guardian65026, this is actually an old post but I noticed the topic on Medical Questions and was curious to see what, if any effect, taking Viagra has on women. Since no one ever answered the question, I did a little researcha and found this article from womenshealth.org.
"Viagra works by increasing blood flow to the genital area. The penis and the clitoris are analogous organs. If the penis can become erect through Viagra, why cant the clitoris? An erect clitoris is necessary for female orgasm, as it is for males. Thus, Viagra could conceivably work for women who are anorgasmic. There have been a few studies done recently on the use of Viagra in women, but most of them have been performed with too few subjects to make any definite conclusions. The most useful study involved treating 33 postmenopausal women, who complained of sexual dysfunction, with Viagra for a time period of three months. These women were then assessed using the self-administered Index of Female Sexual Function (IFSF) and the global efficacy question (GEQ) Did treatment improve your sexual function? Mean scores showed that lubrication improved by 23.2%, orgasm by 7.4%, and clitoral sensation by 31.3%. 21% of the women noted improvement on the GEQ. However, overall only 18.1% of the women had a significant therapeutic response (more than 60% improvement in IFSF score). Negative side effects included clitoral discomfort and hypersensitivity in 21% of the women, headache and dizziness. This study shows that overall sexual function did not improve significantly. However, since there have been relatively few studies done on this subject, at this point no definite conclusions can be made regarding the role of Viagra in women.
Precautions
Should any normal human being take Viagra to be better than before? Nooooo! This could be like filling up a water balloon that is already full. In men, the term is priapism, which is a very painful prolonged erection. In women, the analogous problem could be pelvic congestion, which is also painful. Viagra is only for people who are already experiencing difficulty with sex."
I also found this article from cosmopolitan magazine.
"Viagra was developed to help men with erectile dysfunction. It works by allowing increased blood flow to the penis, which causes an erection. And, judging by the billions of dollars in sales, Viagra (and similar drugs) is the greatest invention since the wheel — if you happen to be a man who can't get it up. However, the studies done to test its effectiveness on women have yielded less-than-stellar results, probably because men and women are fundamentally different when it comes to desire and arousal. Though the increased blood flow down below has caused some women who've tried the drug to experience physical arousal, it's had little effect on desire.
Should you try Viagra? No, absolutely not! For starters, the Food and Drug Administration has approved it only for men (even though some doctors still prescribe it to their female patients, but that's a whole other issue). And there has been little research on what kinds of side effects it might have on women. The most common reactions that men experience include headaches, indigestion, diarrhea, flushed skin, and dizziness. It's even been known to cause heart attacks and strokes, especially when taken with certain other medications (including recreational drugs like cocaine or ecstasy). Plus, you shouldn't be thinking about taking any prescription medicine unless it's been prescribed for you by your physician!
There are plenty of other ways to heat up your sack sessions. (Take a look through the Carnal Counselor archives for some suggestions.) So, do yourself a favor and try to get creative in bed the old-fashioned way — by relying on your brain, not a little blue pill."