hydroxychloroquine 200 mg tab is a medication originally developed to prevent and treat malaria. Today, it’s more commonly used to manage autoimmune conditions like rheumatoid arthritis and lupus. It works by modulating the immune system—specifically, it reduces inflammation by interfering with the communication between immune cells. Hydroxychloroquine also prevents the activation of certain pathways that cause tissue damage in autoimmune diseases. Although not a cure, it helps control symptoms such as joint pain, swelling, and fatigue. It’s generally well-tolerated, but long-term use may require regular eye exams to monitor for rare retinal side effects. Always use it under medical supervision.