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Guidelines
Pathogens
Antimicrobials
Low
Excellent
No dosage adjustment required
100mg PO BID
Skin and soft tissue infection (due to MRSA)
Community acquired pneumonia
Malaria prophylaxis
Zoonoses
GI upset and erosive esophagitis
Photosensitivity rash
Teeth staining
Divalent cations - decreased absorption
Increased digoxin levels
Increased INR with warfarin
Some anticonvulsants can decrease doxycycline levels
Antimicrobial class: Tetracycline
Pregnancy category: D
Average serum half life: 18 hours
Urine penetration: Poor
Lung penetration: Therapeutic
CSF penetration: Poor
Biliary penetration: Therapeutic