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. Chloroquine toxicity Hydroxychloroquine eyes Plaquenil 25 mg Treatment of cerebral malaria chloroquine Eye damage due to Plaquenil is not common,” he says. “Rarely will anybody who has good vision and minimal symptoms develop loss of central vision or ability to read if annual screening is done and visual are symptoms reported as soon as they occur so the medication can be stopped if toxicity occurs. Hydroxychloroquine is a DMARD. The brand name is Plaquenil. What does Plaquenil do? Plaquenil relieves pain and swelling and prevents damage to joints. How long does Plaquenil take to work? Plaquenil works very slowly. In 1 to 3 months you should start to feel better. You may continue to get better for up to 1 year. Plaquenil comes in 200 milligram mg tablets that are taken by mouth. To prevent malaria in adults, two tablets are typically taken once a week, on the same day each week. 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. Residul plaquenil in the eye Lichen planopilaris Genetic and Rare Diseases Information., Lupus Medicines Hydroxychloroquine - Brigham and Women's. Plaquenil antinflammatoryDoes plaquenil cure lupus Oct 07, 2019 Study Finds Blood Levels of Plaquenil may be Important Indicator of Eye Disease Risk New research finds that measuring blood levels of the medication hydroxychloroquine Plaquenil in people with lupus may be an effective way to predict risk of retinopathy, a disease which results in impaired or complete loss of vision. Study Finds Blood Levels of Plaquenil may be Important.. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Plaquenil Side Effects Common, Severe, Long Term -. Plaquenil Side Effects by Likelihood and Severity INFREQUENT side effects. If experienced, these tend to have a Severe expression. A Disorder Of The Retina Of The Eye; Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. eye exams. Your doctor may give you an eye exam. Plaquenil and Your Eyes In some people, Plaquenil can cause a condition called hydroxychloroquine retinopathy, often referred to as bulls-eye maculopathy. The condition sometimes resembles a target, or bulls-eye ring, on the retina surrounding the macula.