GROUP RAISES QUESTIONS ON VIAGRA.(MAIN)

Byline: Associated Press

WASHINGTON -- Many men may be taking Viagra to treat impotence that was caused by other pills such as antidepressants and blood pressure drugs, raising the question of whether some could be cured simply by adjusting their prescriptions.

The consumer group making that point Wednesday also cited 174 reports of Viagra users suffering side effects, including 31 deaths, in petitioning the government to strengthen Viagra's safety warnings.

The Food and Drug Administration remains convinced that Viagra is safe when used by the right men, but said it will consider Public Citizen's concerns.

The drug's label already warns …