Ingredient · Focus
L-Theanine
The amino acid in green tea that produces calm, focused alertness.
L-Theanine is an amino acid found almost exclusively in tea leaves. It's the reason a cup of green tea feels different from a cup of coffee — same caffeine, smoother experience.
What it is
L-Theanine increases alpha brainwave activity, the pattern associated with relaxed alertness and creative flow. It's one of the most-studied 'nootropic stacks' when paired 1:1 with caffeine.
How it works
L-Theanine crosses the blood-brain barrier and modulates several neurotransmitters (GABA, dopamine, serotonin) to reduce stress without sedation. When paired with caffeine, it blunts the jittery edge while preserving the focus benefits.
Studied dose
100–200 mg/day
SumCo's dose
100 mg per gummy
Further reading
Education · 6 min
Caffeine gummies vs coffee: dose, onset, and the crash.
Same molecule, very different experience. The variables are dose precision and what's paired with it.
Ingredients · 6 min
Melatonin gummies for adults: dose, timing, and grogginess.
Most melatonin gummies are dosed far above what the research supports. Here's what the studies actually show.
Ingredients · 6 min
Apigenin for sleep: what it is, how much, and how it compares to melatonin.
The calming flavonoid behind chamomile tea — and why we put 50mg of it next to a low melatonin dose instead of raising the melatonin.
Other ingredients
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.