Tea
Caffeine in Kombucha
15mg
per 8 oz
4% of FDA daily max
Is that a lot?
Kombucha is 4% of the FDA’s recommended daily maximum, in a single 8 oz.
Kombucha
Green tea
Espresso
Red Bull
Coffee
FDA daily max · 400mg
Before bed
When can I drink Kombucha and still sleep?
Your Kombucha cutoff
You drink it at
Bedtime
Kombucha · 15 mg · assuming an average ~5 h half-life
At bedtime
5 mg
close to optimal
Latest safe Kombucha: 11:00 PM
How much caffeine is in Kombucha?
Kombucha carries a small amount of residual caffeine from its tea base, around 15 mg per 8 oz, though it varies by brand. The fermentation lowers the caffeine, leaving just a faint nudge.
| Serving | Caffeine | Sugar |
|---|---|---|
| 8 oz | 15 mg | 4 g |
Fermented tea; residual caffeine ~10–25 mg, varies by brand and tea base.
Will Kombucha affect your sleep?
At about 15 mg, kombucha sits well below the 50 mg threshold and clears quickly, so it has little effect on sleep. It's generally a gentle option, even later in the day.
Source: Brand nutrition (range)