It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Chloroquine hydrochloride formulation Chloroquine schizont p falciparum Trametinib hydroxychloroquine 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. What is the dosage for Hydroxychloroquine? Hydroxychloroquine is a quinoline medicine used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. It is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Mar 17, 2019 Hydroxychloroquine is a quinoline medicine 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. This medicine is not effective against all strains of malaria. Today, it is used to treat rheumatoid arthritis, some symptoms of lupus, childhood arthritis (or juvenile idiopathic arthritis) and other autoimmune diseases. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. What is hydroxychloroquine for Hydroxychloroquine Plaquenil, What is Hydroxychloroquine? - HTQ How does hydroxychloroquine work in slePlaquenil zonChloroquine inhibit the novel heme polymerase enzyme Hydroxychloroquine is an antimalarial drug used to prevent and treat malaria. Hydroxychloroquine Plaquenil is also a disease-modifying anti-rheumatic drug DMARD used to treat both acute and chronic rheumatoid arthritis, systemic lupus erythematosus, and discoid lupus erythematosus. Hydroxychloroquine Plaquenil Success, Reviews and Side Effects. Hydroxychloroquine Uses, Dosage & Side Effects -. RA and Hydroxychloroquine How Effective is it for Rheumatoid.. Consumer information about the medication HYDROXYCHLOROQUINE - ORAL Plaquenil, includes side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug HYDROXYCHLOROQUINE - ORAL. Medical Definition of hydroxychloroquine. a drug derived from quinoline that is administered orally in the form of its sulfate C 18H 26ClN 3OH 2SO 4 to treat malaria, rheumatoid arthritis, and lupus erythematosus — see plaquenil. Plaquenil hydroxychloroquine is an antimalarial medication used to treat or prevent malaria, a disease caused by parasites, which enter the body through the bite of a mosquito. Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus.