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. Chloroquine phosphate ich Plaquenil lupus dosage 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; 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. If you are taking Plaquenil to treat an inflammatory condition or malaria, you should be aware of the side effects that may occur to your eyes and vision. Plaquenil hydroxychloroquine is in a class of drugs called disease-modifying anti-rheumatic drugs, which are used to decrease inflammation, pain and joint damage. 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 gastrointestinal side effects Plaquenil Side Effects Common, Severe, Long Term -, Hydroxychloroquine Reviews Everyday Health Spell hydroxychloroquin 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. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about. Hydroxychloroquine Oral Route Side Effects - Mayo Clinic. Plaquenil Side Effects on Your Eyes and Vision. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Find patient medical information for Hydroxychloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. 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. Our Plaquenil hydroxychloroquine Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.