It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. Does plaquenil prevent malaria Risk of plaquenil toxicity Chloroquine phosphate reef2reef Find patient medical information for Plaquenil Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Plaquenil received an overall rating of 5 out of 10 stars from 4 reviews. See what others have said about Plaquenil, including the effectiveness, ease of use and side effects. Plaquenil Reviews. Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. Hydroxychloroquine comes as a tablet to take by mouth. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. Information on plaquenil PLAQUENIL®, Plaquenil Reviews Everyday Health Recommended eye for sjogrens plaquenil PLAQUENIL This medicine is a white, dog-bone, film-coated, tablet imprinted with "PLAQUENIL". Plaquenil Oral Uses, Side Effects, Interactions.. Hydroxychloroquine Plaquenil. Plaquenil Hydroxychloroquine Side effects, Images, Uses.. Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. PLAQUENIL hydroxychloroquine sulfate tablets contain 200 mg hydroxychloroquine sulfate, equivalent to 155 mg administration. Inactive Ingredients Dibasic calcium phosphate USP, hypromellose USP. Plaquenil is the devil! Worked well 1st 2 mts. After that I had issues with my vision, felt waves of nervousness, and extreme anxiety where I started to question my sanity. Hallucinated, broke out in rashes and crying spells.