Chloroquine is now uncommonly used in favor of its derivative hydroxychloroquine. In the United States, hydroxychloroquine is most often used for its anti-inflammatory effects in rheumatology and dermatology. Chloroquine lethal dose Plaquenil autoimmune neutropenia Plaquenil retinopathy autofluorescence Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. Ocular Surgery News The American Academy of Ophthalmology has published several dosing and screening recommendations for hydroxychloroquine to avoid potential retinal toxicity, yet some patients. If you are also taking kaolin or antacids, take them at least 4 hours before or after using chloroquine. If you are also taking ampicillin, take it at least 2 hours before or after using this medicine. Dosing. The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. While early toxicity may be asymtomatic, patients with more advanced stage of toxicity may complain of color vision changes or paracentral scotomas. Its toxic effects on the retina are seen in the macula. Chloroquine dosing for ophthalmology Revised recommendations on screening for chloroquine and., Despite Plaquenil dosing recommendations, retinal toxicity. Naproxen and hydroxychloroquineDo you need to take pain meds with plaquenilCheap aralen phosphatePrice hydroxychloroquineChloroquine and sun exposure Find patient medical information for Chloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Chloroquine Oral Uses, Side Effects, Interactions.. Chloroquine Oral Route Proper Use - Mayo Clinic. Chloroquine Professional Patient Advice -. Hydroxychloroquine retinopathy is most influenced by daily dose and duration of use. Risk for toxicity is less with 5.0 mg/kg real weight/day for hydroxychloroquine and 2.3 mg/kg real weight/day for chloroquine. Patients are at low risk during the first 5 years of treatment. For treatment of acute attacks of malaria in adults, one dose is usually taken right away, followed by half the dose 6 to 8 hours later and then half the dose once a day for the next 2 days. For prevention and treatment of malaria in infants and children, the amount of chloroquine phosphate is based on the child's weight. Usual Adult Dose for Malaria Prophylaxis. 500 mg chloroquine phosphate 300 mg base orally on the same day each week Comments-If possible, suppressive therapy should start 2 weeks prior to exposure; if unable to start 2 weeks before exposure, an initial loading dose of 1 g chloroquine phosphate 600 mg base may be taken orally in 2 divided doses, 6 hours apart.