Please consider using the search field or links below to navigate to the desired page on Hydroxychloroquine is a quinoline medicine used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Plaquenil help pleurisy Does plaquenil cause weight gain Which is more effective methotrexate or plaquenil 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. Hydroxychloroquine sulfate - Investigated as a drug. Only select Registry of Toxic Effects of Chemical Substances RTECS data is presented here. See actual entry in RTECS for complete information. Hydroxychloroquine SULFATE Side Effects by Likelihood and Severity INFREQUENT side effects. If experienced, these tend to have a Severe expression. A Disorder Of The Retina Of The Eye; This medicine is not effective against all strains of malaria. Malaria is common in areas such as Africa, South America, and Southern Asia. Hydroxychloroquine sulfate adverse effects Hydroxychloroquine Side Effects Common, Severe, Long Term -, SAFETY DATA SHEET Page 1 of 5 Hydroxychloroquine sulfate Revision. Plaquenil help migraine Find patient medical information for Hydroxychloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Hydroxychloroquine Oral Uses, Side Effects, Interactions, Pictures.. Common and Rare Side Effects for Hydroxychloroquine Oral. Plaquenil Hydroxychloroquine Sulfate. Hydroxychloroquine received an overall rating of 7 out of 10 stars from 368 reviews. See what others have said about Hydroxychloroquine, including the effectiveness, ease of use and side effects. Hydroxychloroquine side effects. Hydroxychloroquine side effects may vary greatly from very mild side effects that go away with time to severe side effects like eye damage, ear damage, or heart problems. Some side effects may be experienced as the body adjusts to hydroxychloroquine but may diminish as the body becomes used to the drug. Hydroxychloroquine typically is very well tolerated. Serious side effects are rare. The most common side effects are nausea and diarrhea, which often improve with time. Less common side effects include rash, changes in skin pigment such as darkening or dark spots, hair changes, and muscle weakness.