Do not take this medicine with any of the following medications:
-cisapride
-cholinesterase inhibitors like edrophonium, neostigmine, physostigmine, and pyridostigmine
-erythromycin, troleandomycin
-flecainide
-other antimalarial drugs like mefloquine, halofantrine
-pimozide
-quinidine
-rifampin
-some medicines for irregular heart rhythm
-some medicines used during surgery

This medicine may also interact with the following medications:
-acetazolamide
-antacids
-atorvastatin
-cimetidine
-desipramine
-digoxin
-heparin
-ketoconazole
-lovastatin
-simvastatin
-sodium bicarbonate
-some antibiotics
-some medicines to treat seizures
-tonic water that contains quinine
-warfarin

They need to know if you have any of these conditions:
-diabetes
-glucose 6-phosphate dehydrogenase (G6PD) deficiency
-heart problems, irregular heartbeats
-kidney disease
-liver disease
-muscle weakness or disease
-vision or hearing problems
-an unusual or allergic reaction to quinine, quinidine, mefloquine, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Visit your doctor or health care professional for regular check ups. Let your doctor know if your symptoms do not improve or if you feel worse. Contact your doctor right away if your fevers come back after you finish this medicine.

Some people may have low blood sugar while taking this medicine. Low blood sugar can make you feel lightheaded, dizzy, sweaty, confused, shaky, anxious, or weak. If you feel this way drink some fruit juice or have a snack then call your doctor. If you are diabetic, check your blood sugar as directed.

Avoid antacids with aluminum or magnesium for 2 hours before and after taking a dose of this medicine.

Tell your health care provider that you are taking this medicine before you have any surgery, procedure, or dental work.

Keep out of the reach of children.

Store at room temperature between 25 and 30 degrees C (77 and 86 degrees F). Keep in a tightly closed container. Throw away any unused medicine after the expiration date.