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 myalgias Hydroxychloroquine for gout Plaquenil received an overall rating of 5 out of 10 stars from 4 reviews. See what others have said about Plaquenil, including the effectiveness, ease of use and side effects. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil 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 Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. The New Zealand Dermatological Society recommends that to decrease the risk of retina damage, no more than 200mg of Plaquenil should be taken a day, and a dose of 400mg per day should be taken no longer than a few weeks. 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. Side effects of plaquenil pms Rx Side Effects New Plaquenil Guidelines and More., Plaquenil Side Effects Common, Severe, Long Term - Does hydroxychloroquine affect menstrual cycleWhat does plaquenil do for lupus patientsHydroxychloroquine 200 mg does it make u gain weight I have vision loss because of taking Plaquenil. I see wavy lines and blurry/blind spots in both eyes. I've taken this drug since 2000. It really helped with the pain I was having and kept all my la. ” Druginformer Identified Side Effects Flatulence, Nausea, Abdominal distension, Menstruation irregular. Hydroxychloroquine Sulfate Menstruation Irregular Reports.. Long-Term Side Effects of Plaquenil for Rheumatoid.. Plaquenil - Side Effects, Uses, Dosage, Overdose, Pregnancy, Alcohol.. RARE side effects. If experienced, these tend to have a Severe expression. Abnormal Liver Function Tests. Acute Liver Failure. Acute Pustular Eruptions On Skin. Bronchospasm. Decreased Blood Platelets. Decreased White Blood Cells. 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. Find patient medical information for Hydroxychloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.