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. Hydroxychloroquine or sulfasalazine Plaquenil y alcohol Hydroxychloroquine is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Important information. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Cardiomyopathy has been rarely reported with high daily dosages of hydroxychloroquine. Dosage and Administration One tablet of 200 mg of hydroxychloroquine sulfate is equivalent to 155 mg base. Malaria Suppression— In adults, 400 mg =310 mg base on exactly the same day of each week. Identify these serious hydroxychloroquine drug interactions with the RxList drug interaction checker tool. All generic drug interactions for hydroxychloroquine lists will include brand and generic names. Drug Interaction Categories. 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. Drug category for hydroxychloroquine Hydroxychloroquine - Side Effects, Dosage, Interactions - Drugs., PLAQUENIL® - Food and Drug Administration Chloroquine dosage for malaria preventionPlaquenil for sun allergyPlaquenil and tinazidole for lyme Hydroxychloroquine was originally developed as a safer alternative to chloroquine for the treatment of malaria and was later found to have antirheumatic and anti-inflammatory uses. Currently, hydroxychloroquine is an FDA-approved drug indicated for the treatment of malaria, lupus, and rheumatoid arthritis. 7-10 Hydroxychloroquine Information for Providers AIDSinfo. Hydroxychloroquine Drug Interactions - Serious Interaction.. Hydroxychloroquine - Drugs and Lactation Database LactMed.. Hydroxychloroquine is in a class of drugs called antimalarials. It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. The recommended maintenance dose range of hydroxychloroquine Plaquenil for the treatment of rheumatoid arthritis is 200 to 400 mg daily. Lupus Erythematosus The recommended initial dosage of hydroxychloroquine Plaquenil for the treatment of lupus erythematosus is 400 mg once or twice daily. Generic Plaquenil. HYDROXYCHLOROQUINE is used to treat rheumatoid arthritis and systemic lupus erythematosus. It is also used to treat malaria. The lowest GoodRx price for the most common version of hydroxychloroquine is around $25.54, 86% off the average retail price of $196.17.