Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Chloroquine diphophate salt Patent for proguanil chloroquine malaria Can plaquenil be used to treat fibromyalgia Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is. Hydroxychloroquine HCQ, sold under the brand name Plaquenil among others, is a medication used for the prevention and treatment of certain types of malaria. Specifically it is used for chloroquine -sensitive malaria. Other uses include treatment of rheumatoid arthritis, lupus, and porphyria cutanea tarda. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Hydroxychloroquine is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Plaquenil uses arthritis Rheumatoid Arthritis Treatment Options Johns Hopkins., What Conditions does Plaquenil Treat? - WebMD Effects of plaquenil Hydroxychloroquine brand namePlaquenil is a disease-modifying anti-rheumatic drug DMARD approved for adults with RA. It is often given in combination with methotrexate and sulfasalazine a treatment known as triple therapy, to help slow RA disease progression for patients who do not get relief from methotrexate therapy alone. 1,2 Treatments for Rheumatoid Arthritis. Hydroxychloroquine - Wikipedia. What Is Hydroxychloroquine and How Does It Help Arthritis.. Plaquenil is the brand name of hydroxychloroquine, a drug used to prevent or treat malaria. Plaquenil is also used for long-term treatment of autoimmune diseases such as rheumatoid arthritis RA and systemic lupus erythmatosis. Feb 21, 2018 "Plaquenil was first used to treat malaria but was later found to also have beneficial effects in patients with inflammatory arthritis such as rheumatoid and lupus," said Dr. Steven Beldner. 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.