I thought it was a sulfa drug or at least in the same class. I would have thought that the "sulfate" in the name would be a give away? Common side effects of plaquenil Chloroquine vs primaquine It is frequently sold as a sulfate salt known as hydroxychloroquine sulfate. 200 mg of the sulfate salt is equal to 155 mg of the base. Brand names of hydroxychloroquine include Plaquenil, Hydroquin, Axemal in India, Dolquine, Quensyl, Quinoric. References Hydroxychloroquine sulfate Plaquenil is not a sulfa drug. That is a misconception. However, hydroxychloroquine can be associated with serious dermatological side effects including severe rashes and exacerbation of psoriasis. Plaquenil hydroxychloroquine belongs to a group of medicines called quinolines. Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Plaquenil (hydroxychloroquine) belongs to a group of medicines called quinolines. The active components are bound to a sulphur compound as it slows down release times compared to hydrogen chloride which are usually found in faster release medications. what you are allergic to is sulfonamides like bactrim, right? Sulfate used after a drug name is just the last name of the chemical, its the sulfate salt. Is plaquenil a sulfonamide Bactrim and Plaquenil drug interactions - eHealthMe, Plaquenil and Sulfa Allergies" Lupus Community - Support. What are altered effects of hydroxychloroquineHow long does it take plaquenil to damage bones Find patient medical information for Plaquenil Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Plaquenil Oral Uses, Side Effects, Interactions.. Plaquenil Uses, Dosage & Side Effects -. Immune & Autoimmune - Lupus Any difference with Brand Plaquenil or. PLAQUENIL is indicated for the treatment of uncomplicated malaria due to P. falciparum, P. malariae, P. ovale, and P. vivax. PLAQUENIL is indicated for the prophylaxis of malaria in geographic areas where chloroquine resistance is not reported. Anyway, they did not diagnose her with anything specific but put her on Imuran along with the steroids she is taking. I think this is a really strong drug for her to take, especially if she is not fighting infections on just the steroids. But the doc said that they cannot give her plaquenil because she is allergic to sulfa drugs. Is this right? Other medications that may cause a reaction. Other types of sulfa medications may trigger a reaction in some people who have a sulfa allergy Sulfasalazine Azulfidine, used to treat Crohn's disease, ulcerative colitis and rheumatoid arthritis. Dapsone, used to treat leprosy, dermatitis and certain types of pneumonia.