Do not take this medicine with any of the following medications:

-abarelix
-amiloride
-amoxapine
-apomorphine
-arsenic trioxide
-certain antifungal medicines like itraconazole or ketoconazole
-certain quinolone antibiotics
-cisapride
-droperidol
-haloperidol
-hawthorn
-levomethadyl
-maprotiline
-medicines for malaria like chloroquine and halofantrine
-medicines for mental depression such as tricyclic antidepressants
-mefloquine
-methadone
-other medicines to control heart rhythm
-pentamidine
-phenothiazines like chlorpromazine, mesoridazine, thioridazine
-pimozide
-ranolazine
-sertindole
-vardenafil
-voriconazole

This medicine may also interact with the following medications:

-acetazolamide
-antacids
-barbiturates, like phenobarbital
-cimetidine
-diuretics
-medicines for high blood pressure or angina
-medicines for surgery that relax muscles or block pain
-methazolamide
-phenytoin
-prescription pain medicines like codeine and hydrocodone
-rifampin
-sodium bicarbonate
-warfarin
-ziprasidone

They need to know if you have any of these conditions:
-heart disease or previous heart attack
-kidney disease
-liver disease
-low blood pressure
-lung or breathing disease, like asthma
-myasthenia gravis
-you have a pacemaker
-an unusual or allergic reaction to quinidine, quinine, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Visit your doctor or health care professional for regular checks on your progress. Wear a medical ID bracelet or chain, and carry a card that describes your disease and details of your medicine and dosage times.

Check your blood pressure and pulse rate regularly. Ask your health care professional what your blood pressure and pulse rate should be, and when you should contact him or her. Your doctor or health care professional also may schedule regular blood tests and electrocardiograms to check your progress.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Protect from light and moisture. Keep container tightly closed. Throw away any unused medicine after the expiration date.