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 contraindicated pregnancy Plaquenil and bradycardia Molecular weight of chloroquine phosphate Is hydroxychloroquine safe from dr reddy's lab 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. Hydroxychloroquine is a disease-modifying anti-rheumatic drug DMARD used for rheumatoid arthritis and lupus. Learn how long it takes, risks and side-effects. 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 Increased Incidence of Gastrointestinal Side Effects in., Plaquenil Side Effects on Your Eyes and Vision Chloroquine phosphate for ichDoes hydroxychloroquine have renal toxicityAcriflavine and chloroquinePlaquenil maculopathy mechanismsOn hydroxychloroquine 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. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. Hydroxychloroquine Side-effects, uses, time to work. PATIENT FACT SHEET Hydroxychloroquine Plaquenil. One of the most serious side effects is a toxicity in the eye generally with chronic use. People taking 400 mg of hydroxychloroquine or less per day generally have a negligible risk of macular toxicity, whereas the risk begins to go up when a person takes the medication over 5 years or has a cumulative dose of more than 1000 grams. Hydroxychloroquine is a well-tolerated medication for various rheumatologic and dermatologic conditions. Its main side effects are gastrointestinal upset, skin rash, headache, and ocular toxicity1. Within the eye, hydroxychloroquine can adversely impact the cornea, ciliary body, and retina1 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.