A chemically altered version of a drug's active ingredient — for example, semaglutide sodium or semaglutide acetate rather than plain semaglutide. These salt forms have not been studied in humans the way the approved drug has, and the FDA has been explicit that they don't qualify for legitimate compounding. If you see "sodium" or "acetate" attached to a compounded GLP-1, treat it as a red flag.
Related terms: Compounded medication · Active pharmaceutical ingredient (API) · 503A pharmacy