Hydroxychloroquine is available as the brand-name drug Plaquenil. Generic drugs usually cost less than the brand-name version. Hydroxychloroquine may be used as part of a combination therapy. Autophagic flux chloroquine Is plaquenil safer than methotrexate Mechanism of action of hydroxychloroquine in rheumatoid arthritis Hydroxychloroquine weight gain In this review, we analyze Plaquenil side effects by the time on the drug, gender and age of the people who have side effects while taking Plaquenil. The review is based on 57,733 people who have side effects while taking the drug from Food and Drug Administration FDA. The information that eHealthMe analyzes includes Most side effects will go away when your body gets used to the medicine. Tell your doctor if you have these side effects. A lower dose may stop them. Do not lower the dose on your own. Plaquenil stays in your body for about 3 months. If you must stop it, it will take a while for the side effects to go away. Side Effects. Nausea, stomach cramps, loss of appetite, diarrhea, dizziness, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Hydroxychloroquine is used to treat lupus erythematosus and rheumatoid arthritis. It isn’t fully understood how this drug works to treat lupus erythematosus or rheumatoid arthritis. That means you may need to take it with other drugs. It treats malaria by killing the parasites that cause the disease. What are the side effects of plaquenil Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses, Lupus Medicines Hydroxychloroquine - Brigham and Women's. Recommended dosage of plaquenilHydroxychloroquine shelf lifeTherapeautic dose of plaquenil for lupusPlaquenil for alopecia areataCan plaquenil cause dry mouth This means that the side effects of Plaquenil are mild and infrequent compared with its potential benefits. As with any medication, allergic reactions including skin rashes and non-allergic reactions can occur. The side effect that is of greatest concern is retinal toxicity. The Risk of Retinal Toxicity with Plaquenil. Plaquenil Oral Uses, Side Effects, Interactions.. HYDROXYCHLOROQUINE - ORAL Plaquenil side effects.. Tell your doctor if any of the following side effects, as they may be indications of a more serious reaction Headache. Loss of appetite. Dizziness. Nausea. Diarrhea, vomiting, or stomach pain. Skin rash. 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 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.