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. Lupus hydroxychloroquine sulfate Return of chloroquine antimalarial efficacy in malawi Chloroquine treatment typing discrepancy Retinal toxicity from plaquenil Plaquenil and Diplopia - a study from FDA data. Summary Diplopia is found among people who take Plaquenil, especially for people who are female, 50-59 old, have been taking the drug for 1 - 2 years, also take medication Methotrexate, and have Multiple myeloma. Feb 19, 2020 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. I have been on plaquenil for a while now and have started to have blurred vision. I have been to my eye doc. twice and all tests are normal. Should I continue to take it, I know that it can cause eye problems but my doc. says that it is very rare. 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. Plaquenil and double vision How lupus affects the eyes Lupus Foundation of America, Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses How to stop chloroquine itchingMacular degeneration plaquenil 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. Conditions Plaquenil-related Eye Problems Eugene Eye Care. Plaquenil and blurred vision.. Patient's Guide to Double Vision - Brigham and Women's Hospital. It is a derivative chloroquine, also an antimalarial agent which has a much higher risk of toxicity. Plaquenil can rarely cause a retinal problem involving the central visual area, or macula. Retinal toxicity from Plaquenil is rare, but even if the medication is discontinued, vision loss may be irreversible and may continue to progress. For women, start with 100 pounds, and add 5 pounds for every inch over 5 feet. For men, start with 106 pounds, and add 6 pounds for every inch over 5 feet. The maximum dose of Plaquenil is 6.5 mg/kg of ideal body weight per day, regardless of whether a person is overweight, underweight, or normal weight. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others.