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Guidelines
Pathogens
Antimicrobials
Low
Excellent
~$0.10/day
100mg PO BID
Skin and soft tissue infection
Community acquired pneumonia
Malaria prophylaxis
Zoonoses
Methicillin resistant staphylococcus aureus infections
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
Good option for atypical pneumonia coverage if QT prolongation is a concern.
Antimicrobial class: Tetracycline
Pregnancy category: D
Average serum half life: 18 hours
Biliary penetration: Therapeutic
CSF penetration: Poor
Lung penetration: Therapeutic
Urine penetration: Therapeutic