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. Plaquenil tongue Cuando dejat de tomar la hydroxychloroquine Hydroxychloroquine pigmentation histology RARE side effects. If experienced, these tend to have a Severe expression. Abnormal Liver Function Tests. Acute Liver Failure. Acute Pustular Eruptions On Skin. Bronchospasm. Decreased Blood Platelets. Decreased White Blood Cells. 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. Insulin or antidiabetic drugs As Plaquenil may enhance the effects of a hypoglycemic treatment, a decrease in doses of insulin or antidiabetic drugs may be required. Drugs that prolong QT interval and other arrhythmogenic drugs Plaquenil prolongs the QT interval and should not be administered with other drugs that have the potential to induce cardiac arrhythmias. 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 side effects neuropathy Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis., Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses Free plaquenilPlaquenil and irritable bowel syndromePlaquenil manufacturer concordiaDoes plaquenil lower plateletsChloroquine sigma ready made Some side effects of hydroxychloroquine 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. Hydroxychloroquine Side Effects -. Plaquenil - FDA prescribing information, side effects and uses. Rx Side Effects New Plaquenil Guidelines and More.. Plaquenil is the brand name of hydroxychloroquine, a drug used to prevent or treat malaria. Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. Other side effects people have besides Optic neuropathy * Vision Blurred 1 person, 25.00%. Rash Erythematous redness of the skin 1 person, 25.00%. Papilloedema optic disc swelling 1 person, 25.00%. Oropharyngeal Pain 1 person, 25.00%. Halo Vision rainbow vision 1 person, 25.00%. For the Consumer. Continuing ringing or buzzing or other unexplained noise in the ears. feeling of constant movement of self or surroundings. irritability. nausea. nervousness. nightmares. sensation of spinning. shakiness and unsteady walk. uncontrolled eye movements. unsteadiness, trembling, or.