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. Sulfasalazine and hydroxychloroquine side effects Act chloroquine Can plaquenil cause high blood pressure Hydroxychloroquine eye exam frequency Plaquenil hydroxychloroquine belongs to a group of medicines called quinolines. Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes. Oct 16, 2014 Hydroxychloroquine is often prescribed as long-term therapy for many dermatologic indications, and it may have broader benefits e.g. preventing or improving thrombophilia associated with lupus erythematosus, neonatal lupus erythematosus, diabetes in rheumatoid arthritis and other connective tissue diseases, and as adjunctive therapy in some cancers. 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 200 mg long term Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses, Plaquenil, Plaquenil Sulfate, Quineprox hydroxychloroquine. Hydroxychloroquine cancer treatment Hydroxychloroquine oral tablet is used for short-term treatment of malaria, but it may be used for long-term treatment of lupus or rheumatoid arthritis. Hydroxychloroquine Side Effects, Dosage, Uses, and More. How Safe Is Long-Term Hydroxychloroquine?. Plaquenil Side Effects Common, Severe, Long Term -. According to the American College of Rheumatology, hydroxychloroquine Plaquenil, is a “disease-modifying anti-rheumatic drug DMARD,” meaning that it helps reduce the pain and swelling that come with arthritis. It can also reduce the incidence of joint damage. Aug 14, 2017 Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. 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. May 24, 2017 I've been on 200 mg plaquenil twice daily for 13 years with no issues. As long as you get plaquenil toxicity testing specific vision tests every 6 months, you should be fine. The six month interval would catch the rare person with visual side effects before it got bad.