lyme disease
"Doxycycline has a quality of being well tolerated when administered with tinidazole which is the medicine that kills the cyst form when taken 1.5g per day throughout 15 days. After 500mg of doxycycline and 1.5g of tinidazole taken simultaneously (the former medicine throughout 30 days and the latter throughout 15 days), and the same action repeated after 10 days (but 600mg of doxycycline and 2g of tinidazole), the ratio of absolute recovery amounts to 85%."