Tea & wellness
Caffeine amounts, L-theanine, and tea-versus-coffee comparisons — written from published research themes, for informational purposes.
Showing all · 5 guides
-
L-theanine Green tea Matcha Tea vs coffeeL-Theanine in Tea: How Much, by Type, and Brewing Tips
L-theanine amounts by tea type (green, white, oolong, black), how brewing temperature and steeping shift the number, and a practical leaf calculator.
-
Green tea Matcha L-theanineTea and Meditation: How to Build a Mindful Tea Practice
How L-theanine in tea supports relaxed focus, which teas suit meditation, and a step-by-step breath-and-sip practice you can start today.
-
Caffeine L-theanine Tea vs coffeeTea and Sleep: Caffeine Timing, Evening Teas, and a Bedtime Ritual
Learn how caffeine timing, decaf and herbal choices, L-theanine, and a simple bedtime tea ritual can fit an evening routine.
-
Caffeine Matcha Green tea L-theanineMatcha Caffeine: Dose by Form, Gram, and Prep
How much caffeine is in matcha by gram, usucha, koicha, latte, and culinary scoop — plus scale protocol and a dose ladder. Informational ranges only.
-
Caffeine Matcha Green teaCaffeine by Tea Type: mg Chart & Brew Variables (2026)
Caffeine mg by tea type — matcha, black, oolong, green, white, pu-erh — plus brew variables that change the number. 2026 research summary.
Tools
Tools for ranges
Caffeine (and tea vs coffee) plus matcha dose estimates — research-style, for informational purposes.