Vigora 100 Mg is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. The medicine contains sildenafil citrate as the key ingredient that helps men find better erection and have a satisfying sex session. The sildenafil citrate boosts the blood flow to penis and thus enables it to get erected. The medicine should not be used to protect from sexually transmitted diseases (STDs). It is always a decent idea to use protection before having sexual intercourse.