A pharmacokinetic (PK) simulator that visualizes how a compound builds up over time. It models steady-state concentrations — the point where intake and elimination are balanced. Use it to understand how dose size and frequency affect relative concentration levels over 8 weeks.

The Y-axis shows relative plasma concentration, the X-axis shows time in days. Peaks = highest concentration after each dose. Troughs = lowest before the next dose. A flatter curve means more stable levels. Steady state typically arrives after 4–5 half-lives.

When fluctuation is ≤20%, you'll see the gold "Optimized Stability" badge. This means levels stay relatively flat between doses. Achieved by smaller, more frequent doses rather than larger, less frequent ones.

Click "+ Compare" to overlay a second protocol (green line). Compare weekly vs daily dosing, different compounds, or higher-dose/less-frequent vs lower-dose/more-frequent strategies side by side.