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. Chloroquine cancer therapy Hydroxychloroquine and chloroquin Patients in whom chloroquine or hydroxychloroquine have failed to prevent or cure clinical malaria or parasitemia, or patients who acquired malaria in a geographic area where chloroquine resistance is known to occur should be treated with another form of antimalarial therapy see INDICATIONS AND USAGE - Malaria and WARNINGS. Before the administration of chloroquine, the patient had only a mild skin erythema in the irradiated area, which was consistent with the radiotherapy dose she had received. On day 3 of chloroquine therapy, she developed localized brisk bullous eruptions in the irradiated area, which developed into a patch of fulminant moist desquamation. Patients in whom chloroquine or hydroxychloroquine have failed to prevent or cure clinical malaria or parasitemia, or patients who acquired malaria in a geographic area where chloroquine resistance is known to occur should be treated with another form of antimalarial therapy see WARNINGS and INDICATIONS AND USAGE, Limitations of Use. 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 warnings Chloroquine - FDA prescribing information, side effects and uses, Chloroquine Side Effects Common, Severe, Long Term. Chloroquine phosphate for ichPlaquenil and ironWhat is plaquenil sulfate used forLong term side effects of hydroxychloroquine A boxed warning, the most serious kind of warning about these potential problems, has been added to the drug label. including chloroquine-resistant P. falciparum and P. vivax. FDA Drug Safety Communication FDA approves label changes for.. DailyMed - CHLOROQUINE PHOSPHATE tablet. Chloroquine Aralen - Side Effects, Dosage, Interactions - Drugs. Chloroquine is an anti-malaria medicine that works by interfering with the growth of parasites in the red blood cells of the human body. Parasites that cause malaria typically enter the body through the bite of a mosquito. Our Aralen chloroquine phosphate Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. SIDE EFFECTS. The following adverse reactions have been identified during post-approval use of PLAQUENIL or other 4-aminoqunoline compounds. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.