Doxycycline

Antibiotic (Tetracycline)

Dosing & Administration

Adult Dose

100 mg PO/IV BID.

Pediatric Dose

2.2 mg/kg PO/IV BID (avoid if < 8 yrs unless treating RMSF/Anthrax).

Renal Adjustment

No adjustment necessary (unlike other tetracyclines).

Hepatic Adjustment

Use caution in severe impairment.

Safety & Special Populations

Pregnancy Category

D - Avoid (causes tooth discoloration/bone growth inhibition in fetus).

Lactation Safety

Use caution (short term use likely safe).

Contraindications & Adverse Effects

Contraindications

  • Pregnancy
  • Children < 8 years old (with exceptions)

Common Adverse Effects

  • Photosensitivity
  • Esophagitis / Pill ulcer
  • Tooth discoloration (in children)