A pharmaceutical capsule is an easy way to take medication. Capsules may contain powder, liquid or oil. The outer shell is made of hard or soft gelatin. Capsules come in different shapes and colors to identify dose or what company made them. They are also available as timed release which work over a period of time. Capsules should usually be taken whole. Always consult a pharmacist or desk reference before opening a capsule. Capsules should also not be crushed without first checking to see if it is safe. 