How Zoot works.

Buccal absorption. 50mg of caffeine paired with L-Theanine, Alpha GPC, and L-Tyrosine. Faster onset than coffee. No crash on the way down.

5 min read

Four ingredients. One can.

Each Zoot Ultra pouch contains four functional ingredients chosen for how they work together — not for what looks impressive on a label. Each does one job; together they do four at once.

1. Caffeine Anhydrous

   50mg

   Standard pure caffeine. Equivalent to one strong espresso. The wake.

   Caffeine blocks adenosine receptors in the brain — the body's 'you're tired' signal. Onset is 10 to 15 minutes via buccal absorption, faster than coffee's 30 to 45 minute curve through the stomach. Caffeine is GRAS-rated by the FDA and the most-studied stimulant in nutrition science.

2. L-Theanine

   30mg

   Amino acid from green tea. The smoother.

   L-Theanine pairs with caffeine to reduce jitters without dulling focus. The combination is one of the best-studied 'smart caffeine' stacks — Owen and colleagues (2008) demonstrated cognitive performance and mood benefits from the combination at similar ratios. Stack-synergy dose.

3. Alpha GPC

   60mg

   Choline precursor. The focus underneath.

   Alpha-glyceryl-phosphorylcholine supports acetylcholine synthesis — the neurotransmitter the brain uses for focus and memory. Standalone nootropic doses are 200 to 600mg; the 60mg in Zoot is a stack-synergy contribution rather than a full nootropic dose. Parker and colleagues (2011) demonstrated cognitive and physical performance benefits when combined with caffeine.

4. L-Tyrosine

   60mg

   Dopamine precursor. The signal under stress.

   L-Tyrosine is the amino acid precursor to dopamine. Best-studied for cognitive performance under physiological or psychological stress — military research (Mahoney et al., 2007) used it to mitigate working-memory decrements during cold exposure. Stack-synergy dose.

Each active does one thing. Together they do four things at once.

Onset, peak, taper.

Third-party verified.

Every batch of Zoot Ultra is tested by AFL (A Tentamus Company), an independent accredited lab in Plano, Texas.

Where the numbers come from.

The claims on this page are anchored to peer-reviewed research. We cite. Read for yourself.

1. Owen GN, Parnell H, De Bruin EA, Rycroft JA. The combined effects of L-theanine and caffeine on cognitive performance and mood. Nutritional Neuroscience. 2008;11(4):193-198. [link]
2. Mahoney CR, Castellani J, Kramer FM, Young A, Lieberman HR. Tyrosine supplementation mitigates working memory decrements during cold exposure. Physiology & Behavior. 2007;92(4):575-582. [link]
3. Bellar D, LeBlanc NR, Campbell B. The effect of 6 days of alpha glycerylphosphorylcholine on isometric strength. Journal of the International Society of Sports Nutrition. 2015;12:42. [link]
4. Mandel HG. Update on caffeine consumption, disposition and action. Food and Chemical Toxicology. 2002;40(9):1231-1234. [link]
5. Heckman MA, Weil J, González de Mejia E. Caffeine (1, 3, 7-trimethylxanthine) in foods: a comprehensive review on consumption, functionality, safety, and regulatory matters. Journal of Food Science. 2010;75(3):R77-R87. [link]

References update as new literature is published. Email hi@zootpouches.com if you spot something we should add.

Before you use it.

• Caffeine cap:Don't exceed 8 pouches in 24 hours. FDA daily caffeine guideline is 400mg total.
• Skip if: pregnant, breastfeeding, or caffeine-sensitive.
• If you're on medications: check with your doctor. L-Tyrosine can interact with MAO inhibitors and a few other classes — standard supplement safety.
• Not for kids. Keep out of reach of children.

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.