Dose-Response Curve Generator
Sigmoid Emax (Hill) equation with multiple curves
Curves
Example Drugs
Linear Scale
No data – adjust parameters or add curves.
Black dots mark each curve's true EC₅₀ point (baseline + Emax/2) — not a fixed y = 50, since baseline and Emax vary per drug.
Log-Dose Scale
No data – adjust parameters or add curves.
The classic symmetric sigmoid shape only appears on a log concentration axis — this is the standard way dose-response curves are presented.
Hill Equation (Sigmoid Emax Model)
E = E₀ + (Emax·Cⁿ) / (EC₅₀ⁿ + Cⁿ)
- E₀ (Baseline) — response with no drug present
- Emax — maximal drug-attributable effect
- EC₅₀ — concentration producing half of Emax
- n (Hill coefficient) — steepness of the curve