"Compounding has been traditionally defined as a process where a pharmacist or a physician combines, mixes, or alters ingredients to create a medication tailored to the needs of an individual patient. Traditionally compounded drugs (CDs) are made in response to an individual prescription from a licensed health provider in the context of a pharmacist's and health care professional's relationship with a specific patient. […] This report provides background information on CDs and nontraditional compounding pharmacies relevant to policy discussions. This includes an overview of the 2012 fungal meningitis outbreak; recent recalls of compounded drugs; definitions of traditional compounding and nontraditional compounding; information on the CDs produced and by whom; information on the demand for nontraditional compounding, including the role of shortages of sterile injectable drugs, hospital outsourcing, and patient and provider demand; and information on adverse events involving compounded drugs."
CRS Report for Congress, R43082