Boehringer Ingelheim Chemicals (BIC) is active in active ingredients. BIC is the chemical manufacturing arm of Boehringer Ingelheim Corporation, the US division of German pharmaceutical company Boehringer Ingelheim. BIC is a leading maker of active pharmaceutical ingredients and drug intermediates. The company operates a DEA-approved facility where it makes a range of chemicals from controlled substances such as methadone to cough medicine ingredient guaifenesin. BIC supplies other divisions of Boehringer Ingelheim, as well as third parties in the pharmaceutical and food industries. BIC is one of five pharmaceutical chemical production sites Boehringer Ingelheim operates worldwide.