What is the half-life of caffeine?

The half-life of caffeine is about 5-7 hours. That means, if you drink 200 mg of coffee at 2 in the afternoon, 100 mg of it is still active in your body by 7-9 at night.

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Kafe mpe mpɔngi

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Medically Reviewed:

Dr. Priya Sammani, MBBS, PG Dip. FM

Updated on: April 2026

❓ Frequently Asked Questions (FAQ)

Demi-vie ya caféine ezali nini?

Demi-vie ya caféine ezali soki 5-7 heures. Yango elingi koloba, soki omeli 200 mg ya café na 2 heures ya midi, 100 mg na yango ezali kaka active na nzoto na yo na 7-9 na butu.

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Medical Disclaimer: These calculators are provided for educational purposes only and are not a substitute for professional medical advice. Always consult a qualified physician regarding any health concerns..