Levonorgestrel implants (Norplant II) for male contraception clinical trials: combination with transdermal and injectable testosterone.

@article{Gonzalo2002LevonorgestrelI,
  title={Levonorgestrel implants (Norplant II) for male contraception clinical trials: combination with transdermal and injectable testosterone.},
  author={Irene T Gaw Gonzalo and Ronald S. Swerdloff and Anita L. Nelson and Brad Clevenger and Riberto Garcia and Nancy Berman and Christina Wang},
  journal={The Journal of clinical endocrinology and metabolism},
  year={2002},
  volume={87 8},
  pages={3562-72}
}
Recent studies demonstrate that combinations of androgens and progestagens are highly effective in the suppression of spermatogenesis in normal volunteers. To test whether progestagen and androgen delivery systems designed to produce steady serum levels will be as effective as other androgen plus progestagen combinations, we compared Norplant II and testosterone (T) transdermal patch to T patch alone on the suppression of spermatogenesis in normal men. Thirty-nine healthy male volunteers (age… CONTINUE READING