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. Plaquenil rp Easily bruising side effect of plaquenil Hydroxychloroquine 100 mg tablet Take this medicine by mouth. Swallow the tablets whole with a meal or a glass of milk. Do not crush or chew your tablets. If you are taking this medicine for skin problems that are sensitive to sunlight, only take hydroxychloroquine sulfate during periods of high exposure to light. The doctor will work out the dose depending on your body weight. 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 Background Hydroxychloroquine sulfate and other antimalarial drugs have been used successfully as adjunctive therapy for patients with cutaneous lesions of dermatomyositis over the past 20 years. An increased incidence of cutaneous reactions to hydroxychloroquine has been postulated to occur. 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 oral ulcers Hydroxychloroquine Reviews Everyday Health, Hydroxychloroquine Side Effects Common, Severe, Long Term. Chloroquine phosphate 500 mg side effects Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes. Call your doctor at once if you have Plaquenil, Plaquenil Sulfate, Quineprox hydroxychloroquine.. Adverse Cutaneous Reactions to Hydroxychloroquine Are More.. Plaquenil Hydroxychloroquine Side effects, Images, Uses.. Plaquenil tablets contain the active ingredient hydroxychloroquine, which is a type of medicine called a disease-modifying anti-rheumatic drug DMARD. purple spots, sore throat, mouth ulcers. Mouth ulcers is found among people who take Hydroxychloroquine sulfate, especially for people who are female, 60+ old, have been taking the drug for 5 - 10 years, also take medication Enbrel, and have Preventive health care Apr 29, 2019 When hydroxychloroquine is used with other medications it can be used to treat some auto-immune diseases. Doctors will use hydroxychloroquine to treat auto-immune diseases when other medications have not been successful or a patient cannot be on those medications.