Doxycycline is an antibiotic that's used to treat infections including:
- chest and dental infections
- skin infections and conditions like rosacea
- sexually transmitted infections (STIs)
- other rare infections
It can also be used to prevent malaria if you're travelling abroad.
Doxycycline is available on prescription. It comes as capsules, tablets and tablets which dissolve in water (dispersible).
Key facts
- For most infections, you'll start to feel better in a few days, but it's important to finish the course of medicine.
- Doxycycline works more slowly to treat the condition rosacea. A doctor can review it after about 4 weeks to check how well it's working.
- The most common side effects of doxycycline are headaches, feeling sick or being sick. It can also make your skin sensitive to the sun.
- It's best not to drink alcohol while taking doxycycline because it can stop it working properly.
- Doxycycline can sometimes cause thrush. If this happens, ask your doctor or pharmacist for advice.