You want to be sure because mefloquine has possible side effects.
你得搞清楚 因为甲氟喹有副作用。
英语百科
Mefloquine
Mefloquine, sold under the brand names Lariam among others, is a medication used to prevent or treat malaria. When used for prevention it is taken once a week and should be begun one or two weeks before potential exposure and continued for four weeks after potential exposure. It can be used to treat mild or moderate malaria but should not be used to treat severe malaria. It is taken by mouth.