Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Plaquenil and blood sugar Hydroxychloroquine and methotrexate interaction Plaquenil hydroxychloroquine is an effective medication for autoimmune conditions and malaria that comes with less side effects than other DMARDs. Prevents and treats malaria, and also treats a type of bowel infection. Plaquenil is an anti-malarial drug and contains hydroxychloroquine sulfate. It is used for treatment of malaria, auto-immune diseases like lupus and arthritis. The exact mechanism of action of Plaquenil is not known. Its action against the malarial parasites is similar to the compound chlorquine phosphate. The Related Drug Information Index provides comprehensive access to all drug information related to a specific drug Types of content include full prescribing information, drug summaries, Full Prescribing Information Continuing Medication Education Full PI CME, Medication Guides, Risk Evaluation and Mitigation Strategies REMS Summaries, REMS Continuing Medication Education REMS CME, and. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Plaquenil medication type Plaquenil Side Effects Common, Severe, Long Term -, Canada Plaquenil - Canadian Drugs for Rheumatoid Arthritis. Tamiflu and plaquenil 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 Plaquenil. Plaquenil Drug Information. Plaquenil Uses, Dosage & Side Effects -. Plaquenil generic name Hydroxychloroquine is primarily a drug used to treat or prevent malaria. It is also used to treat symptomsof rheumatoid arthritis and discoid systemic lupus erythematosus. Malaria is a disease caused by parasites that enter the body. 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. Hydroxychloroquine is used to treat malaria. It is also used to prevent malaria infection in areas or regions where it is known that other medicines eg, chloroquine may not work. Hydroxychloroquine belongs to a group of medicines known as antimalarials. It works by preventing or treating malaria.