Step 1: Concept
A hospital formulary is a continually revised compilation of pharmaceuticals that reflects the clinical judgment of the medical staff.
Step 2: Meaning
While it improves efficiency and reduces costs, it limits the variety of brands available within the institution.
Step 3: Analysis
Options A, B, and C are actually advantages of a formulary. The main drawback is that it restricts a physician's autonomy, forcing them to use the brands selected by the committee rather than their personal preference.
Step 4: Conclusion
Thus, the deprivation of a physician's brand choice is a recognized disadvantage.
Final Answer: (D)