This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. For prevention of malaria in adults, one dose is usually taken once a week on exactly the same day of the week. Cataract effective by taking plaquenil Calcium loss hydroxychloroquin therapy Find patient medical information for Chloroquine Injection on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Large chloroquine overdoses are almost inevitably fatal. We describe the presentation and management of a patient with such an overdose who survived, due to general supportive care and new specific treatment. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as. One dose is taken beginning 2 weeks before traveling to an area where malaria is common, while you are in the area, and then for 8 weeks after you return from the area. Your doctor will tell you how many tablets to take for each dose. Chloroquine overdose side effects Accidental hydroxychloroquine overdose resulting in., Massive chloroquine overdose--a survivor. Chloroquine off label use Immediate medical attention is required, as these effects may appear shortly after the overdose. Cases of extrapyramidal disorders have also been reported in the context of Chloroquine overdose see WARNINGS and ADVERSE REACTIONS. Chloroquine - FDA prescribing information, side effects.. Plaquenil Hydroxychloroquine - Side Effects, Dosage, Interactions - Drugs. Chloroquine - Wikipedia. Aralen chloroquine is an antimalarial drug used for the treatment of malaria and extraintestinal amebiasis. Common side effects are reduced hearing, tinnitus, nausea, vomiting, and diarrhea. Dosage, drug interactions, and pregnancy and breastfeeding safety are provided. Some side effects of chloroquine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of. Chloroquine comes in tablet form. Take this medication with food to minimize stomach upset. Chloroquine is taken once or twice a day. If used for the prevention of malaria, it is taken once a week beginning 2 weeks prior to traveling to an area where malaria is common. Common side effects include headache, loss of appetite, diarrhea, and upset.