Half-Life
t½定義
The time required for the plasma concentration of a drug to decrease by 50%. Half-life determines how often a medication needs to be dosed — drugs with shorter half-lives require more frequent dosing to maintain therapeutic levels.
例
Ibuprofen has a half-life of about 2 hours, which is why it's typically taken every 4-6 hours.
関連用語
ガイドでの言及
-
What Is a Drug's Half-Life?Half-life explains how long a drug stays active in your body and determines how often you need to take it. …
-
How Statins Lower CholesterolStatins are among the most prescribed medications in the world. They work by blocking a key enzyme in cholesterol production, …
-
How Insulin and Diabetes Drugs WorkDiabetes treatment encompasses a wide range of drugs — from insulin that replaces a missing hormone to newer agents that …
-
Medications While BreastfeedingHow drugs pass into breast milk, which factors determine infant exposure, and how to find reliable information to support safe …
-
Long-Acting Injectable MedicationsLong-acting injectables transform daily pills into monthly or even biannual doses. Learn how these formulations work, which drugs use them, …