Viagra was hyped for women , but the follow up was disappointing. This is because female sexuality is multi-focused. Male is much more focused on the penis. Pfizer is currently experimenting on European women with Viagra. In reading the reports it appears that Viagra is specifically an end organ blood flow agent.
Women are complex sexually.
We have desire. That can be without a need to perform. We have the need for pleasure. This can mean soft gentle touches. It can mean clitoral stimulation.