Is there a womens viagra (sildenafil)? I'm 51 years old and I seem to have lost interest in sex. I'm post menopause

That . That is a very common problem. There are safe medications to take during menopause to increase sex drive. However, please see your gynecologist and discuss this carefully. There are many advertised supplements that are not safe, so be sure that your gynecologist recommends a safe treatment for you. Be sure to share with your gynecologist any personal or family history of any medical problems as this is very important in determining appropriate treatment.