VIAGRA GIVES MANAGED CARE MEANING.(MAIN)

Byline: ELLEN GOODMAN

BOSTON -- Bless your heart, Neil.

Here we are in a sexual frenzy about the drug that is raising male spirits. On the joke circuit, Viagra has replaced Monica. On the cover of Time, the little blue pill has become the Man of the Year. In the newspaper, the word erection is now part of the hard news vocabulary. And double-entendres about this growth stock are spilling over the airwaves like water over Niagara.

Today, men who never talked about fear of failure are sharing. Phone lines to urologists are jammed by rising expectations. There are 150,000 prescriptions already written, the price of Pfizer stock is soaring higher than …