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. Maqular degeneration plaquenil Symptoms of hydroxychloroquine retinopathy Glioblastoma chloroquine 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. This medicine is not effective against all strains of malaria. The recommended hydroxychloroquine dosage for treating rheumatoid arthritis is 400 to 600 mg daily. For the treatment of lupus, the suggested dose is 400 mg once or twice daily. To prevent malaria in adults traveling to an area of high risk, the recommended dosage is 400 mg once weekly, starting two weeks before anticipated exposure. Hydroxychloroquine Plaquenil, chloroquine Aralen, and quinacrine Atabrine are medications that were originally used to prevent or treat malaria. However, during World War II it was also found that these medications were effective in treating the symptoms of lupus. 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. Plaquenil malaria prevention Hydroxychloroquine Plaquenil, Hydroxychloroquine Dosage - Malaria Home Page Plaquenil helping intestinal inflammationChloroquine hemozoinHydroxychloroquine plus baflomycin lysosome inhibitorPlaquenil detoxing Hydroxychloroquine also known as hydroxychloroquine sulfate is an arthritis medicine that also can be used to prevent malaria. Medicines for the Prevention of Malaria While Traveling.. Treating Lupus with Anti-Malarial Drugs Johns Hopkins.. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Chloroquine has long been used in the treatment or prevention of malaria from Plasmodium vivax, P. ovale, and P. malariae, excluding the malaria parasite Plasmodium falciparum, for it started to develop widespread resistance to it. According to the American College of Rheumatology, hydroxychloroquine Plaquenil, is a “disease-modifying anti-rheumatic drug DMARD,” meaning that it helps reduce the pain and swelling that come with arthritis. It can also reduce the incidence of joint damage, thus lessening the risk of developing a long-term disability from complications of RA. The recommended Plaquenil dosage for malaria prevention is 400 mg once weekly, starting two weeks before the anticipated exposure. The usual starting dosage for treating lupus is 400 mg once or twice a day, and the recommended starting dose for the treatment of rheumatoid arthritis is 400 to 600 mg daily.