It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Side effects of long term use of hydroxychloroquine Chloroquine resistant falciparum malaria treatment Should i take hydroxychloroquine sulfate Plaquenil 200 mg prices For patients taking hydroxychloroquine to prevent malaria Your doctor may want you to start taking this medicine 1 to 2 weeks before you travel to an area where there is a chance of getting malaria. This will help you to see how you react to the medicine. The risk may also be higher with some doses of hydroxychloroquine, if you use hydroxychloroquine for longer than 5 years, or if you take certain other drugs like tamoxifen. Call your doctor right away if you have any eyesight changes like blurred or foggy eyesight, trouble focusing or reading, or trouble seeing in dim light. Hydroxychloroquine belongs to a group of medicines known as antimalarials. It works by preventing or treating malaria, a red blood cell infection transmitted by the bite of a mosquito. However, this medicine is not used to treat severe or complicated malaria. Today, it is used to treat rheumatoid arthritis, some symptoms of lupus, childhood arthritis (or juvenile idiopathic arthritis) and other autoimmune diseases. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. Hydroxychloroquine what is it used for Hydroxychloroquine MedlinePlus Drug Information, Hydroxychloroquine Indications, Side Effects, Warnings. Hydroxychloroquine midePlaquenil and itchingRcophth hydroxychloroquine Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. Today, it is used to treat rheumatoid arthritis, some symptoms of lupus, childhood arthritis or juvenile idiopathic arthritis and other autoimmune diseases. It is not clear why hydroxychloroquine is effective. Hydroxychloroquine Plaquenil. Hydroxychloroquine Oral Route Description and Brand Names.. RA and Hydroxychloroquine How Effective is it for.. 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. Hydroxychloroquine belongs to a group of medicines known as antimalarials. Combined with other medications, hydroxychloroquine is often used as part of a treatment plan for a host of auto-immune diseases, such as rheumatoid arthritis and lupus. It belongs to a disease-modifying antirheumatic drug classification. Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more.