The drug and the excipients are enclosed in either a soft or hard soluble shell. Generally, the capsules are the solid preparations. The Shell which is used for closing the drug are made of gelatin or the polymeric substances. The capsules are tasteless, odourless, elegant and easy to swallow. They are either soft capsules or hard capsules where the soft capsules possess a flexibility and plasticized gelatin film while the hard capsule composed of two pieces, the shorter piece called cap and longer piece called body. Keywords: capsules, soft gelatin capsule, hard gelatin capsule, shell.