Green tea contains caffeine. How much a serving supplies depends on the amount and type of tea, brewing method and volume actually drunk. A cup is not a fixed unit for a reliable comparison with coffee.
Which details help?
| Factor | Practical significance |
|---|---|
| Amount of leaves | A larger quantity may supply more caffeine |
| Temperature and brewing time | Affect how much passes from the leaves into the infusion |
| Serving actually drunk | Large mugs and repeated infusions count too |
| Other sources | Include coffee, cola, energy drinks and caffeine-containing preparations |
Comparison with coffee requires real servings
A mild tea infusion can supply less caffeine than a strong coffee. Drink names alone do not establish a fixed ranking, however. Decaffeinated tea is not automatically completely caffeine-free either. Without specific product or analytical data, an exact milligram figure remains uncertain.
L-theanine does not cancel caffeine
Other tea constituents may affect subjective experience. Feeling more calmly alert does not, however, mean that sleep, restlessness or palpitations remain unaffected. With sleep problems, consider timing and total daily intake.
Matcha needs separate consideration: the leaf powder is consumed with the drink. More water or milk does not remove the caffeine already contained in the powder serving.
Distinguish drinks from extracts
A green tea capsule is not the same as a cup of tea. Rare liver injuries have been reported with concentrated extracts; this does not mean every tea infusion carries that risk in the same way. If you take regular medication, discuss combinations with a professional.
Seek individual advice during pregnancy and breastfeeding, or with pronounced caffeine sensitivity. If a new racing heart or significant symptoms develop, do not simply counter them with further stimulating products.
Frequently asked questions
Is green tea always weaker than coffee?
No. The actual servings and preparations need comparison.
Does milk make matcha caffeine-free?
No. It dilutes the drink but does not remove the caffeine in the powder serving.
