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Drug Half-Life Calculator
Calculate remaining medication concentration and elimination over elapsed time
Pharmacokinetic Formula: $A(t) = A_0 \times (1/2)^{(t / t_{1/2})}$. Typically, a drug is considered nearly fully eliminated (over 97%) after 5 to 6 half-lives. Enter drug parameters below.
Pharmacokinetic Parameters Input
Calculation Results
⚠️ Not medical advice. For clinical pharmacology and educational reference only. Drug elimination rates, dosing intervals, and half-life kinetics vary by patient metabolism and must be evaluated by a qualified physician or pharmacist.