đź’Š After sex: Doxycycline is taken within 24 hours.
🧬 Protects against: Syphilis and chlamydia - but not HIV, gonorrhoea, herpes, genital warts or mpox.Â
⚠️ Risks: Stomach complaints, sensitivity to sunlight, risk of resistance.
🏥 Only on prescription: Medical advice is mandatory - no self-experimentation!
What is Doxy-PEP?
Doxy-PEP is a new strategy in STI prevention:
The antibiotic doxycycline is taken after sex to reduce the risk of certain bacterial sexually transmitted diseases - especially syphilis and chlamydia.
👉 Important:
Doxy-PEP is not an all-purpose solution and does not replace proven safer sex strategies.
Who is Doxy-PEP suitable for?
Doxy-PEP can be helpful for people who
- have frequently changing sex partners and are part of scenes in which bacterial STIs occur more frequently or regularly receive STI diagnoses despite safer sex strategies.
Important:
For people at low risk, Doxy-PEP not useful, as the side effects and the risk of antibiotic resistance outweigh the benefits.
Always speak to a doctor before using Doxy-PEP.
Intake & dosage
The standard dosage is 200 mg doxycycline within 24 hours of having sex.
Take with plenty of water and not on an empty stomach to avoid stomach irritation.
Important: Only after an actual risk contact, not routinely or „for safety reasons“.
Effectiveness & limits
Important: Doxycycline does not protect against 100 % and not against all infections.
Studies show that Doxy-PEP reduces the risk of Syphilis and chlamydia can be significantly reduced.
Against Gonorrhoea Does Doxy-PEP work in Europe not. The pathogens are already „resistant“ (insensitive) to the medication. It is not effective against other sexually transmitted diseases anyway.
Risks & side effects
As with all antibiotics, side effects can occur:
- Gastrointestinal complaints: Nausea, diarrhoea or abdominal pain
- Sensitivity to sunlight: Skin reacts more strongly to UV light → Sun protection necessary
- Development of resistance: Bacteria can become insensitive if doxycycline is taken too often
Therefore: Doxy-PEP only under medical supervision and Not regularly use.
FAQ: Frequently asked questions about Doxy-PEP
Doxy-PEP means taking the antibiotic doxycycline after sex to prevent bacterial STIs such as syphilis or chlamydia. It is taken after a risky contact, not regularly.
Doxy-PEP is available in Germany Not officially authorised, but can be treated by doctors off-label be prescribed. Talk to an HIV centre or AIDS service organisation about the possibilities.
The standard dose is 200 mg within 24 hours after sex. Take the tablet with plenty of water.
Stomach problems, nausea or skin reactions to the sun are common. In rare cases, doxycycline can affect the intestinal flora. Medical supervision helps to avoid side effects.
As rarely as possible! Regular use can promote resistance. Doxy-PEP should remain an exception.
Further links
- Intake & Prep-Checks
- Safer sex accident / PEP
- Protection through therapy
- Prep
- Protection through Doxy-PEP/PrEP
- Condoms
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