Safety and Pharmacokinetics (PK) of a Polyurethane Tenofovir Disoproxil Fumarate (TDF) Vaginal Ring

The TDF IVR intravaginal ring is formulated using flexible outer tubing, comprised of hydrophilic, aliphatic polyether urethane, and an inner core compartment comprised of 86% w/w TDF and 14% w/w sodium chloride (NaCl). The TDF intravaginal ring will be worn continuously for 14 days. It will be inserted into the vagina following cessation of participant's menses at Visit 3 and removed at Visit 7.

The placebo ring is formulated using flexible outer tubing, comprised of hydrophilic, aliphatic polyether urethane, and an inner core comprised of sodium chloride (NaCl). The Placebo intravaginal ring will be worn continuously for 14 days. It will be inserted into the vagina following cessation of participant's menses at Visit 3 and removed at Visit 7.