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. Hair loss lupus plaquenil Hydroxychloroquine retinopathy symptoms Plaquenil Can you combine doxycycline hyclate with plaquenil Cases of cardiomyopathy resulting in cardiac failure, in some cases with a fatal outcome, have been reported in patients treated with PLAQUENIL. PLAQUENIL should be discontinued if Note This document contains side effect information about hydroxychloroquine. Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Plaquenil is used to treat or prevent malaria and to treat the symptoms of rheumatoid arthritis. Learn about side effects, interactions and indications. Skip to Content 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 cardiac Hydroxychloroquine Plaquenil Toxicity and., Plaquenil Side Effects Common, Severe, Long Term - Plaquenil reportHydroxychloroquine sulfate tablets usesWhat is chloroquine sulphate used forChloroquine metabolismHydroxychloroquine chronic fatigue Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. Hydroxychloroquine Plaquenil Side Effects & Dosage for.. Plaquenil Uses, Dosage & Side Effects -. Plaquenil hydroxychloroquine sulfate dose, indications.. Plaquenil received an overall rating of 5 out of 10 stars from 4 reviews. See what others have said about Plaquenil, including the effectiveness, ease of use and side effects. PLAQUENIL prolongs the QT interval and should not be administered with other drugs that have the potential to induce cardiac arrhythmias. Also, there may be an increased risk of inducing ventricular arrhythmias if PLAQUENIL is used concomitantly with other arrhythmogenic drugs. In rare cases, Plaquenil can cause cardiomyopathy, a chronic disease of the heart muscle. If you're taking Plaquenil for an autoimmune condition, your symptoms should begin to improve after a few.