BACKGROUND: Combined testosterone and progestogen preparations are a promising
approach to male hormonal contraception. We investigated the effect of sc etonogestrel with …

Context: Previous male contraceptive studies showed that progestins enhance
spermatogenesis suppression by androgens in men. Objective: We compared the efficacy of …

In addition to their use as replacement therapy for hypogonadal males, androgens,
particularly testosterone (T), are being explored as potential hormonal male contraceptive …

As there are limitations to current methods of male contraception, research has been
undertaken to develop hormonal contraceptives for men, analogous to the methods for …

Objective To analyze how frequently and why men presenting with infertility take
testosterone (T) and if negative effects of T on semen parameters are reversed following …

The coadministration of a progestogen with testosterone increases the degree of
suppression of spermatogenesis and is one approach to the development of hormonal male …

BACKGROUND: The combination of etonogestrel implants with injectable testosterone
decanoate was investigated as a potential male contraceptive. METHODS: One hundred …

Objective To compare the sperm suppression in Indonesian men achieved by combination
treatment with either T enanthate or 19-nortestosterone-hexyloxy-phenyl-propionate (19 …

Recent studies demonstrate that combinations of androgens and progestagens are highly
effective in the suppression of spermatogenesis in normal volunteers. To test whether …

OBJECTIVE Approaches to hormonal male contraception are based on injectable
testosterone esters alone or in combination with gestagens or GnRH analogs but the short …