is doxycycline used in replacement of atovaquone proguanil
Five medications are commonly used by physicians licensed in United States to prevent malaria: mefloquine, doxycycline, atovaquone/proguanil, chloroquine, and under special circumstances, primaquine. 1 Mefloquine, chloroquine, and doxycycline work only on the erythrocytic stage of malaria.