Female Viagra (sildenafil) is a special scientific formula that contributes to sexual satisfaction in woman. This medicine works by allowing more blood to enter the genital area and causing sexual arousal with certain stimulation required. It has the same active ingredient as the usual Viagra – sildenafil and can have some of the effects related to taking this drug. Female Viagra is highly efficient for most people using it and in most cases by increasing the levels of blood testosterone helps the woman to achieve multiple orgasms while having sex. Take the prescribed dosage of Viagra about 40-45 minutes before you are planning to have sex. Once you have taken it you can expect the effects to last for 4 to 6 hours.