Stevia (Stevia rebaudiana) is classified as a natural sweetener and herbal remedy. It is commonly used as a sugar substitute due to its sweet-tasting compounds, such as stevioside and rebaudioside, which are many times sweeter than sugar but contain little to no calories. Stevia is also known for its potential health benefits, including helping to regulate blood sugar levels, support weight management, and offer antioxidant properties. It is often used in beverages, food, and as a sugar alternative in recipes.