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 and radiation therapy Hydroxychloroquine plaque psoriasis A cookie-cutter approach to dosing Plaquenil hydroxychloroquine, Sanofi-Aventis, an anti-malarial drug that has been used as a treatment for systemic lupus erythematosus and rheumatoid arthritis. Background/Purpose Hydroxychloroquine HCQ is a widely-used medication in many rheumatologic conditions. The most worrisome toxicity is irreversible damage to retinal pigment epithelium which can lead to blindness. The most recent 2016 guidelines from the American Academy of Ophthalmology AAO recommend the dose of HCQ ≤5 mg/kg real body weight to minimize toxicity1. According to these Nov 25, 2019 Detailed Hydroxychloroquine dosage information for adults and children. Includes dosages for Rheumatoid Arthritis, Systemic Lupus Erythematosus, Malaria Prophylaxis and more; plus renal, liver and dialysis adjustments. 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. Hydroxychloroquine dosage calculator Hydroxychloroquine Plaquenil Dosing Calculator - MDCalc, New Guidelines on Hydroxychloroquine Dosage - Where Are We. Success with plaquenilPlaquenil and antiplatelet drugsPlaquenil et maux de tete Plaquenil Hydroxychloroquine may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects.. Hydroxychloroquine Dosage Guide with Precautions -. Plaquenil Dosage - Antibiotics Home Page. This level is reached in about 7 years with the most common daily dose of Plaquenil, 400 mg/day 200 bid. The calculator below can be used to calculate a patient’s cumulative dose based on their dosage and duration of use. For dosages that have changed over time additional rows can be added to the calculation by pressing the “+” button. Ideal body weight Plaquenil dosing calculations are reprinted with permission from The Lupus Encyclopedia A Comprehensive Guide for Patients and Families, by Donald E. Thomas, published by Johns Hopkins University Press. Standard dosing At first, 800 milligrams mg 4 tablets taken as a single dose. Then, 400 mg taken 6 hours, 24 hours, and 48 hours after the first dose. Weight-based dosing Dose is based on body weight and must be determined by your doctor. At first, 13 milligram mg per kilogram kg of body weight taken as a single dose.