Gelatin capsules are small, cylindrical containers made from gelatin, a substance derived from animal collagen. They are commonly used to encase dietary supplements, vitamins, and medications, making them easier to swallow. The capsules dissolve in the stomach, releasing their contents for absorption by the body. These capsules come in two main types: hard and soft. Hard capsules are typically used for powdered substances, while soft capsules are often used for liquids. Gelatin capsules are popular because they are tasteless and odorless, providing a convenient way to take supplements without the unpleasant taste of some ingredients.