In pharmacies, you can buy over-the-counter drugs based on sildenafil. Recently, a drug based on another substance with a similar effect - with tadalafil - has also been available without a prescription. An alternative are dietary supplements for erection problems (e.g. with L-arginine, ginseng extract). Lidocaine spray is also available without a prescription, which, when used during intercourse, prevents premature ejaculation. Before using drugs for erectile dysfunction, it is worth consulting a urologist who will help find the cause of the problems.