Ganoderma lucidum, commonly known as the reishi mushroom, is a medicinal fungus that has been used in traditional medicine for thousands of years. It is often referred to as the "mushroom of immortality" due to its potential health benefits. This mushroom is typically found in tropical and subtropical regions, growing on decaying wood. The reishi mushroom is known for its rich content of bioactive compounds, including triterpenes and polysaccharides, which may support immune function and overall health. It is available in various forms, such as powders, capsules, and teas, making it accessible for those interested in its potential therapeutic properties.