Drug discovery is the process by which potential drugs are discovered or designed. In the past most drugs have been discovered either by isolating the <answer>active ingredient</answer> from traditional remedies or by serendipitous discovery. Modern biotechnology often focuses on understanding the metabolic pathways related to a disease state or pathogen, and manipulating these pathways using molecular biology or biochemistry. A great deal of early-stage drug discovery has traditionally been carried out by universities and research institutions.
Most drugs have been found by isolating what from traditional remedies?
active ingredient