Peptide half-life calculator
Model first-order elimination, accumulation, dose interval, and rough time to steady state from half-life.
Uses a simple first-order elimination model. The dose is normalized to 1.0 so the output explains relative accumulation, not clinical exposure.
Enter a half-life greater than zero hours.
This is a general pharmacokinetic visualization from values you provide. It does not account for route, bioavailability, individual response, organ function, or clinical risk.
How the math works
The model assumes first-order elimination, where the body clears half of what remains in each half-life. When you dose again before the previous dose has fully cleared, the leftover fraction stacks with the new dose, and levels climb until what you add each interval equals what clears between doses. That balance point is steady state, and it arrives after roughly five half-lives on an unchanged schedule.
The gap between half-life and dose interval sets the shape of the curve. A compound dosed far more often than its half-life accumulates well above a single dose and holds a flat line, while one dosed far less often barely accumulates and swings widely between peak and trough.