Tea
Caffeine in Green Tea
28mg
per 8 oz
7% of FDA daily max
Is that a lot?
Green Tea is 7% of the FDA’s recommended daily maximum, in a single 8 oz.
Green Tea
Espresso
Red Bull
Coffee
FDA daily max · 400mg
Before bed
When can I drink Green Tea and still sleep?
Your Green Tea cutoff
You drink it at
Bedtime
Green Tea · 28 mg · assuming an average ~5 h half-life
At bedtime
9 mg
close to optimal
Latest safe Green Tea: 11:00 PM
How much caffeine is in Green Tea?
Green tea is a light lift at about 28 mg of caffeine per cup, well under a third of a coffee's load. Paired with its calming L-theanine, the energy it gives tends to feel smooth rather than sharp.
| Serving | Caffeine | Sugar |
|---|---|---|
| 8 oz | 28 mg | 0 g |
Range ~20–45 mg.
Will Green Tea affect your sleep?
Starting at 28 mg, green tea is already below the 50 mg sleep-threshold, so it clears quickly and rarely troubles bedtime. It's one of the easier caffeinated drinks to enjoy in the evening.
Source: USDA FoodData Central