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. Hydroxychloroquine eyesight Plaquenil pregnancy rheumatoid arthritis Hydroxychloroquine and l lysine In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345. List Hydroxychloroquine Powder side effects by likelihood and severity. Save up to 80% on your prescription with WebMDRx. Consult your pharmacist or physician. Hydroxychloroquine is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America. 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. 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. Hydroxychloroquine side effects medbullets Plaquenil Drug and Medication User Reviews on RxList, Hydroxychloroquine - Side Effects, Dosage, Interactions. Plaquenil retinal toxicity octHydroxychloroquine dosage by weightHow does plaquenil help with fatigueHydroxychloroquine ms While side effects of corticosteroids are usually to blame, there is also the possibility of ocular damage associated with long-term use of the antimalarial drugs hydroxychloroquine brand name Plaquenil® and chloroquine. Improved vision screening tests and updated dosing guidelines are key to avoiding such complications. Protecting your eyesight when taking Plaquenil Lupus.. Common and Rare Side Effects for Plaquenil Oral. What can Hydroxychloroquine Plaquenil do to my eyes?. 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 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. Retinal toxicity from hydroxychloroquine is rare, but even if the medication is discontinued, vision loss may be irreversible and may continue to progress. It is imperative that patients and physicians are aware of and watch for this drug’s ocular side effects.