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. Hydroxychloroquine tablets ip hcqs-400 Oct hydroxychloroquine retinopathy Chloroquine endosome Sep 13, 2019 Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine may cause some unwanted effects. 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 Hydroxychloroquine is available as the brand-name drug Plaquenil. It’s also available in a generic version. Don’t take this drug again if you’ve ever had an allergic reaction to it. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is. 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. Allergic reaction from generic to plaquenil Allergy to Plaquenil - Lupus - Inspire, Hydroxychloroquine Side Effects, Dosage, Uses, and More Does hydroxychloroquine cause anxietyChloroquine dna mobility Find patient medical information for Plaquenil Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Plaquenil Oral Uses, Side Effects, Interactions, Pictures, Warnings.. Common and Rare Side Effects for Plaquenil Oral. Hydroxychloroquine Side Effects Common, Severe, Long Term -. That's a real common side effect of Lupus is unexplained rashes. If you've ever had an allergic reaction to a drug then this is the type of reaction you'd have if you were allergic to the Plaquenil; and they'd stay until the Plaquenil was out of your system. If they're coming and going more than likely it isn't the Plaquenil. Since the drug is cumulative in its effects you may be having an allergic reaction. My Father had the same reaction took him 3 weeks to develop it and he had to stop. It took 2 weeks for the rash to go away, but it was the Plaquenil. Now he's on Methotrexate and doing well. Nov 09, 2018 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.