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. Undifferentiated connective tissue disease and plaquenil Recommended dosage of plaquenil Half life of hydroxychloroquine American academy ophthalmology plaquenil guidelines 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. Some manifestations of lupus occur more frequently in association with low platelet count in these patients, for example, neuropsychiatric manifestation, haemolytic anaemia, the antiphospholipid syndrome and renal disease. Thrombocytopenia can be regarded as an important prognostic indicator of survival in patients with SLE. 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. Although not all of these side effects may occur, if they do occur. 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 thrombocytopenia Refractory immune thrombocytopenia successfully treated with., Haematological manifestations of lupus Lupus Science & Medicine What is hydroxychloroquine made ofPlaquenil monitoring labsPlaquenil standard of careChloroquine effective against malariaResidul plaquenil in the eye Dosage for Plaquenil. The adult dose of Plaquenil to suppress malaria is 400 mg on the same day each week. The pediatric weekly suppressive dosage is 5 mg/kg of body weight. The adult dose of Plaquenil to treat an acute attack of malaria is an initial dose of 800 mg followed by 400 mg in six to eight hours and 400 mg for two more days. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. Plaquenil Side Effects Common, Severe, Long Term -. Hydroxychloroquine - Wikipedia. Rarely, hydroxychloroquine can affect the bone marrow leading to reduced white blood cells leukopenia or platelets thrombocytopenia and abnormal red blood cells anemia. Rare but potentially serious eye toxicity can occur. This toxicity affects a part of the eye called the retina and can lead to color blindness and even loss of vision. Immune thrombocytopenia usually happens when your immune system mistakenly attacks and destroys platelets, which are cell fragments that help blood clot. In adults, this may be triggered by infection with HIV, hepatitis or H. pylori — the type of bacteria that causes stomach ulcers. A low platelet count is a blood disorder that can sometimes be serious. This article looks at platelets and their role within the body. Find out about the many possible causes of a low count.