There doesn’t seem to be much detailing into the effects that Viagra would have on any woman. It’s possible entirely that the effects would be largely negligible, but they would have some potential benefits. For any woman, nitric oxide has a familiar effect that it does on any man. By regulating blood flow, nitric oxide can improve the sexual function & orgasms of women.
For a woman to witness the orgasm, there is a certain amount of vaginal & labial pressure needed. These pressure levels are then controlled by elevated levels of blood flowing into your clitoris. While there has been no recent research to confirm the effects, it’s plausible that Viagra could enhance the blood flow to female genitalia, which can result in a growth in sensitivity, arousal, and the likelihood of gaining orgasm.