What is the role of a drug vehicle?

The role of a drug vehicle is to act as an inactive substance that facilitates the transportation and delivery of a drug to its intended site of action. This vehicle ensures that the active ingredient is effectively absorbed by the body. It can help stabilize the drug, improve its solubility, and enhance the overall bioavailability of the therapeutic agent. Various forms of drug vehicles are used, including liquids, gels, creams, and solid carriers, depending on the desired route of administration and formulation requirements.

In this context, while other options mention important aspects related to pharmaceuticals—such as drug potency, metabolism monitoring, and release mechanisms—they do not accurately define the primary role of a drug vehicle. The essence of a drug vehicle lies in its function as a medium that carries an active substance rather than altering its potency or characteristics directly.