NutraBio Caffeine & L-Theanine pairs 150mg of caffeine with 200mg of L-Theanine in a single capsule, built for people who want the alertness caffeine gives without the restlessness, the anxious edge, or the crash that usually follows. The 150mg is roughly what you get from a medium cup of coffee, and it comes from two sources rather than one: a fast-acting caffeine for immediate lift and Infinergy Di-Caffeine Malate for extended, slower release. L-Theanine supports alpha wave activity in the brain, the state associated with relaxed, focused attention, smoothing out the jitters caffeine alone can create. 60 capsules.†
Supplement Facts: NutraBio Caffeine & L-Theanine (Per 1 Capsule)
- Caffeine: 150mg (dual source: fast-acting caffeine plus Infinergy Di-Caffeine Malate)
- L-Theanine: 200mg
- 60 capsules
- Take 1 capsule 1 to 2 times daily
- Vegetable capsules
- California Prop 65 Warning applies.
Why Two Caffeine Sources
A single fast-acting caffeine source hits quickly and clears quickly, which is what produces the spike and crash pattern. NutraBio splits the 150mg across a fast source for immediate energy and Infinergy Di-Caffeine Malate for a slower, extended release, stretching the energy curve across a longer window.†
The L-Theanine Half
L-Theanine is an amino acid found naturally in green tea, studied for its role in supporting alpha wave activity, the brain state tied to relaxed and focused attention. Taken alongside caffeine, it is used to keep the alertness and focus while softening the edginess. 200mg is the dose used in most of the research pairing the two.†
Built to Stack
Because it is a single capsule rather than a full pre-workout, Caffeine & L-Theanine works well added to stim-free products to give them an energy component, or taken on its own as a daily coffee replacement. Take 1 capsule for a pick-me-up, or 2 if you are a heavier stim user, keeping total daily caffeine from all sources in mind.†
Frequently Asked Questions
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How much caffeine is in one capsule?
150mg, roughly a medium cup of coffee.† -
Can I take two at once?
Yes, though that puts you at 300mg of caffeine in one sitting. Assess your tolerance first and watch your total daily intake from all sources.† -
Will it still give me jitters?
The 200mg of L-Theanine is included specifically to smooth that out, though individual caffeine sensitivity varies.† -
Can I stack it with a stim-free pre-workout?
Yes. That is one of its most common uses, adding a jitter-free energy component to a non-stim formula.†
How to Take NutraBio Caffeine & L-Theanine
Take 1 capsule 1 to 2 times daily. Each capsule contains 150mg of caffeine. Do not take within several hours of bedtime. Monitor total daily caffeine from all sources. Not intended for use by anyone under 18. Do not use if pregnant or nursing. Consult a physician before use if you have a medical condition or are taking medication.
Why Buy at Get Yok'd
- Real-time inventory across all six Southern California stores
- Available in Burbank, Glendale, Glendale Galleria, North Hollywood, Northridge, and Pasadena
- Authorized NutraBio retailer, carrying this alongside standalone L-Theanine and the full NutraBio lineup
- Staff who can help you dial in your daily caffeine and focus routine
- One of the best loyalty programs in the supplement industry: earn rewards on every purchase
Who Should Exercise Caution
- Not for anyone under 18
- Not for pregnant or nursing women
- Not recommended for individuals sensitive to caffeine or with anxiety disorders
- Not for individuals with cardiovascular conditions or high blood pressure without physician clearance
- Monitor total daily caffeine intake from all sources
- California Prop 65 Warning applies.
- 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.