The US Pharmacopeial Convention (USP) develops standards for the identity, quality, strength, and purity of medicines, dietary supplements, and food ingredients that may be used in compounding preparations. These standards in particular are relevant to compounding pharmacists.
USP 795 provides guidance for non-sterile preparations that are compounded in health care settings. It describes categories of compounding (simple, moderate, complex), defines concepts such as beyond-use date and stability, and provides criteria for compounding pharmacists to follow in preparing various drug preparations.
McMahan Pharmacy provides non-sterile compounding prescriptions such as capsules, suspensions, ointments, creams, or gels