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. Plaquenil ppd test Can plaquenil cause vertigo North star pharmaceuticals makers of hydroxychloroquine Chloroquine and Hydroxychloroquine Overdose Chloroquine Aralen®is commonly used for the treatment and prevention of malaria. Hydroxychloroquine, a constituent of chloroquine, is sold in the U. S. as Plaquenil® and is also utilized for its anti-malarial activity. 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. Chloroquine and hydroxychloroquine belong to the quinolone family. They are related drugs with similar clinical indications for use and similar manifestations of retinal toxicity, although their therapeutic and toxic doses differ. 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 overdose symptoms Chloroquine retinopathy - Wikipedia, Chloroquine - Wikipedia Layers of retina affected with plaquenilDmards plaquenilChloroquine sensitive p falciparum area Get emergency help immediately if any of the following symptoms of overdose occur Symptoms of overdose. Cold, clammy skin decreased urine drowsiness dry mouth fast, weak pulse increased thirst lightheadedness, dizziness, or fainting loss of appetite muscle pain or cramps numbness or tingling in the hands, feet, or lips Chloroquine Oral Route Side Effects - Mayo Clinic. Chloroquine and Hydroxychloroquine Toxicity Practice Essentials.. Chloroquine Side Effects Common, Severe, Long Term -. Chloroquine Phosphate. Uses. Chloroquine is used to prevent or treat malaria caused by mosquito bites in countries where malaria is common. Malaria parasites can enter. Side Effects. Precautions. Interactions. Common, nonocular, side effects of chloroquine and hydroxychloroquine include pruritus, headaches, dizziness, and gastrointestinal upset. Less frequent side effects include discoloration of the oral cavity, nails, skin and hair and rash. Symptoms and Signs. Symptoms. Patients in earlier stages of hydroxychloroquine retinal toxicity usually do not experience symptoms, though the rare patient may note a paracentral scotoma that causes trouble with reading as well as diminished color vision. However, most patients usually notice symptoms only after scotomas have become severe.