Study of Serum Testosterone and Nestorone in Females After Secondary Exposure to Nestorone ® (NES) + Testosterone (T) Combined Gel Applied to Shoulders and Upper Arms in Males

The combined gel is a transdermal treatment that will be applied as three single applications to a male subject's arms and shoulders on three different treatment days. The formulation will be a hydro alcoholic gel containing about 1.43% T (14.3 mg T/g gel). About 9 to 14% of the steroid (T or NES) in the gel applied is available to the body. The amount of gel to be applied each application will be approximately 5 mL in volume. The gel application volume will contain 62.5 mg of T that will deliver approximately 6 mg T to the body per day (Swerdloff et al., 2000; Wang et al., 2000). This gel volume will also contain 8.3 mg of NES that will deliver about 0.8 mg of NES to the body per day (NES 8 mg/d + T 60 mg/d (NES8/T60) gel).