Vidalista 20 mg belongs to the group of drugs known as PDE5 inhibitors because it contains tadalafil. These medications stop the PDE5 enzyme from functioning. Do not take more than one pill of the recommended medication within 24 hours of the previous dose to avoid overdose symptoms. If your pharmacist has one available, read the Patient Information Leaflet before starting to take tadalafil and before each refill. A sudden loss of vision or hearing and the painful, protracted erections known as priapism are two instances of more serious adverse effects of Vidalista 20 mg. Should you have any questions, speak with your doctor or pharmacist. You should consult a doctor straight away if you experience any of these negative effects while taking tadalafil. View your If you have any questions, see your doctor or pharmacist.