Can you use tampons when being treated for gonorrhea?

No, it's not recommended to use tampons when you're being treated for gonorrhea.

Gonorrhea likes warm moist environments for a start so tampons are going to encourage growth at a time when you're trying to get rid of the infection. If you're on antibiotics then these kill all healthy bacteria in the vagina so leave you at higher risk of vaginal infections like yeast infections - tampons increase your risk of developing infections, and can be uncomfortable to use during yeast infections.