Does the IUD protect against STIs?

No, the IUD does not protect against sexually transmitted infections (STIs). The best way to prevent STIs if you’re having sex is using a condom or the internal condom. Dental dams, gloves, some vaccines (HPV and hepatitis B vaccines) and daily medications, such as PrEP for the prevention of HIV, also offer STI protection. If you’re concerned about both pregnancy and STIs, you can these options for STI prevention at the same time as the IUD.