Doxycycline is not appropriate for everyone; flag pregnancy, prior severe reaction, or porphyria so the clinician can weigh alternatives.
D
Steps
schema.org/HowTo
01
Tell the clinician if you have ever had a severe reaction to doxycycline or another tetracycline.
02
Disclose pregnancy or breastfeeding; doxycycline is generally avoided in pregnancy.
03
Mention porphyria, severe liver disease, or use of oral retinoids (isotretinoin).
04
Note current medications: doxycycline interacts with antacids, iron, and some seizure drugs.
05
If doxycycline is unsuitable for prophylaxis, IDSA does not endorse a routine alternative single-dose regimen; observation plus prompt treatment if symptoms appear is standard.