Hard capsule supplements consist of a shell made from gelatin or plant-based materials and are composed of two main parts: the capsule body and the cap. These capsules are typically used to contain powdered extracts, which require some time to dissolve before being absorbed by the body. The amount of substance that can be packed into a hard capsule is generally less than that of soft gels, meaning that multiple capsules may need to be taken to achieve the desired dosage.