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. Is plaquenil harmful Hydroxychloroquine side effects ocular Lupus alternatives to plaquenil Chloroquine mechanism of action iodine Lupus and constipation may also be linked in patients whose digestive tract muscles are not highly effective at facilitating peristalsis. As a consequence, the waste matter moves through the large intestines at a slower speed than normal. Nutritional Intervention for Patients with Constipation and Lupus. Constipation can be treated using. Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. Note This document contains side effect information about hydroxychloroquine. 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. 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 and constipation Plaquenil and corona lupus, Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria Hydroxychloroquine plaquenil and pregnancyHydroxychloroquine sulfate tablet side effects Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. Hydroxychloroquine Plaquenil. Plaquenil Side Effects Common, Severe, Long Term -. Bad Side Effects of Plaquenil -. Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as. Here are 10 things to keep in mind when using Plaquenil Take it on a regular schedule, meaning at the same time each day. Take Plaquenil EXACTLY as prescribed by your physician. Do not stop taking the medication without first speaking to your doctor. Taking Hydroxychloroquine with food and/or milk can help prevent stomach upset.