Mefloquine is used to treat malaria (a serious infection that is spread by mosquitoes in certain parts of the world and can cause death) and to prevent malaria in travelers who visit areas where malaria is common. Mefloquine is in a class of medications called antimalarials. It works by killing the organisms that cause malaria.
Mefloquine comes as a tablet to take by mouth. If you are taking mefloquine to prevent malaria, you will probably take it once a week (on the same day each week). You will begin treatment 1 to 3 weeks before you travel to an area where malaria is common and should continue treatment for 4 weeks after you return from the area. If you are taking mefloquine to treat malaria, your doctor will tell you exactly how often you should take it. Always take mefloquine with food (preferably your main meal) and at least 8 ounces (240 milliliters) of water. Children may take smaller but more frequent doses of mefloquine. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take mefloquine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
The tablets may be swallowed whole or crushed and mixed with a liquid such as water, milk, or sugar water.
If you are taking mefloquine to treat malaria, you may vomit soon after you take the medication. If you vomit less than 30 minutes after you take mefloquine, you should take another full dose of mefloquine. If you vomit 30 to 60 minutes after you take mefloquine, you should take another half dose of mefloquine. If you vomit again after taking the extra dose, call your doctor.
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
- Lariam®
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