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. Cbd and plaquenil Plaquenil bleeding gums Chloroquine CQ and hydroxychloroquine Plaquenil HCQ have been used for many years, initially for the treatment of malaria but now more commonly for the treatment of inflammatory diseases such as rheumatoid arthritis and lupus 1. It is now considered for new disease applications in diabetes, heart disease and adjunct cancer therapies 2. Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except. Cardiac disorders Cardiomyopathy which may result in cardiac failure and in some cases a fatal outcome see WARNINGS and OVERDOSAGE. PLAQUENIL prolongs the QT interval. Ventricular arrhythmias and torsade de pointes have been reported in patients taking PLAQUENIL see OVERDOSAGE and DRUG INTERACTIONS. 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 Maternal Use of Hydroxychloroquine is Associated with a., What Conditions does Plaquenil Treat? - WebMD What are the side affects of hydroxychloroquineChloroquine is used for whatPlaquenil alcohol consumption Heart problems like heart failure and a certain abnormal heartbeat prolonged QT interval have happened with Plaquenil hydroxychloroquine. Sometimes, these heart problems have been deadly. Sometimes, these heart problems have been deadly. Plaquenil Indications, Side Effects, Warnings -. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects.. Plaquenil ® hydroxychloroquine – New Warnings • On January 27, 2017, the FDA approved new updates to the. Warnings. section of the Plaquenil hydroxychloroquine drug label regarding cardiac effects, including cardiomyopathy and QT prolongation, and hypoglycemia. • Plaquenil is indicated for the treatment of uncomplicated malaria due to 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 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.