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 sulfate dosage Does plaquenil cause itching Chloroquine overdose symptoms Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as. 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. Hydroxychloroquine Hydroxychloroquine is an antimalarial drug which is relatively safe used for the treatment of rheumatoid arthritis. Chloroquine is a similar antimalarial drug that may also be. 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 is hydroxy chloroquine Hydroxychloroquine MedlinePlus Drug Information, HYDROXYCHLOROQUINE - ORAL Plaquenil side effects, medical. Hydroxychloroquine dose based upon weight and renal function Hydroxychloroquine is usually taken with food or milk to prevent stomach upset. The dosage and length of treatment are based on your medical condition and response to therapy. In children, dosage. Hydroxychloroquine Oral Uses, Side Effects, Interactions.. What is hydroxychloroquine - Answers. Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects.. 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. Medical definition of hydroxychloroquine a drug derived from quinoline that is administered orally in the form of its sulfate C18H26ClN3OH2SO4 to treat malaria, rheumatoid arthritis, and lupus erythematosus. Hydroxychloroquine belongs to the family of medicines called antiprotozoals. Protozoa are tiny, one-celled animals. Some are parasites that can cause many different kinds of infections in the body. This medicine is used to prevent and to treat malaria and to treat some conditions such as liver disease caused by protozoa.