Answer
It is commonly used from age 12. Use in younger children requires careful clinical justification because tetracyclines can affect developing teeth; exceptional use may be necessary for severe infections when alternatives are unsuitable.
Sources for this answer
- Doxycycline 100 mg Capsules — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.