averta tablet contains sildenafil which belongs to the group of medicines called phosphodiesterase type 5(PDE5) inhibitors. It helps relax the blood vessels and allows more blood flow to the penis.regularly once per day, or can also be used 30-60 minutes before involving in sexual activity. It is important to remember that the medication only works when one is sexually stimulated. Please consult your doctor for the best directions for using this medicine.