Since Vidalista 40 is an instructional medication, a patient should speak with a doctor about their medical history to make sure it is the best course of action. Consult your physician or pharmacist for additional details. Avoid taking it more than once a day. The reason tadalafil is referred to as the "weekend treatment" is that, unlike other ED medicines, it lasts for roughly 36 hours. Vidalista 40 must be taken one tablet at a time. This medicine usually helps impotent men get an erection in as short as 30 to 60 minutes if taken before planned interaction. Avoid grapefruits and alcohol when taking this medication since they may lessen its effects.