• The adult dosage is 100 mg once a day ie 2 x 50mg tablets.
• Take the first dose of doxycycline 1 or 2 days before arrival in the malaria-risk area.
• Take doxycycline once a day, at the same time each day, while in the malaria-risk area.
• Take doxycycline once a day for 4 weeks after leaving the malaria-risk area.

Doxycycline side effects and warnings

• Taking doxycycline may cause travellers to sunburn faster than normal. To prevent sunburn, avoid midday sun, wear a high-SPF sunblock, wear long-sleeved shirts, long trousers, and a hat.
• Take doxycycline on a full stomach to lessen nausea; do not lie down for 1 hour after taking the drug to prevent heartburn.
• Women who use doxycycline may develop a vaginal thrush infection. Take an over-the-counter anti-thrush medication (such as canesten) with you on your trip for use if vaginal itching or discharge develops.
• Doxycycline may interfere with the contraceptive pill. Do not rely on your pill alone for the first 3 weeks. ie use condoms as well.

• children under the age of 8; teeth may become permanently stained.
• Do NOT take doxycycline if you are pregnant.