It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Malaria is spread by mosquitoes, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Ra drug plaquenil Plaquenil prevebt lupus flare Patient assistance for plaquenil Tell your doctor if you have any side effect that bothers you or does not go away. These are not all the possible side effects Plaquenil. For more information, ask your doctor or pharmacist. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. Plaquenil Side Effects by Likelihood and Severity INFREQUENT side effects. If experienced, these tend to have a Severe expression. A Disorder Of The Retina Of The Eye;. RARE 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 For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Long term side effects of plaquenil Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses, Common and Rare Side Effects for Plaquenil Oral Chloroquine lung cancerHow to take aralenCan you chew plaquenilChloroquine research Some side effects of hydroxychloroquine 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. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Plaquenil Side Effects Common, Severe, Long Term -. Plaquenil Side Effects on Your Eyes and Vision. Been on plaquenil close to 3 months now and haven't noticed any side effect so far. Eye problems is one of the more serious side effects from plaquenil that you hear people talk about. My rheumy says it's mostly long term that causes the eye problems but recommends me to keep regular eye exams and make them aware that I'm on it. 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. Three anti-malarial drugs are prescribed for lupus symptoms. Hydroxychloroquine Plaquenil is the most commonly prescribed because it is generally believed to cause fewer side effects; chloroquine Aralen has a reputation for more serious side effects, but it may be prescribed in situations where hydroxychloroquine cannot be used.