The United States Pharmacopeia (USP) is considering a revision to its definition of controlled room temperature (CRT), aligning it with the ranges recommended by the Japanese Pharmacopoeia (JP), European Pharmacopoeia (EP), and World Health Organization (WHO). A Stimuli article published in the current Pharmacopeial Forum, PF 51(3), highlights that the existing discrepancy between USP’s CRT definition (20°–25°C) and the JP, EP, and WHO standards (15°–25°C) leads to inconsistencies in drug storage practices and increased energy consumption.