Viagra may help millions of men--and even some women--but it is not a sexual cure-all. It is not an aphrodisiac; it will not work in the absence of desire. Nor will it make a normal erection harder or make one last longer. It will not, in and of itself, save a marriage. In fact, there are some risks to taking Viagra that everyone, whether sexually dysfunctional or merely dissatisfied, should consider before rushing to the pharmacy:
--HEADACHES One out of 10 men in the clinical trials developed blinding headaches that grew more severe at higher doses.
--SEEING BLUE Because the eyes...