DoxyPEP: The Morning-After Pill for Certain STIs

DoxyPEP has become one of the hottest topics in queer sexual health — and for once, I mean "hot" in a way that does not involve a rash.

DoxyPEP means taking 200 milligrams of doxycycline within 72 hours after oral, anal, or vaginal sex. In a major clinical trial involving gay and bisexual men and transgender women who were taking HIV PrEP or living with HIV, the people offered DoxyPEP developed substantially fewer bacterial sexually transmitted infections than people receiving standard care alone. The strongest protection was seen against chlamydia and syphilis, with additional protection against gonorrhea.

The CDC now recommends that clinicians offer doxy-PEP, through shared decision-making, to gay, bisexual, and other men who have sex with men and transgender women who have been diagnosed with syphilis, chlamydia, or gonorrhea in the past 12 months. Across the large trials behind that guidance, doxycycline taken within 72 hours of sex reduced syphilis and chlamydia infections by more than 70% and gonorrhea by roughly 50%.

It is a prescription — not something to borrow from a friend's medicine cabinet — and it should be paired with regular STI screening.

As a nurse and a sex-positive slut, I love prevention tools that acknowledge a basic truth: people are going to have sex. Shame has never cured an STI.

DoxyPEP is not a magic shield, and antibiotic resistance remains a real concern. That is exactly why it belongs in a conversation with a knowledgeable clinician. We can celebrate an effective option without pretending that every medication is right for every body.