A total number of 1400 soldiers were subjected to prophylactic regimes with either doxycycline 100 mg/day (n=986) or mefloquine 250 mg/week (n=414). Prophylaxis lasted about 12 weeks. The side effects and compliances were investigated by questionnaires. All soldiers were monitored up to 6 months after returning home.
No malaria case was observed and there was no severe side effect in either group. The total side effects in doxycycline group were significantly higher (P<0.001). The compliance of mefloquine takers was better than the doxycycline takers (P<0.05).
The tolerability of the mefloquine regime is better than the doxycycline regime in malaria prophylaxis.