Capsule are particularly well-suited for vitamins and minerals, as well as plant powdered extracts. Consists of two prefabricated halves. The lower half which is somewhat smaller in diameter and called the “body” is filled, while the “cap” larger in diameter is placed onto the filled lower half like a cap. When it comes to dietary supplements, size 1, 0 through to 00 are most commonly used. Depending on the density of the powder, hard capsules can generally contain between 290 and 850 mg of material.