I am asking this question, because I started this med approx. 1 month ago and prior to taking it I rarely ever got sick with colds,flu etc. Treatment of severe chloroquine poisoning Side effects of plaquenil withdrawal Suppressed Immune system because of steroids and 12.5 methotrexate. Thanks Immune system happy Christmas to you too. Oral surgeon says \"Breeding ground for bacteria\" and \"your immune system must be taking a beating\" Hydroxychloroquine ; Hydroxychloroquine SIDE EFFECTS. The following adverse reactions have been identified during post-approval use of PLAQUENIL or other 4-aminoqunoline compounds. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Hydroxychloroquine belongs to a group of medicines known as antimalarials. It works by preventing or treating malaria, a red blood cell infection transmitted by the bite of a mosquito. However, this medicine is not used to treat severe or complicated malaria. Around 2 weeks ago, I came down with a doozy of an illness (flulike with croup like cough that just won't quit). The only thing that usually ever ailed me were the crappy Sjogrens symptoms. Does hydroxychloroquine lower immune system Hydroxychloroquine - Wikipedia, Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses Sideeffects of plaquenilHow does plaquenil help autoimmune diseasesDmards plaquenilWhat if hydroxychloroquine doesn t workHydroxychloroquine tablets side effects All of my symtoms pretty much cleared up. Now this year I have been having things pop up that are related to a low immune system. Some of my doctors think It is the Plaquenil causing it but then some say that Plaquenil is not an immunosuppressant drug that for some reason my immune system is out of wack. I only take 200 mg a day. Is Plaquenil a immunosuppressant drug ? Autoimmune.. Hydroxychloroquine Oral Route Description and Brand Names - Mayo Clinic. Plaquenil What You Need to Know - Kaleidoscope Fighting Lupus. Plaquenil tablets contain the active ingredient hydroxychloroquine, which is a type of medicine called a disease-modifying anti-rheumatic drug DMARD. It is used to treat rheumatoid arthritis. 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. It alters your immune system, but as far as I know, it doesn't actually suppress it. Plus, if you have only been on it a month, it's probably not built up enough in your body to have much of an effect. I have actually been way HEALTHIER than ever since being on Plaquenil AND Methotrexate, which DOES suppress the immune system - go figure!