 mg. or more is taken daily for several weeks, some people experience a superficial sensitivity in their teeth. However, it is possible that if B5 is taken without other B vitamins, it may create metabolic imbalance."

http://www.healthy.net/scr/article.asp?i...

Causes and symptoms of vitamin B5 toxicity

"At standard dietary and supplemental levels, vitamin B5 is not associated with any adverse effects. Yet, at very high supplemental dosages, those that are hundreds or thousands times the Recommended Dietary Allowance (RDA) level, ... has been found to cause mild diarrhea.