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. Are there consequences to not taking plaquenil How long does it take for plaquenil to take effect Plaquenil hydroxychloroquine is a medication most known for its original purpose of treating or preventing malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Plaquenil hydroxychloroquine is considered an older DMARD disease modifying anti-rheumatic drug. Plaquenil was actually first classified as an antimalarial drug, but it is also used to treat certain rheumatic and autoimmune conditions which are unrelated to malaria. Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis, 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. 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 abbreviation Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis., Taking Plaquenil for Rheumatoid Arthritis Hydroxychloroquine and loratadinePlaquenil and lupus rash Plaquenil hydroxychloroquine is in a class of drugs called disease-modifying anti-rheumatic drugs, which are used to decrease inflammation, pain and joint damage. While today it is used to treat autoimmune conditions, such as rheumatoid arthritis and lupus, it was originally used as an anti-malaria drug. Plaquenil Side Effects on Your Eyes and Vision. PATIENT FACT SHEET Hydroxychloroquine Plaquenil. Plaquenil Hydroxychloroquine Sulfate. Jun 13, 2019 Plaquenil Hydroxychloroquine sulfate is a drug originally used to prevent or treat malaria. Malaria is a serious but rare disease caused by bites from infected mosquitos. Now the drug is used to treat inflammatory diseases. This type of disease occurs when the body's immune system attacks its own healthy tissue. Hydroxychloroquine, Plaquenil noun anti-inflammatory drug trade name Plaquenil used in the treatment of rheumatoid arthritis and malaria and lupus erythematosus Plaquenil, widely used to treat lupus, rheumatoid arthritis and other inflammatory and dermatologic conditions, is very effective, and “the risk of toxicity in the first five years for someone without special risk factors is very low,” Dr. Marmor said. However, risk increases with duration of use.