In the report “Single-dose pharmacokinetics of orally and rectally administered misoprostol in adult horses” (Am J Vet Res 2019;80:1026–1033), the units for area under the concentration-versus-time curve (AUCall) and AUC0–∞ in the abstract and Table 2 should be (pg·s/mL) and not (pg·h/mL).