Guides

L-theanine guides

Clear, practical guides to L-theanine: the different formats, the research on L-theanine and coffee, and how to choose a product.

What are L-theanine pouches and how do they work?

What's inside L-theanine pouches, how to use one, how they compare with capsules, and what to check when buying.

What studies on L-theanine with caffeine found, how much is in your cup, and how people combine the two.

Capsules, powder, drinks and pouches compared, plus how much people take and what to look for on the label.