RINGASKIDDY, Ireland — When Pfizer started manufacturing its anti-impotence drug Viagra in southwestern Ireland, locals experienced a spike in sexual arousal, five-legged rabbits proliferated, and visitors took U-turns back to their spouses…

RINGASKIDDY, Ireland — When Pfizer started manufacturing its anti-impotence drug Viagra in southwestern Ireland, locals experienced a spike in sexual arousal, five-legged rabbits proliferated, and visitors took U-turns back to their spouses…