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. Can plaquenil affect menstruation Plaquenil to treat fibromyalgia Plaquenil sleeplessness Eye things behind eye from taking plaquenil Serious side effects and their symptoms can include the following blurred vision or other vision changes. ringing in your ears or hearing loss. angioedema, or rapid swelling of your skin. hives. mild or severe bronchospasm that causes trouble breathing. sore throat. unusual bleeding or. 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. Plaquenil is the newest & safest in the class. The drug helps with skin rashes, hair loss, mouth ulcers, joint pain & swelling, fatigue, etc. It takes perhaps 3-4 months to build up & reach full effect. GOOD NEWS hair loss & weight gain are NOT associated with Plaquenil. 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 plaquenil weight gain Plaquenil and weight gain -, Common and Rare Side Effects for Plaquenil Oral Plaquenil used for lyme diseasePlaquenil for lyme arthritis Plaquenil Side Effects. Nausea and vomiting, loss of appetite, and abdominal pain are some of the possible side effects of Plaquenil. In most cases, side effects of this medication are usually minor and do not require medical attention. However, be sure to contact your healthcare provider immediately if you experience hearing loss, muscle weakness. Plaquenil Side Effects - Antibiotics Home Page. Want to know good stuff about plaquenil - HealthBoards. Abnormal Weight Gain and Gut Microbiota Modifications Are.. The plaquenil has caused a weight gain of about 20-25 pounds for me. Since I was diagnosed with MCTD a year ago, Plaquenil has been the only medication besides eye supplements, thyroid meds - been stable for years, and most recently Evoxac that I have been given. Common Side Effects of Plaquenil. Dosing is usually much lower in children and infants depending on their body weight, usually 5 mg, calculated as base, per kilogram kg of body weight one. Feb 19, 2020 Common side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss.