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. Chloroquine alcohol Plaquenil medicine side effects Fang and hydroxychloroquine screening Chloroquine resazurin assay results Where does hydroxychloroquine fit in? Now this is the important part because this is where hydroxychloroquine can cause problems the macula. The macula is a specialized place on your retina that has cells that enable you to see fine details with high acuity. One of the most serious side effects is a toxicity in the eye generally with chronic use. People taking 400 mg of hydroxychloroquine or less per day generally have a negligible risk of macular toxicity, whereas the risk begins to go up when a person takes the medication over 5 years or has a cumulative dose of more than 1000 grams. 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. Call your doctor at once if you have Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. What does hydroxychloroquine do to your eyes Hydroxychloroquine - Side Effects, Dosage, Interactions., Hydroxychloroquine - Wikipedia Raynauds and hydroxychloroquineChloroquine phosphate and alcoholHydroxychloroquine is it water pill Diagnosis Hydroxychloroquine-induced retinal toxicity Discussion. Chloroquine CQ and hydroxychloroquine Plaquenil HCQ have been used for many years, initially for the treatment of malaria but now more commonly for the treatment of inflammatory diseases such as rheumatoid arthritis and lupus 1. Hydroxychloroquine Plaquenil Toxicity and Recommendations for Screening. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. What can Hydroxychloroquine Plaquenil do to my eyes?. There is a small risk that hydroxychloroquine can damage your retina part of the eye, and this increases with long-term use and higher dosage. Your doctor will advise you on a safe dose to take according to your weight, and you will need to have regular monitoring of your eyes. Plaquenil has important but uncommon side effects that may affect your eye. How does Plaquenil affect your eyes? The most important affect of Plaquenil on your eye is to damage the retina at the back of your eye. Fortunately, this is very uncommon and generally only occurs in patients on high doses or patients with bad kidney function. In summary, if you have Sjögren’s, hydroxychloroquine may be an option to help your symptoms. Because there are other more effective therapies available to treat dry eyes and dry mouth, it is typically prescribed to help musculoskeletal pain and fatigue. Be patient, as the drug may take up to 6 months to see a beneficial effect.