It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. The mainstay of treatment for malaria is chloroquine Hydroxy chloroquine 400 mg What is hydroxychloroquine Plaquenil, Plaquenil Sulfate, Quineprox? Hydroxychloroquine is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Description and Brand Names. Drug information provided by IBM Micromedex US Brand Name. 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. Plaquenil received an overall rating of 5 out of 10 stars from 4 reviews. See what others have said about Plaquenil, including the effectiveness, ease of use and side effects. Plaquenil Reviews. Hydroxychloroquine comes as a tablet to take by mouth. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. Information on plaquenil Plaquenil - Side Effects, Uses, Dosage, Overdose., Hydroxychloroquine Oral Route Description and Brand Names. Tylenol plaquenilTaking plaquenil and carafate PLAQUENIL This medicine is a white, dog-bone, film-coated, tablet imprinted with "PLAQUENIL". Plaquenil Oral Uses, Side Effects, Interactions.. Plaquenil Reviews Everyday Health. Plaquenil What You Need to Know - Kaleidoscope Fighting Lupus. Plaquenil tablets are white, to off-white, film coated tablets imprinted “Plaquenil” on one face in black ink. Each tablet contains 200 mg hydroxychloroquine sulfate equivalent to 155 mg base. Bottles of 60 tablets with child resistant closure NDC 59212-562-60. People who take an overdose of Plaquenil may experience effects such as, but not limited to Headaches. Drowsiness. Vision changes. Seizures. Cardiac arrest. An irregular heart rhythm arrhythmia. Loss of life. PLAQUENIL tablets are white, to off-white, film coated tablets imprinted “PLAQUENIL” on one face in black ink. Each tablet contains 200 mg hydroxychloroquine sulfate equivalent to 155 mg base. Each tablet contains 200 mg hydroxychloroquine sulfate equivalent to 155 mg base.