San Francisco, Calif. and Torrance, Calif. (June 20, 2002) – A Phase 3 study conducted at multiple research centers in the U.S. under the direction of Ronald Swerdloff, MD, Principal Investigator at ...

A progestin/testosterone gel for contraceptive use by men is effective by 8 weeks of daily use. Men and women reported favorable experiences using the gel as their only contraceptive method. BOSTON — ...