09/10/2026
A Closer Look at L-Theanine in CaffiClear®
If you've looked at what's inside CaffiClear, you'll have seen L-Theanine listed as one of the ingredients in the formula.
It's an ingredient often associated with tea and caffeine, but what exactly is L-Theanine, where does it come from and why has it attracted so much interest?
What Is L-Theanine?
L-Theanine is an amino acid found naturally in tea leaves, particularly green tea.
Tea naturally contains both L-Theanine and caffeine, although they are two very different compounds. This natural relationship is one of the reasons L-Theanine is frequently discussed and researched alongside caffeine.
In CaffiClear, L-Theanine is provided through green tea extract, with each two-capsule serving providing 200mg of L-Theanine.
Why Is L-Theanine So Widely Discussed?
L-Theanine has become a popular ingredient in food supplements and has been the subject of research into several areas.
Studies have explored L-Theanine in relation to areas including relaxation, stress responses, attention, cognitive performance and sleep. Researchers have also looked specifically at L-Theanine when consumed alongside caffeine.
However, research is still developing and findings shouldn't be interpreted as established health benefits.
You may see L-Theanine described online using words such as calming, focus-enhancing or stress-reducing, but these are not currently authorised health claims for L-Theanine.
What About L-Theanine and Caffeine?
The relationship between L-Theanine and caffeine is particularly interesting because the two naturally occur together in tea.
Researchers have investigated combinations of L-Theanine and caffeine, particularly in relation to attention and cognitive performance.
It's an interesting area of ongoing research, but it's important not to turn those findings into promises about what an individual supplement will do.
For CaffiClear, L-Theanine forms one part of a wider formula developed for people who already choose to consume caffeine without adding additional caffeine to the product itself.
Why Green Tea Extract?
Although L-Theanine is one of the better-known ingredients within CaffiClear, the product wasn't developed around L-Theanine alone. It's one part of a seven-ingredient formulation.
Over the coming ingredient blogs, we'll take a closer look at each of them individually and explain their place within CaffiClear.
(This article is for educational purposes only and is not intended as medical advice).
