How many 500mg Vitamin B5 pills (pantothenic acid) for acne a day?

I am wondering how many pills for I take of Vitamin B5 (pantothenic acid)

for my acne each day? They don't say how many you should take on the bottle I got.

These are 500mg pills I got from my health store. Thanks.

According to one small study published in 1995 by Dr. Lit-Hung Leung, high doses of Vitamin B5 resolved acne and decreased pore size. Leung's study gave 45 Asian males and 55 Asian females varying doses of 10-20g of pantothenic acid (100,000%-200,000% of the US Daily Value), 80% orally and 20% through topical cream. Leung supposedly noted improvement of acne within one week to one month of the start of the treatment.

Critics are quick to point out the flaws in Dr. Leung's study, however: it was not a double-blind placebo controlled trial. Also, this is the only study looking at the effect of Vitamin B5 on acne, and few if any dermatologists prescribe high-dose pantothenic acid.

So, this one study has major flaws, and its results are dubious. I would not take B5 for acne. One study cannot be used to justity adoption of a medical treatment. There are many other, well-studied options for treating acne that are available both over-the-counter or through a dermatologist that are known to be effective. B5 isn't one of them. Good luck!