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? Zydus hydroxychloroquine gluten Cheapest price for hydroxychloroquine Plaquenil hydroxychloroquine Prescription only. 93% of people say it’s worth it. 1 dosage forms. $25.54 is the lowest price near you. The Plaquenil and sulfasalazine allergies manifested exactly the same way, though the sulfa reaction was a bit more severe. I'm also allergic to the sulfonomide, erythromycin, so I think it's fair to say that anything related to sulfa drugs is off the menu. 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. 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 Plaquenil - FDA prescribing information, side effects and uses, Sulfa & Plaquenil allergies related? DailyStrength Chloroquine vs hydroxychloroquine autophagyIs hydroxychloroquine an immunosuppressiveTaking plaquenil on misdiagnosis 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? If you are allergic to sulfa drugs does this mean you can't take plaquenil?. Sulfa allergy Which medications should I avoid? - Mayo Clinic. Plaquenil Hydroxychloroquine Sulfate. These are not sulfates. Sulfate used after a drug name is just the last name of the chemical, its the sulfate salt. It has nothing to do with sulfonamides. Allergy to sulfonamide antibiotics has no relationship to allergies to hydroxychloroquine. 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 Bactrim and Plaquenil drug interactions - a real-world study. Summary Drug interactions are reported among people who take Bactrim and Plaquenil together. This study is created by eHealthMe based on reports of 442 people who take Bactrim and Plaquenil from Food and Drug Administration FDA, and is updated regularly.