INGREDIENT
L-THEANINE
N-ethyl-L-glutamine · CAS 3081-61-6
A non-protein amino acid found naturally in tea leaves, conventionally paired with caffeine in focus and energy formulas.
WHAT IT IS
L-theanine is an amino acid that occurs naturally in the leaves of Camellia sinensis — the tea plant. It is not one of the amino acids used to build protein in the body, which is why it is described as a non-protein amino acid.
It is water-soluble and, like caffeine, a relatively small molecule.
WHY FORMULAS USE IT
- It is the conventional partner ingredient to caffeine. Formulators across the category pair the two because tea naturally contains both.
- It allows a formula to include a stimulant alongside a non-stimulant amino acid rather than stacking stimulants on top of each other.
WHAT THE EVIDENCE COVERS
L-theanine has been studied orally, most often in combination with caffeine. As with caffeine, that research describes swallowed doses.
VYROTECH makes no claim that oral L-theanine findings describe the behaviour or effect of L-theanine in a skin-contact patch.
CONTENT IS NOT ABSORPTION
The dose listed on a VYROTECH label is the quantity in the patch's active layer, not a delivered dose.
Amino acids differ widely in how they behave at the skin barrier, and a listed milligram figure should never be read as a systemic dose.
LIMITATIONS & CAUTIONS
- • Individual response varies.
- • For adults 18+. Not suitable during pregnancy or breastfeeding.
- • Consult your doctor before use if you take medication.
IN THE VYROTECH RANGE
Doses shown are the quantity contained in each patch's active layer. They are not a delivered, absorbed or dietary intake figure.