Tadalafil Femalefil is a medication designed specifically for women who may experience sexual dysfunction, particularly female sexual arousal disorder (FSAD) or low sexual desire. It contains Tadalafil, which is the same active ingredient found in medications like Cialis, commonly used for erectile dysfunction (ED) in men. Tadalafil is a PDE5 inhibitor that works by increasing blood flow to certain areas of the body, including the genital area, which may help enhance sexual arousal and satisfaction in women.