Doxycycline for STI Prevention: Highly Effective, Minimal Drug Resistance
A sexual health strategy called Doxy-PEP, which involves taking doxycycline after condomless sex, is highly effective in reducing bacterial STIs but is still associated with a limited rise in resistant strains of bacteria.
![A scanning electron microscopic image of a cluster of sprial-shaped Treponema pallidum bacteria, which cause syphilis.](/sites/default/files/styles/news_card__image/public/2023-03/syphilis-SEM-image.jpg)