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. Malaria is spread by mosquitoes, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Intravenous chloroquine injection What does quinine and chloroquine treat Arthralgia is more common among patients with IBD, occurring in 40-50% of patients, which is a rate similar to that of the general population; arthritis occurs in approximately 15—20% of Crohn's disease CD patients and approximately 10% of ulcerative colitis UC patients at some stage during their disease course. Hydroxychloroquine for Crohns Disease and Ulcerative Colitis. Leonard B. Weinstock, M. D. Many anti-inflammatory medications used for rheumatoid arthritis have been applied to inflammatory bowel disease IBD therapy. I had problems with generic plaquenil giving me some diarrhea so I got the name brand. To hear this scares me b/c I just had to have surgery for colitis back in Nov. and my rheumy didn't think this drug would be a problem for me. I couldn't take it when I had the colitis because it made it a lot worse! For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Plaquenil for ulcerative colitis Plaquenil Hydroxychloroquine - Side Effects, Dosage, Interactions - Drugs, Hydroxychloroquine for Crohns Disease and Ulcerative Colitis. Hydroxychloroquine plaquenil adverse effectsPlaquenil antimalarial drug 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.. Drug induced colitis from plaquenil?. Ulcerative Colitis Diet Plan Best and Worst Foods. Ulcerative colitis is a chronic condition. The goal of treatment is to reduce the inflammation that causes your symptoms so you can prevent flare-ups and have longer periods of remission. Medication The doctor will review symptoms and medical history and perform a physical exam. Two procedures are performed endoscopy for Crohn’s disease or colonoscopy for ulcerative colitis. The New Zealand Dermatological Society recommends that to decrease the risk of retina damage, no more than 200mg of Plaquenil should be taken a day, and a dose of 400mg per day should be taken no longer than a few weeks. This means many people taking Plaquenil for RA are taking a dose of 400mg a day or higher.