concentration-time curve

A concentration-time curve is a graph that shows how the levels of a drug or substance in the body change over time after administration. It typically rises quickly as the drug is absorbed, peaks at the highest concentration, then decreases as the body processes and eliminates it. This curve helps understand how long a drug stays effective and at what doses, aiding in optimal medication planning. Essentially, it provides a visual way to track the journey of a substance in the body from intake to clearance.