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. Chloroquine is a Plaquenil side effects menstrual Plaquenil - an immunosuppressant used to treat malaria. Pharmacological action. Plaquenil reduces inflammation, inhibits malaria parasites, has a strong immunosuppressive effect inhibits the activity of the immune system. The active substance of the drug - hydroxychloroquine. 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. ›. Antimalarial drugs in the treatment of rheumatic disease View in Chinese ago. Three of these drugs are now primarily used due to their safety profile. Chloroquine and hydroxychloroquine HCQ are 4-aminoquinoline derivatives. Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. Is plaquenil a immunosuppressant Plaquenil oral Reviews and User Ratings Effectiveness., Plaquenil Uses, Dosage & Side Effects - Can you overdose on hydroxychloroquineChloroquine treatment Plaquenil hydroxychloroquine is considered an older DMARD disease modifying anti-rheumatic drug. Plaquenil was actually first classified as an antimalarial drug, but it is also used to treat certain rheumatic and autoimmune conditions which are unrelated to malaria. Taking Plaquenil for Rheumatoid Arthritis. UpToDate. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. I have been on Plaquenil for the past eight months and I am always sick. I can't count how many times in that time span I got sick but all of my doctors refer to the plaquenil as an immunosuppressant. Since I have been on RA meds it takes me twice as long to get healthy again from an illness. Medscape - Indication-specific dosing for Plaquenil hydroxychloroquine sulfate, frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. 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.