Ask an expert: Does green tea have caffeine?

• Expert opinion from Ala’a Eideh
• Expert opinion from Toni Tran
• Expert opinion from Drew Hemler

Green Tea image

Expert opinion from Ala’a Eideh

All types of tea contain caffeine. Black tea contains higher amounts per serving compared to green tea. So in 1 small cup of back tea you get about 50 mg of caffeine. In 1 small cup of green tea you get about 28 mg caffeine. Your recommended intake per day should not exceed 400 mg.

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Expert opinion from Toni Tran

Caffeine is a naturally occurring chemical found in tea leaves. The average amount of caffeine in an 8-oz serving of green tea is between 30 to 50 mg. The caffeine amount depends on several factors such as the variety of tea plants, growing conditions, and processing and brewing methods.

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Expert opinion from Drew Hemler

Yes. 8 ounces (240 mL) of brewed green tea contains about 28 mg of caffeine. Up to 400 mg of caffeine a day is safe for most adults.

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This is for information purpose only, and should not be considered as a substitute for medical expertise. These are opinions from an external panel of individual doctors, and not to be considered as opinion of Microsoft. Please seek professional help regarding any health conditions or concerns.