Drug Half-Life Calculator
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Drug Half-Life Calculator

Calculate drug elimination kinetics and dosing intervals

About Drug Half-Life

Drug half-life (t½) is the time required for the concentration of a drug to decrease by 50%. It's crucial for determining dosing intervals, time to steady state, and drug elimination.

Drug Information

Half-Life Results

Important Information

  • Elimination Half-Life: Time for drug concentration to decrease by 50% during elimination phase
  • Distribution Half-Life: Time for drug to distribute from plasma to tissues
  • Terminal Half-Life: Final elimination phase half-life
  • Effective Half-Life: Apparent half-life considering all elimination processes
  • Steady State: Reached after 4-5 half-lives of consistent dosing
  • Dosing Interval: Typically 1-2 half-lives for most drugs
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