Age

18–any

Sex

ALL

Healthy volunteers

Not accepted

Pregnancy or lactation
Age \<18 years
Known allergy to tetracyclines
Significant hepatic or renal dysfunction (Alanine Aminotransferase (ALT)/Aspartate Aminotransferase (AST) \>3× Upper Limit of Normal (ULN), Creatinine Clearance (CrCl \<30 mL/min)
History of photosensitivity or photodermatosis
Concurrent isotretinoin or retinoid therapy
Current use of anticoagulants or immunosuppressants
Active GI ulceration or esophageal disease
Any condition likely to impair adherence or drug absorption (e.g., malabsorption syndromes)

Doxycycline Use in Post-Operative Seromas