Retatrutide (LY3437943), a GLP-3 RT pharmaceutical compound designed for metabolic disorders, is entering Canadian agricultural ecosystems through biosolids, wastewater irrigation, and manure from treated livestock. This triple-receptor agonist persists in soil longer than many conventional pharmaceuticals, and early testing in Ontario and British Columbia has detected measurable concentrations in fields receiving municipal biosolids applications. For Alberta farmers, particularly those maintaining organic certification or transitioning to regenerative practices, understanding this …