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-like drugs Hydroxychloroquine with histoplasmosis Can plaquenil and metoprolol tartrate Uronema chloroquine phosphate Sep 13, 2019 Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. 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. Vision changes/loss of vision There is a chance that retinal damage will occur while taking hydroxychloroquine Plaquenil or chloroquine Aralen. This is called known as hydroxychloroquine retinopathy. Apr 10, 2019 Plaquenil side effects. Get emergency medical help if you have signs of an allergic reaction to Plaquenil hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Taking Plaquenil long-term or at high doses may cause irreversible damage to the retina of your eye. 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. Plaquenil for weight loss Plaquenil and loss of appetite - Lupus - MedHelp, Plaquenil What You Need to Know - Kaleidoscope Fighting Lupus How to make hydroxychloroquine at home electrolysisChloroquine exocytosis Find user ratings and reviews for Plaquenil oral on WebMD including side effects and drug interactions, medication effectiveness, ease of use and satisfaction Plaquenil oral Reviews and User Ratings Effectiveness, Ease.. Plaquenil Uses, Dosage & Side Effects -. Plaquenil and weight gain -. I have been on plaquenil for many a year, and it has not affected my weight at all. If you go to or rxlist.com, neither of them list weight gain as a side effect, while they both list "nausea, vomiting, stomach pain; loss of appetite, weight loss" as side effects. Just wondering if anyone else had problems with loss of appetite and weight loss while on plaquenil. I had my dose increased to 400mg a day about three weeks ago, and since then I have no appetite whatsoever. Weight is falling off me at a rather alarming rate - at least half a stone a week. Usually Plaquenil related hair loss starts 2-6 months after the Plaquenil was started. We call this a drug induced telogen effluvium. If the Plaquenil was started 10 years ago and a patient reports hair loss last month, it’s not very likely that the Plaquenil is the culprit. That is often forgotten.