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. Malaria is spread by mosquitoes, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Chloroquin andgranuloma annulare Plaquenil side effects constipation Plaquenil and touble eye focus This page from the eMedTV Web site continues the discussion on drug interactions with metoprolol tartrate. It explains the problems that may occur when it is combined with cimetidine, clonidine, diphenhydramine, and more. Does Plaquenil Interact with other Medications? Severe Interactions. These medications are not usually taken together. Consult your healthcare professional e.g. doctor or pharmacist for more in. 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. For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Benadryl and hydroxychloroquine Can You Take Benadryl With Plaquenil, Plaquenil Oral Interactions with Other Medication High risk drug use icd 10 plaquenilPlaquenil kills Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. Hydroxychloroquine Plaquenil. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Vasculitis 5 Drugs to Control This Mysterious Blood Vessel.. The study is based on hydroxychloroquine sulfate and diphenhydramine hydrochloride the active ingredients of Plaquenil and Benadryl, respectively, and Plaquenil and Benadryl the brand names. Other drugs that have the same active ingredients e.g. generic drugs are not considered. Contact Dermatitis. 1997 Mar;363147-9. Skin reactions to hydroxyzine. Michel M1, Dompmartin A, Louvet S, Szczurko C, Castel B, Leroy D. Hydroxychloroquine oral tablet is available as a brand-name drug and a generic drug. Brand name Plaquenil. Hydroxychloroquine comes only as a tablet you take by mouth. Hydroxychloroquine is used to treat malaria, lupus erythematosus, and rheumatoid arthritis.