Always inform your doctor about all medications you’re taking, including over-the-counter drugs, herbal supplements, and vitamins. This helps prevent potentially harmful drug interactions.
Sun Sensitivity
Doxycycline increases your sensitivity to sunlight. Avoid prolonged sun exposure and use sunscreen with an SPF of 30 or higher. Wear protective clothing when outdoors.
Gastrointestinal Issues
Doxycycline can cause nausea, vomiting, or diarrhea. Take it with food or milk to minimize stomach upset. Severe or persistent diarrhea may indicate a serious condition; contact your doctor immediately.
Medication Interactions
- Antacids: Avoid taking doxycycline with antacids containing calcium, magnesium, aluminum, or iron. These can reduce doxycycline absorption. Birth control pills: Doxycycline can reduce the effectiveness of oral contraceptives. Consider using a backup method of contraception. Warfarin: Doxycycline may increase the effect of warfarin (a blood thinner). Your doctor should monitor your blood clotting time if you’re taking both medications.
Other Potential Side Effects
- Yeast infections Vaginal infections Photosensitivity Headache Dizziness
If you experience any unusual symptoms while taking doxycycline, contact your doctor promptly.
Contraindications
Pregnancy: Doxycycline should not be taken during pregnancy, as it may harm the developing fetus. Breastfeeding: Doxycycline passes into breast milk, and its use during breastfeeding is generally discouraged. Children under 8 years old: Doxycycline is not usually recommended for children under 8 due to the risk of tooth discoloration. Known allergy to tetracyclines: Individuals with a known allergy to tetracycline antibiotics should avoid doxycycline.
Before Starting Treatment
Discuss your medical history with your doctor, including any existing conditions like kidney or liver disease. This helps ensure the safe and effective use of doxycycline.
Additional Advice
Always follow your doctor’s instructions carefully regarding dosage and duration of treatment. Do not stop taking doxycycline prematurely, even if you feel better. Complete the full course of treatment to ensure the best results.


