This information should not take the place of medical care and advice from your healthcare providers. Hydroxychloroquine is a medication used to prevent and treat malaria and to treat autoimmune conditions such as rheumatoid arthritis or lupus. Hydroxychloroquine structure Plaquenil diarrhea nausea Technically, Plaquenil does not have an official pregnancy Category rating, as is common with older medications. However, most sources consider it to be a pregnancy Category C medication. In animal studies, it was shown that Plaquenil crosses the placenta and accumulates in the eyes of the fetus and remains there for several months. PLAQUENIL This medicine is a white, dog-bone, film-coated, tablet imprinted with "PLAQUENIL". Plaquenil belongs in a class of medications known as disease-modifying antirheumatic drugs DMARDs. For more information on rheumatoid arthritis or lupus in pregnancy please see the Mother To Baby fact sheet on those topics at: https://mothertobaby.org/fact-sheets/rheumatoid-arthritis/pdf or https://mothertobaby.org/fact-sheets/lupus-pregnancy/pdf/. Hydroxychloroquine is sold under several brand names, including Plaquenil®. What category is plaquenil Plaquenil hydroxychloroquine Basics, Side Effects & Reviews., Plaquenil Oral Uses, Side Effects, Interactions. Plaquenil eye pain Plaquenil; Descriptions. Hydroxychloroquine is used to treat malaria. It is also used to prevent malaria infection in areas or regions where it is known that other medicines eg, chloroquine may not work. Hydroxychloroquine Oral Route Description and Brand Names.. Plaquenil What You Need to Know - Kaleidoscope Fighting Lupus. New Plaquenil Guidelines. Plaquenil is the brand name for the prescription drug hydroxychloroquine. 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. Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. Last night, my boyfriend and I went to a basketball game in Milwaukee. I was kind of pensive about the whole thing, because I knew I was going to need to take more plaquenil in the middle of the game. But it all worked out great, because I got to be the go-and-get-food-and-soda person.