Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Cq chloroquine Plaquenil capsule Eye damage due to Plaquenil is not common,” he says. “Rarely will anybody who has good vision and minimal symptoms develop loss of central vision or ability to read if annual screening is done and visual are symptoms reported as soon as they occur so the medication can be stopped if toxicity occurs. Some diseases treated with Plaquenil include Lupus, which causes fever, rashes, skin problems, and other symptoms. Rheumatoid arthritis, a condition that causes pain and swelling in the joints of your hands and feet. Sjögren’s syndrome, which causes dry eyes and dry mouth. Plaquenil lowers your immune system’s ability to cause inflammation. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs. If you have had any eye changes or changes in eyesight due to hydroxychloroquine or drugs like this one. If you have psoriasis. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Plaquenil eye effects Taking Plaquenil for Rheumatoid Arthritis, What Is Plaquenil? - American Academy of Ophthalmology Dwarf lionfish and chloroquineCardiomyopathy caused by plaquenilHydroxychloroquine toxicity monitoringExcessive sleepiness plaquenilChloroquine base lethal dose Hydroxychloroquine is effective at treating autoimmune diseases. It is believed that hydroxychloroquine interferes with communication of cells in the immune system. SIDE is rare. It is recommended that you have an eye exam EFFECTS HOW TO TAKE IT Hydroxychloroquine comes in an oral tablet. Adult dosing ranges from 200mg or 400mg per day 5 mg per PATIENT FACT SHEET Hydroxychloroquine Plaquenil. Hydroxychloroquine Indications, Side Effects, Warnings.. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Feb 19, 2020 Common side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss. 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 lupus, rheumatoid arthritis, and others. Malaria is spread by mosquitoes. As PLAQUENIL may enhance the effects of a hypoglycemic treatment, a decrease in doses of insulin or antidiabetic drugs may be required. Also, there may be an increased risk of inducing ventricular arrhythmias if PLAQUENIL is used concomitantly with other arrhythmogenic drugs.