ODOBGYNDECODED

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Doxycycline

Pregnancy & gynaecology-specific. Every dose row is source-referenced; verify against institutional protocols.

DoxycyclineTetracycline

Regimens checked: 2026-10-17. Each indication has its own preparation, limits and safety checks.

Doxycycline: indication-specific regimens
IndicationDoseRouteFrequencyDuration / preparationMaximumMonitoring / cautions
Chlamydial infection in a non-pregnant adult
100 mg
Oral
Twice daily
7 days · Take with a full glass of water while upright; stay upright for at least 1 h. Separate iron, calcium, zinc and antacids by ≥2 h
200 mg/day in this regimen
Monitor
  • Adherence, pregnancy status, partner treatment and retesting at approximately 3 months
Contraindications / cautions
  • Pregnancy: use a pregnancy-recommended regimen such as azithromycin rather than this row
Non-pregnant PID; combine with ceftriaxone and metronidazole
100 mg
Oral (IV if required in hospital)
Every 12 hours
14 days TOTAL treatment · Oral route is effective when tolerated; use a full glass of water and remain upright. Separate from polyvalent cations
200 mg/day in this PID regimen
Monitor
  • Clinical response within 72 h and oral tolerance; check pregnancy and partner management
Contraindications / cautions
  • Do not apply the non-pregnant PID regimen in pregnancy
Pregnancy safety
The STI/PID rows here are for non-pregnant patients; use pregnancy-recommended alternatives. Other severe infections require their own risk-benefit assessment.
Lactation
Short courses acceptable but alternatives preferred
CDC · 2021 STI guidelinecheckedIN REVIEW