But states could limit the number of pills and prescriptions for the impotence drug.

The ads come as Viagra is losing market share to other impotence drugs.

Pfizer has jumped 35 percent this year on optimism about its new impotence drug, Viagra.

Toward the end of 1993, Pfizer began testing Viagra as an impotence drug.

The market for impotence drugs has stagnated since last summer, when reports linked the medicines to a rare form of blindness.

Some of her patients who use impotence drugs without their partners' knowledge also live in constant fear of being found out, she said.

Viagra is being treated like other impotence drugs, which are subject to the same restrictions, they said.

Some of the nation's biggest health insurers have decided not to pay for Viagra, the new male impotence drug, under their prescription drug plans.

Medicaid currently spends about $15 million a year on impotence drugs, proponents of the measure said.

Others have been waiting to use an impotence drug and, with a new entrant, have decided now is the time, he said.