What pharmacokinetic condition increases both intensity and duration of a medication's effect?

The condition that increases both the intensity and duration of a medication's effect is characterized by rapid absorption along with delayed elimination. When a drug is rapidly absorbed, it quickly enters the systemic circulation, leading to a swift onset of its therapeutic effects. This quick absorption allows for higher peak plasma concentrations of the medication, which can enhance its efficacy initially.

On the other hand, if the elimination of the drug from the body is delayed, the medication remains in circulation for a longer period. This prolonged presence in the bloodstream not only helps sustain the drug’s therapeutic effects but can also intensify those effects over time due to the continued availability of the drug to exert its influence on target tissues.

In summary, rapid absorption facilitates a fast therapeutic onset with potentially higher peak concentrations, while delayed elimination sustains the drug's effects, ultimately enhancing both the intensity and the duration of the medication's action.