Which amendment allowed for verbal prescriptions to be given over the phone?

The Durham-Humphrey Amendment of 1951 is pivotal in the context of verbal prescriptions because it established a distinction between prescription and over-the-counter (OTC) medications. This amendment allowed for prescriptions to be communicated verbally, including through the telephone, which facilitated better patient access to medications when face-to-face interaction was not feasible. The amendment was essential in expanding the pharmacist's role and ensuring timely patient care, especially in situations where immediate access to medications was necessary.

The other amendments and acts, such as the Kefauver-Harris Amendment of 1962, primarily focused on drug efficacy and safety, while the Controlled Substances Act establishes regulatory controls for narcotics and other controlled substances. The Drug Approval Act pertains mainly to the processes involved in drug approval and doesn’t directly address prescription methods. Therefore, the Durham-Humphrey Amendment is the relevant legislation that specifically allowed for verbal prescriptions to be effectively communicated over the phone.