It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Hydroxychloroquine sulfate davis Plaquenil and mood Hydroxychloroquine sulfate plaquenil Plaquenil long term us What is Plaquenil Hydroxychloroquine? Plaquenil is most known for its original purpose treating and preventing malaria. Malaria is a disease caused by parasites that can enter the body through a mosquito bite. The essential ingredient, known as quinine, is derived from the bark of the cinchona plant. 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. It is sold under the brand name Plaquenil and it is also sold as a generic medicine. It is available in Hydroxychloroquine oral tablet is available as a brand-name drug and a generic drug. Brand name Plaquenil. Hydroxychloroquine comes only as a tablet you take by mouth. Hydroxychloroquine is used to treat malaria, lupus erythematosus, and rheumatoid arthritis. 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. How does plaquenil work Taking Plaquenil for Rheumatoid Arthritis, Medicines for the Prevention of Malaria While Traveling. Hydroxychloroquine undifferentiated connective tissue disease 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 lupus, rheumatoid arthritis, and others. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Lupus Medicines Hydroxychloroquine - Brigham and Women's.. May 07, 2019 Plaquenil hydroxychloroquine is commonly used to help keep mild lupus-related problems, such as skin and joint disease, under control. This drug is also effective at preventing lupus flares. Mar 24, 2011 I am glad I switched to the cymbalta, perhaps the combination of it and 400 mg of plaquenil will work for me. It seemed to help the swelling in my hands too. I had an uncle with RA whose been dead for years now but it was before all the better drugs came out and he was so crippled up. Does Plaquenil actually work for you? I never actually noticed a difference when I was taking Plaquenil long-term. A few years ago, when I stuck to a super healthy diet, I actually noticed a difference in my symptoms, so I stopped taking Plaquenil.