That popular blue pill called Viagra is now available online.

It's a first for the drug industry, and patients will still need a doctor's prescription to buy the erectile dysfunction medicine.

Pfizer, the maker of Viagra, also is offering three free pills with the first order and 30 percent off the second order. Viagra is $25 a pill.

Pfizer is trying to tackle the problem of fake versions of the drug being sold online.

Associated Press