Viagra is very expensive and harmful to the heart

When the problem of reducing potency affected me personally, I was shocked that this happened to me. The erection became lethargic, fell right during the process of "this", plus began to quickly finish. First I went to the hospital, prescribed medications that did not help, then I began to try various folk remedies, all to no avail, and the preparations from TV commercials were especially useless. Viagra is very expensive and harmful to the heart, so the option with it also disappeared. Recommend a drug that I can take safely and not be afraid of side effects.