Drug Half-Life Calculator
Calculate how long it takes for medication to leave your system based on drug half-life and elimination time.
About Drug Half-Life
The half-life of a drug is the time required for the concentration of the drug in the body to be reduced by 50%. This information is crucial for determining dosing schedules and understanding how long a medication remains active in your system.
Key Points:
- After 1 half-life: 50% of drug remains
- After 2 half-lives: 25% of drug remains
- After 3 half-lives: 12.5% of drug remains
- After 4 half-lives: 6.25% of drug remains
- After 5 half-lives: ~3% of drug remains (considered eliminated)