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 liver failure Hydroxychloroquine mechanism of action usmle Taking Hydroxychloroquine develop toxicity2 It’s rare for side effects to occur with Plaquenil if the medication is dosed properly Side effects Blurred vision, bull’s eye maculopathy, scotoma, vortex keratopathy, headache, accommodative dysfunction, whitening of eyelashes, phototoxicity3 Note This document contains side effect information about hydroxychloroquine. Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Hydroxychloroquine sulfate HCQ, Plaquenil is an analogue of chloroquine CQ, an antimalarial agent, used for the treatment of systemic lupus erythematosus, rheumatoid arthritis and other autoimmune disorders. Its use has been associated with severe retinal toxicity, requiring a discontinuation of therapy. 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 toxicity and eyes Has anyone experienced plaquenil toxicity with damage to eyes?, Plaquenil Side Effects Common, Severe, Long Term - Chloroquine phosphate pronounceHow long does it take for chloroquine to workChloroquine dose in malariaPlaquenil side effects liverChloroquine cost canada 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. Plaquenil Side Effects on Your Eyes and Vision. Retinal toxicity associated with chronic exposure to.. The Risk of Retinal Toxicity with Plaquenil. Plaquenil and Eye Problems Plaquenil can cause serious vision problems that aren't always reversible. Tell your doctor immediately if you notice any changes in vision or if you've ever had vision. Once retinal toxicity from hydroxychloroquine occurs, it is thought that the retinal changes are permanent and the disease can progress even if hydroxychloroquine is stopped for 1 to 3 years. Newer techniques for evaluation of retinal disease have been developed and these techniques can detect retinal toxicity earlier. Plaquenil is a drug used to treat Rheumatoid Arthritis and Systemic Lupus Erythematosis. It is a very good drug and gives many patients significant relief from their symptoms. Plaquenil related eye complications are not common. Plaquenil can produce pigment changes in the macula of the retina.