One such commonly used medication for dermatologic and rheumatologic inflammatory conditions is hydroxychloroquine (Plaquenil), a chloroquine derivative. It is used to treat many diseases including malaria, rheumatoid arthritis and systemic lupus erythematosus. Plaquenil eye exam frequency Hydroxychloroquine interaction with gabapentin Hydroxychloroquine retinopathy. It is known that some people who take. hydroxychloroquine for more than five years and/or in high doses are at increased risk of. damage to their retina, the light sensitive layer of cells at the back of the eye. This is known as. retinal toxicity or retinopathy. If you are taking Plaquenil to treat an inflammatory condition or malaria, you should be aware of the side effects that may occur to your eyes and vision. Plaquenil hydroxychloroquine is in a class of drugs called disease-modifying anti-rheumatic drugs, which are used to decrease inflammation, pain and joint damage. Risk for toxicity is least with less than 6.5 mg/kg/day for hydroxychloroquine and 3 mg/kg/day for chloroquine. Patients are at low risk during the first 5 years of treatment. Cumulative use in excess of 250 grams increases the risk for toxic retinopathy. Other risk factors include obesity, kidney or liver disease, older age. It is imperative that patients and physicians are aware of and watch for this drug’s ocular side effects. Retinal toxicity from hydroxychloroquine is rare, but even if the medication is discontinued, vision loss may be irreversible and may continue to progress. How quickly does eye damage progress hydroxychloroquine What can Hydroxychloroquine Plaquenil do to my eyes?, Plaquenil Side Effects on Your Eyes and Vision Chloroquine ciprofloxacinTaking plaquenil Hydroxychloroquine is the most commonly used AM, specifically because it has a lower risk for retinal toxicity than chloroquine. This may be because CQ crosses the blood-retinal barrier and HCQ does not. There is no retinal damage associated with the use of quinacrine. Drug spotlight on hydroxychloroquine Lupus Foundation of.. Hydroxychloroquine toxicity - EyeWiki. Plaquenil What You Need to Know - Kaleidoscope Fighting Lupus. 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. Hydroxychloroquine HCQ is an anti-malarial medication that has in recent times been utilized as treatment for a variety of autoimmune diseases, such as rheumatoid arthritis and systemic lupus erythematosus, and other inflammatory and dermatologic conditions. Retinal toxicity from HCQ, and its analog, chloroquine, has been recognized for many years.2,3 By some estimates, in the United. Dosage for Plaquenil. The adult dose of Plaquenil to suppress malaria is 400 mg on the same day each week. The pediatric weekly suppressive dosage is 5 mg/kg of body weight. The adult dose of Plaquenil to treat an acute attack of malaria is an initial dose of 800 mg followed by 400 mg in six to eight hours and 400 mg for two more days.