The hard gelatin capsule consists of a base or body and a shorter cap, which fits firmly over the base of the capsule. For human use, eight sizes of capsules are available. The capacity of each size varies according to the combination of drugs and their apparent densities. Capsules are available as clear gelatin capsules or in a variety of colors. The pharmacist can use the different colored capsules to distinguish two capsule formulations for the same patient, or to encapsulate unattractive ingredients. The pharmacist can add a dye to the powder before filling a clear capsule to impart a color for identification or esthetics.