Pharmaceutical technology is the application of a field of knowledge or technology to pharmaceuticals, pharmacology, and therefore the pharmaceutical industry. It is also known as the science of dosage design. There are many chemicals with pharmacological properties, but special measures are required to ensure that appropriate amounts of treatment can be reached at the site of action. Pharmaceuticals help link the preparation of drugs to their distribution and availability in the body. Pharmaceuticals involves the preparation of pure pharmaceutical substances in dosage forms. A branch of a pharmacy that includes a pharmacy that dispenses, manufactures and dispenses pharmaceutical products.