Antibiotic / Antibiotic

Doxycycline

Tetracycline-class antibiotic used in prescription contexts for susceptible infections and selected inflammatory or dermatologic indications. The profile highlights photosensitivity, esophageal irritation, mineral binding, pregnancy cautions, and stewardship.

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Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.

Reference dosePrescription dosing depends on indication, organism, age, pregnancy status, formulation, and clinician-directed duration. Verify official label and current guidance.

Half-lifeIntermediate; commonly discussed around 18 to 22 hours, but varies by patient context. hours

Risk flagmoderate

Regulatory noteReview required

Side effects and watch-outs

GI upset
Esophageal irritation
Photosensitivity
Rash
Headache
Yeast overgrowth
C. difficile-associated diarrhea risk