The article entitled “Prevalence of Meperidine Use in Older Surgical Patients” by Kornitzer et al1 has brought a very important issue about the adverse effects of meperidine hydrochloride use in older surgical patients with or without compromised renal function. The authors have quoted a book of 1739 pages, without any reference to page or chapter, published by the American College of Surgeons2 saying that meperidine is “suboptimal analgesia for postoperative patients.”