Pattern of Retinopathy: Although the locus of toxic damage is parafoveal in many eyes, Asian patients often show an extramacular pattern of damage. Dose: We recommend a maximum daily HCQ use of 5.0 mg/kg real weight, which correlates better with risk than ideal weight. Drug of choice for chloroquine resistant malaria Side effects of plaquenil on the eyes Chloroquine based chalcone Hydroxychloroquine is generally prescribed at a daily dose of 6.5 milligrams or less per kilogram of body weight. Using this formula, the dosage for a 150-pound person would be 443 mg/day, as one kilogram equals 2.2 pounds. Because HCQ is formulated as a 200 mg tablet, many people taking it for lupus will take two pills per day. Plaquenil toxicity isn’t even in the top 10, or the top 100” if you’re looking at incidence, he said. “It’s a pretty rare thing.” Nevertheless, he urged doctors to master the Academy’s new guidelines, because the effects from chloroquine and hydroxychloroquine, when they do occur. Retinal toxicity Retinal toxicity, potentially causing irreversible retinopathy, is predominantly associated with high daily doses and a duration of 5 years of use of chloroquine or hydroxychloroquine in the treatment of rheumatic diseases. Risk of Toxicity: The risk of toxicity is dependent on daily dose and duration of use. There are no similar demographic data for CQ, but dose comparisons in older literature suggest using 2.3 mg/kg real weight. Retinal toxicity dosage hydroxychloroquine Plaquenil Risk Calculators, Rx Side Effects New Plaquenil Guidelines and More. Is plaquenil an immunosuppressant medicationPlaquenil alt levlesHydroxychloroquine prices walmartsWhitepill with plaquenilCan i get chloroquine over the counter Hydroxychloroquine Retinal Toxicity. Proano C1, Kimball GP2. Color Vision Defects/chemically induced; Female; Humans; Hydroxychloroquine/adverse effects* Lupus Erythematosus, Systemic/drug therapy; Middle Aged; Ophthalmoscopy; Retina/diagnostic imaging* Retina/pathology; Retinal Diseases/chemically induced* Hydroxychloroquine Retinal Toxicity.. Hydroxychloroquine Professional Patient Advice -. Determine risk for hydroxychloroquine retinal toxicity Optometry Times. Several risk factors may increase the likelihood of retinal toxicity from Plaquenil such as, age of greater than 60 years, daily dose more than 6.5 mg/kg; use of the drug more than 5 years, obesity, preexisting retinal disease and, renal or liver failure. Risk factors for toxicity. Reported risk factors for toxicity include daily dose 400 mg, or 6.5 mg/kg ideal/lean body weight for short individuals; cumulative dose 1000 g; duration of use 5 years; renal or hepatic dysfunction; obesity; age 60 years; and pre-existing retinal disease or maculopathy 31. Retinal toxicity from hydroxychloroquine is rare, but even if the medication is discontinued, vision loss may be irreversible and may continue to progress. It is imperative that patients and physicians are aware of and watch for this drug’s ocular side effects.