Bill Cosby -- I Got My Quaaludes from a Gynecologist

Bill Cosby got the Quaaludes he used to drug women from a gynecologist.

The info was just made public by the Washington Post, which got hold of previously sealed documents in the sexual assault lawsuit filed by Andrea Constand.

Cosby says he got 7 scripts for the drug, which was prescribed under the pretense of a bad back.

A lawyer who worked for the gyno, who died 13 years ago, says the doctor was unscrupulous and was the go-to doc for the rich and famous when it came to prescribing recreational drugs.

But according to court docs, the gynecologist almost came to blows with Cosby when he found out about Tamara Green, one of the women who accused Cosby of sexual assault. He warned the comedian never to do it again.