This medicine is also sometimes given off-label to help the following conditions: Also, let your doctor know if you drink large amounts of alcohol before starting on this medicine. Your doctor will probably want to order frequent tests to check your body's response to chloroquine. Excessive sleepiness plaquenil Plaquenil eye symptoms Proliferative Lupus Nephritis Treatment With Chloroquine and Hydroxychloroquine The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U. S. Federal Government. Chloroquine needs to be taken 1-2 weeks before traveling to an area with malaria, compared to some alternatives that can be taken 1-2 days before. chloroquine is only effective against malaria from certain areas of the world. chloroquine may worsen psoriasis, seizures, hearing problems, and liver conditions. Chloroquine phosphate is used occasionally to decrease the symptoms of rheumatoid arthritis and to treat systemic and discoid lupus erythematosus, scleroderma, pemphigus, lichen planus, polymyositis, sarcoidosis, and porphyria cutanea tarda. Let your healthcare provider know if your symptoms either don't improve or worsen while taking this medicine. Keep all appointments with your doctor and laboratory. Chloroquine in lupus Drug spotlight on hydroxychloroquine Lupus Foundation of America, Compare Plaquenil vs Chloroquine - Why does plaquenil workCoupons for generic plaquenilWhat stage of infection did the chloroquine treatTestimonials of people losing their hair from plaquenilPlaquenil rosacea treatment 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. Chloroquine Dosage Guide with Precautions -. Chloroquine MedlinePlus Drug Information. Hydroxychloroquine Uses, Dosage & Side Effects -. Find patient medical information for Chloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Despite widespread clinical use of antimalarial drugs such as hydroxychloroquine and chloroquine in the treatment of rheumatoid arthritis RA, systemic lupus erythematosus SLE and other. Chloroquine can be used to treat porphyria cutanea tarda, but in a very low dose 125 mg twice weekly as a dosage of 250 mg/day can trigger a porphyria crisis, which can be fatal. Chloroquine is contraindicated where there is a known hypersensitivity to 4-aminoquinoline compounds.