Research Neuropharmacology is concerned with the elucidation and discovery of the mechanisms of action and interaction of drugs that influence nerve tissue. A branch of the profession also works with toxins that are designed to kill by action on the nerves, such as insecticides and nerve 'gasses' and with the development of antidotes and treatments for these toxins. Research neuropharmacology is also concerned with the use of drugs as tools to investigate nerve and brain physiology and metabolism. In pharmaceutical environments, research precedes development in the design of new drugs and the modification of existing drugs. Research neuropharmacology is the leading edge of the profession.