TRENTON, N.J. (AP) — The little blue pill that's helped millions of men in the bedroom is turning white. Drugmaker Pfizer is launching its own cheaper generic version of Viagra rather than lose most sales when the impotence pill gets its first generic competition next week.

Pfizer Inc. will begin selling the white pill at half the $65-a-pill retail price on Monday, when its patent-protected monopoly ends. Generic maker Teva Pharmaceuticals can start selling its version then, but isn't disclosing the price.

Many more generics go on sale next summer, which will steadily slash the price of generi...