Noun
an antimalarial drug (trade name Larium and Mephaquine) that is effective in cases that do not respond to chloroquine; said to produce harmful neuropsychiatric effects on some people
Source: WordNetMSF also introduced a switching of first-line treatment to a combination therapy (Artesunate and Mefloquine) to combat resistance and fatality of old drugs that were used to treat the disease traditionally. Source: Internet