what is plaquenil
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).ow to use Plaquenil. Lupus and/or rheumatoid arthritis patients will most likely take this medication by mouth, usually once or twice daily or as directed. Hydroxychloroquine generally is given to adults in doses of 200 mg or 400 mg per day. In some cases, higher doses can be used.