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. Hydroxychloroquine instructions Plaquenil rebate Chloroquine proguanil dosage Check with your doctor immediately if any of the following side effects occur Get emergency help immediately if any of the following symptoms of overdose occur Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Adverse effects Seizures. Deafness or tinnitus. Nausea, vomiting, diarrhea, abdominal cramps, and anorexia. Mild and transient headache. Skin itchiness, skin color changes, hair loss, and skin rashes. Unpleasant metallic taste. Chloroquine retinopathy. Hypotension and electrocardiographic. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345. List Chloroquine Hcl Solution side effects by likelihood and severity. Save up to 80% on your prescription with WebMDRx. Consult your pharmacist or physician. 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. Side effects of chloroquine drugs Chloroquine Oral Tablet Drug Information, Side Effects, Faqs, Chloroquine - Wikipedia Cdc chloroquine dosingHydroxychloroquine and neuropathy Common Side Effects of Plaquenil. Tell your doctor if any of the following side effects, as they may be indications of a more serious reaction Headache; Loss of appetite; Dizziness; Nausea Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Chloroquine Injection Uses, Side Effects, Interactions.. Chloroquine Oral Route Side Effects - Mayo Clinic. Common Side Effects of Chloroquine. Tell your doctor if any of the following side effects become severe or don't go away Loss of appetite; Mild dizziness; Mild diarrhea; Clumsiness; Mild headache In this study, no serious side effects related to chloroquine were reported. But during the first week of treatment with chloroquine, 1 participant stopped the study because of moderately severe digestive gastrointestinal side effects. 12. Additional information on side effects known to be associated with chloroquine can be found in the FDA-approved Full Prescribing Information for Chloroquine. 5. Because chloroquine is still being studied, information on possible side effects of the drug. Oct 01, 2018 Chloroquine has been shown to cause severe hypoglycemia including loss of consciousness that could be life-threatening in patients treated with or without antidiabetic medications see PRECAUTIONS, Drug Interactions.