Ulipristal acetate and its role in emergency contraception: a comment.

The use of selective progesterone modulators (SRMs) has been investigated extensively over the last few years. Ulipristal acetate (UPA) is an selective progesterone receptor modulator (SPRM) which has been in use since 2010 as an effective alternative emergency contraception (EC) regimen to Levonorgestrel (LNG). It acts by inhibiting ovulation and delaying implantation. Its effectiveness is active up to 120 h after sexual intercourse. UPA is safe and has a good tolerability profile. Health care practitioners should inform women of all reproductive ages that UPA is an effective alternative agent for those who are dissatisfied with other means of EC, and its activity of up to 120 h after sexual intercourse should also be highlighted.