What is the primary goal of a drug's distribution phase?

The primary goal of a drug's distribution phase is to reach the target site. This phase occurs after a drug has been administered and absorbed into the bloodstream, where it then moves throughout the body, permeating various tissues and organs. The effectiveness of a drug largely depends on its ability to reach the intended site of action, where it can exert its therapeutic effects.

Distribution is influenced by several factors, including blood flow to tissues, the drug's binding to plasma proteins, and the permeability of cell membranes. By reaching the target site, the drug can interact with specific receptors or biological pathways to produce the desired outcome. Understanding this phase is crucial for determining the onset of action and therapeutic efficacy of the drug.