Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Chloroquine phosohate Chloroquine alcohol use 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. Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. 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. Use WebMD’s Pill Identifier to find and identify any over-the-counter or prescription drug, pill, or medication by color, shape, or imprint and easily compare pictures of multiple drugs. Hydroxychloroquine may also be used for purposes not listed in this medication guide. Hydroxychloroquine is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. White oval pill plaquenil Hydroxychloroquine Oral Uses, Side Effects, Interactions., Plaquenil Hydroxychloroquine - Side Effects, Dosage. Plaquenil mid back painHydroxychloroquine myositis Dosage for Plaquenil. The adult dose of Plaquenil to suppress malaria is 400 mg on the same day each week. The pediatric weekly suppressive dosage is 5 mg/kg of body weight. The adult dose of Plaquenil to treat an acute attack of malaria is an initial dose of 800 mg followed by 400 mg in six to eight hours and 400 mg for two more days. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. Pill Identification Tool - WebMD. OVAL WHITE AC384 - hydroxychloroquine sulfate tablet Pill.. Compare prices, print coupons and get savings tips for Hydroxychloroquine Generic Plaquenil and other Rheumatoid Arthritis, Lupus, and Malaria drugs at CVS, Walgreens, and other pharmacies. Prices start at $18.60 Hydroxychloroquine Oral tablet drug summary. Find medication information including related drug classes, side effects, patient statistics and answers to frequently asked questions. Visit for more details. For those of you who take calcium tablets, I saw on there is a facility to check drug interactionsthat taking Plaquenil at the same time with calcium could reduce the efficacy of Plaquenil.