Cobra 120 tablete pokazuju odli?no djelovanje pa vam alkohol kao „poja?iva?“ samopouzdanja sigurno ne?e biti potreban.In vitro studies have shown that sildenafil is selective for phosphodiesterase-5 (PDE5) . Its effect is more potent on PDE5 than on other known phosphodiesterases . In particular, there is a 10-times selectivity over PDE6 which