If a woman takes Viagra what will happen?

The clitoris will become engorged with blood.

she will injoy more 

Nothing since she (probably) doesn't have a penis

look up "viagra mechanism of action" as no one here is completely correct.

"Yes there is gentle blood flow improvement - however, that doesn't necessarily equate to sexual enjoyment," says Dr Anand Patel, a GP specialising in sexual problems. "Give Viagra to a man and he's generally pretty happy because his outward sign of arousal is an erection and then he can use that for pleasure. With a woman, you improve blood flow to the genitals, but there are more factors at play."

"The real reason for men to take Viagra is because they want to have sex and they can’t get or sustain an erection," she says. "It's easy to see how medication could cause a huge increase in blood supply and hence inflation of the blood vessels which cause the erection. It has nothing to do with 'desire'."She points out that relatively few women are troubled by anything similar. While women do experience increased genital blood flow during sex, it doesn't follow that female arousal difficulties are related to problems here."In women, the main problem is not really being interested in sex with their current (or often any) partner," she says. "So many women tell me they love their men but they would 'rather have a cup of tea'."In fact, low libido in women is a complex issue, with a wide range of potential causes. These can range from relationship problems to hormonal conditions, and should be addressed on a case-by-case basis. But to put it extremely simply, mental and physical arousal are two different things.

I have heard that it can give her a buzz, but it wont make her feel desperate for sex or anything

still nothing..............

her c l i t will stand..............

Viagra enhances erectile dysfunction in men similar effect on women. 

her clitoris will get ten times bigger

she will grow penis