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.

Jesyon dòmi

Kafe ak dòmi

Gade ki jan kafe ta nan mitan lannwit deranje dòmi ou

Medically Reviewed:

Dr. Priya Sammani, MBBS, PG Dip. FM

Updated on: April 2026

❓ Frequently Asked Questions (FAQ)

Ki sa ki mwatye lavi a nan kafeyin?

Mwatye lavi a nan kafeyin se apeprè 5-7 èdtan. Sa vle di, si ou bwè 200 mg kafe nan 2 nan apremidi a, 100 mg li toujou aktif nan kò ou pa 7-9 nan mitan lannwit.

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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..