The variation in sensitivity of response to different doses of a drug in different individuals is obtained from the dose-response curve. A dose-response curve is a graphical representation that illustrates the effect of various doses of a drug on a group of individuals. This curve helps determine:
- Effective Doses: The minimum dose that produces the desired effect.
- Toxic Doses: The dose at which adverse effects occur.
- Potency: The amount of drug required to produce an effect of a given intensity.
- Efficacy: The maximum effect a drug can achieve, regardless of dose.
Such curves enable researchers to understand the variability in drug response across a population, assess the therapeutic window, and guide dosage recommendations.