It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Malaria is spread by mosquitoes, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Patient teaching when taking hydroxychloroquine Hydroxychloroquine prednisone adverse effects Side effects include irritability, headache, weakness, hair lightening or loss, stomach upset, nausea, dizziness, muscle pain, rash and itching. Rarely, hydroxychloroquine can affect the bone marrow leading to reduced white blood cells leukopenia or platelets thrombocytopenia and abnormal red blood cells. Rare but potentially serious eye toxicity can occur. Effects on the eye The most important side effect of. hydroxychloroquine is on the eye. Blurred vision may occur in the first few weeks. after starting hydroxychloroquine. This usually returns to normal even when you continue taking the tablets. Talk to your doctor if you are worried. Taking high doses 600 mg per day of. hydroxychloroquine over a long time more than If you are taking hydroxychloroquine for symptoms of rheumatoid arthritis, your symptoms should improve within 6 months. If your rheumatoid arthritis symptoms do not improve, or if they worsen, stop taking the drug and call your doctor. Once you and your doctor are sure the drug works for you. For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Hydroxychloroquine side effects vision What can Hydroxychloroquine Plaquenil do to my eyes?, Hydroxychloroquine – what you can expect when starting. Pregnant plaquenil low platelts Cetirizine Zyrtec and others, an antihistamine, can cause pupillary changes, blurred vision and keratoconjunctivitis sicca. Of nine cases reported to the Registry, eight involved children. Erectile dysfunction drugs cause a range of side effects that are common, dosage-dependent and, thus far. Rx Side Effects New Plaquenil Guidelines and More - American.. Hydroxychloroquine MedlinePlus Drug Information. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Macular Society Eye screening for patients taking hydroxychloroquine. Hydroxychloroquine is a medication used to treat several conditions including rheumatoid arthritis, systemic lupus erythematosus, some skin conditions especially photosensitive ones and others that involve inflammation. What are the side effects of taking hydroxychloroquine? Hydroxychloroquine side effects that may occur include loss of appetite and vision changes. Home Inspire Treatments Some side effects 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.