Prescription drugs like Filitra are widely used to treat impotence and erectile dysfunction in men. Since this medication is prescribed, you need to consult your doctor before taking it. The best course of action is still to get a prescription from your doctor, even though it can be bought online and at local pharmacies. If you want to buy Filitra online, you still need to share the prescription. This drug belongs to the class of pharmaceuticals called inhibitors of phosphodiesterase type 5 (PDE 5).