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⏳ What Drug Half-Life Means
How long a drug stays in your system — and why it matters.
What is drug half-life
- A drug's **half-life** is the time it takes for the concentration of a medication in your blood to decrease by half.
- It does not mean the drug is completely gone after two half-lives.
- Instead, it measures how quickly your body processes and clears the substance.
- Doctors use this value to understand how a medicine behaves inside you.
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