Efficiency and side effects of intracavernous injections of moxisylyte in impotent patients: a dose-finding study versus placebo.
We assessed the efficiency and tolerance of the alpha-blocking agent moxisylyte in 2 double-blind studies versus placebo performed in 12 neurogenic patients with spinal cord lesions and in 61 patients presenting with either psychogenic impotence (30) or erectile dysfunction that was predominantly neither psychogenic, hormonal nor neurogenic (31). In each etiological group patients were randomized (according to latin square method) to receive 3 single doses (10, 20 and 30 mg.) of moxisylyte and a placebo. The erectile response was determined 5, 10, 15, 20 and 30 minutes after each injection. Whatever etiology of impotence and dosage tested, the erectile response induced by moxisylyte was significantly higher than the placebo-induced response. No difference occurred among the 3 doses. In 93% of the patients moxisylyte induced an erectile response, including tumescence in 6, partial rigidity in 16 and complete rigidity in 46. Thus, in 62 of 73 patients (85%) the drug allowed initiation of erection adequate for intercourse. Placebo induced such erection in only 25% of the cases and in 55% there was no response. Tolerance was good and no priapism occurred. Only 4 patients (5%) reported mild pain during injection but erections were never painful, 1 presented with moderate and transient hypotension at the 20 mg. dose and a painless prolonged erection was observed in 1 case after the lowest dose. Drugs such as moxisylyte should be given before less well tolerated drugs.[1]References
- Efficiency and side effects of intracavernous injections of moxisylyte in impotent patients: a dose-finding study versus placebo. Costa, P., Sarrazin, B., Bressolle, F., Colson, M.H., Bondil, P., Saudubray, F. J. Urol. (1993) [Pubmed]
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