Which term is used to describe the maximum dose of a drug that can be safely administered?

The term that accurately describes the maximum dose of a drug that can be safely administered is referred to as the "Dosage Ceiling." This term defines the upper limit of dosage that is considered safe for a patient, beyond which the risk of adverse effects or toxicity may increase significantly.

While the "Therapeutic Index" is an important concept that provides a ratio comparing the toxic dose to the therapeutic dose of a drug, it does not directly indicate the maximum dose safe for administration. It helps in determining the safety margin of a drug but is not specifically defined as a fixed maximum dose.

"Maximum Allowable Dose" could imply a similar meaning to dosage ceiling; however, it is not a commonly used term in pharmacology.

The "Minimum Effective Dose" refers to the smallest amount of a drug required to achieve the desired therapeutic effect, which is conceptually distinct from discussing the maximum safe dosage.

Thus, understanding these definitions clarifies the applicable terminology pertaining to medication dosing and safety in a clinical setting.