Can doxycycline be used for tooth abscess?

Need more information- did your dentist prescribe this for your tooth? If so, it is safe and likely will be effective. If you're asking because you have a tooth abscess and happen to have leftover doxycycline lying around, that's a bad idea. The drug won't be tailored to your specific infection, and likely you won't have enough to properly deal with the infection. If this is the case, please see a dentist as soon as possible- oral abscesses are no joke! If you can't immediately see a dentist, your GP may be able to prescribe chlorhexidine gluconate oral rinse to help prevent the infection from spreading too much.