How should doxycycline be taken after a tick bite? - briefly
Administer a single oral dose of 200 mg doxycycline as soon as possible, ideally within 72 hours of the bite, with a full glass of water and remaining upright for at least 30 minutes. If a full therapeutic course is indicated, take 100 mg orally twice daily for 10–14 days.
How should doxycycline be taken after a tick bite? - in detail
Doxycycline should be started as soon as possible after a suspected tick bite, ideally within 72 hours of the encounter. The standard adult regimen for the prevention of Lyme disease is 100 mg taken orally twice daily for 21 days. For children weighing at least 45 kg, the same dose applies; younger children receive 4 mg/kg per dose, not exceeding the adult amount.
Administration guidelines
- Swallow tablets whole with a full glass of water; do not crush or chew.
- Take doses at least 12 hours apart to maintain steady blood levels.
- If gastrointestinal upset occurs, ingest the medication with food, but avoid dairy products and calcium‑rich supplements within two hours of dosing, as they reduce absorption.
- Complete the full 21‑day course even if symptoms improve before the end of treatment.
Special considerations
- Pregnant or lactating individuals should avoid doxycycline; alternative agents such as amoxicillin are recommended.
- Patients with severe liver or kidney impairment require dose adjustment and close monitoring.
- Concurrent use of anticoagulants (e.g., warfarin) may increase bleeding risk; monitor coagulation parameters regularly.
- Photosensitivity is a known side effect; use sunscreen and protective clothing during outdoor exposure.
Adverse‑effect management
- Mild nausea or diarrhea can be mitigated with probiotics or anti‑diarrheal agents, provided they do not contain calcium.
- Severe allergic reactions (rash, swelling, difficulty breathing) demand immediate medical attention and discontinuation of the drug.
Follow‑up