Medicinal chemistry is a branch of chemistry that focuses on developing pharmaceutical drugs. Professionals in this field often research chemicals, apply the principles of biology and biochemistry when synthesizing new chemicals, explore treatment options, analyze disease samples, and otherwise work to support the health of the general public. Most medicinal chemistry takes place in research labs, but drug candidates that get far enough in the development process may go through testing outside the development lab. Medicinal chemists often participate in these trials to monitor effects and provide care as needed. You can find most medicinal chemistry jobs with pharmaceutical companies, but a few jobs exist with government regulatory agencies.