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. Hydroxychloroquine skin rash treatment Can hydroxychloroquine interfere with the immune system Chloroquine (aralen) price Plaquenil and alcohol interaction While side effects of corticosteroids are usually to blame, there is also the possibility of ocular damage associated with long-term use of the antimalarial drugs hydroxychloroquine brand name Plaquenil® and chloroquine. Improved vision screening tests and updated dosing guidelines are key to avoiding such complications. It may take a few weeks or months for Cytoxan to improve your lupus symptoms. The side effects of Cytoxan range from mild to severe and may be worse when the medication is taken in tablet form. Side effects include nausea and vomiting, which can sometimes be prevented with an anti-nausea medication such as ondansetron Zofran. This means that the side effects of Plaquenil are mild and infrequent compared with its potential benefits. As with any medication, allergic reactions including skin rashes and non-allergic reactions can occur. The side effect that is of greatest concern is retinal toxicity. 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. Lupus medication plaquenil side effects Plaquenil Side Effects on Your Eyes and Vision, Treating Lupus with Immunosuppressive Medications Johns. Plaquenil for seronegative arthritisPlaquenil injectionsDoes hydroxychloroquine cause human birth defectsHydroxychloroquine blurred vision due toHydroxychloroquine in lupus pregnancy Our Plaquenil hydroxychloroquine Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. The Risk of Retinal Toxicity with Plaquenil. Plaquenil Hydroxychloroquine MyLupusTeam. Plaquenil is the brand name of hydroxychloroquine, a drug used to prevent or treat malaria. Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. Other medications and supplements may interfere with your lupus medication or cause you to experience side effects. Depending on the medications you are taking to treat your lupus, you may need to undergo routine tests such as eye tests or blood tests to ensure that your medications aren’t causing any side effects. Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more.