Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Plaquenil adverse effect on retina Financial assistance for hydroxychloroquine Tussin dm and hydroxychloroquine interaction Hydroxychloroquine versus sulfasalazine Description and Brand Names. Drug information provided by IBM Micromedex US Brand Name. Plaquenil; Descriptions. Hydroxychloroquine is used to treat malaria. It is also used to prevent malaria infection in areas or regions where it is known that other medicines eg, chloroquine may not work. Taking twice a day, once in morning, once at night. Have been taking for a few years. When I discontinue taking it, the symptoms return after a week or so. Need to keep taking it all the time it seems. It doesn't seem to interact with other medicines, including thyroid medicine or blood pressure medicine. I take it with food, it seems to be ok. Medicines for the Prevention of Malaria While Traveling Hydroxychloroquine Plaquenil™ What is hydroxychloroquine? Hydroxychloroquine also known as hydroxychloroquine sulfate is an arthritis medicine. that also can be used to prevent malaria. It is available in the United States by prescription only. Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. What medicines are ok to take with hydroxychloroquine Are there any other meds that treat RA & lupus. -, Hydroxychloroquine Oral Tablet 200Mg Drug Medication Dosage. Hydroxychloroquine sulfate 200 mg oral tablet verified Although there are few drug interactions with hydroxychloroquine, to be safe be sure to tell your doctor about all of the medications you are taking, including over-the-counter drugs and natural remedies. Be sure to notify your other physicians when taking this drug. Hydroxychloroquine Plaquenil. Medicines for the Prevention of Malaria While Traveling.. Hydroxychloroquine MedlinePlus Drug Information. Hydroxychloroquine should be used with caution in patients with hepatic disease, a history of alcoholism, or in conjunction with known hepatotoxic drugs. A dosage reduction may be necessary in patients with hepatic disease and in those taking medicines known to affect the liver. Feb 19, 2020 The adult dose of Plaquenil to treat an acute attack of malaria is an initial dose of 800 mg followed by 400 mg in six to eight hours and 400 mg for two more days. To treat lupus erythematosus, the average adult dose is 400 mg once or twice daily. What Drugs, Substances, or Supplements Interact with Plaquenil? Nov 09, 2018 Take hydroxychloroquine with a meal or a glass of milk. To prevent malaria Start taking the medicine 2 weeks before entering an area where malaria is common. Continue taking the medicine.