?????? ?? ???? ??? ?? ???? ???????? ????????????? ???????? ??.(?? ??) ?? ??? ??? ???? ?? ??.Acetildenafil and various synthetic structural analogs of sildenafil which happen to be PDE5 inhibitors have already been identified as adulterants in a variety of "herbal" aphrodisiac goods offered about-the-counter.[40] These analogs have not been through