Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Benefits of using plaquenil Plaquenil pill side effect Make sure you meet with your doctor in using Plaquenil to avoid unwanted potential side effects. Every medicine has a propensity to cause unwanted effects along with its desired effects. Although these side effects may occur only in a handful of patients but if they do occur, contact your physician immediately. Consumer information about the medication HYDROXYCHLOROQUINE - ORAL Plaquenil, includes side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug HYDROXYCHLOROQUINE - ORAL. Some side effects may occur that usually do not need medical attention. 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. Hydroxychloroquine may also be used for purposes not listed in this medication guide. Hydroxychloroquine is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Side effects plaquenil 200 mg Hydroxychloroquine Side Effects, Dosage, Uses, and More, HYDROXYCHLOROQUINE - ORAL Plaquenil side effects, medical. Hydroxychloroquine loss of appetite Hydroxychloroquine is taken in tablet form, with or after food. Your doctor will advise you about the correct dose. Usually you will start on a full dose of 200–400 mg daily, and later your doctor may reduce this. When your condition is very well controlled you may be advised to take hydroxychloroquine only 2–3 times per week. Hydroxychloroquine Side-effects, uses, time to work. Plaquenil Side Effects - GoodRx. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Find treatment reviews for Hydroxychloroquine from other patients. Learn from their experiences about effectiveness, side effects and cost Dismiss this notification PatientsLikeMe would like to remind you that your browser is out of date and many features of the website may not function as expected. 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. Sep 13, 2019 For the Consumer. Continuing ringing or buzzing or other unexplained noise in the ears. feeling of constant movement of self or surroundings. irritability. nausea. nervousness. nightmares. sensation of spinning. shakiness and unsteady walk. uncontrolled eye movements. unsteadiness, trembling, or.