Short answer: L-Theanine is included to help ease stress-related vascular tension — chronic stress can tighten blood vessels, and L-Theanine's calming role addresses this indirectly rather than acting on circulation directly.
Why stress connects to vascular tension
Sustained stress triggers physiological responses, including blood vessel constriction, that can work against the relaxation effects of circulation-focused ingredients elsewhere in a formula.
What L-Theanine is known for specifically
Found naturally in green tea, L-Theanine supports a reduction in stress-related vascular tension, helping blood vessels stay relaxed while supporting mental clarity — a calming mechanism, not a stimulant or direct circulation booster.
Why this fits alongside direct circulation ingredients
Addressing the stress side of vascular tension alongside direct nitric-oxide support (Beet Root, L-Citrulline) reflects a more complete approach to circulation than targeting blood flow alone.
See L-Theanine in CardioC2's formula
Named plainly, alongside seven other ingredients.
See the Ingredients