Doxycycline should not be used in children under the age of 8. Permanent discoloration and altered development of teeth has been reported in children younger than 8 years old who have used tetracyclines, such as doxycycline.
Off-Label Doxycycline Uses
On occasion, your healthcare provider may recommend doxycycline for treating something other than the conditions listed in this article. This is called an "off-label" use. Doxycycline's off-label uses may include treatment of infections that are resistant to another antibiotic known as vancomycin.