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Special Smart Caffeine®

For Clean Energy With No Crash
For Clean Energy With No Crash

Smart Caffeine is a highly effective combination of L-theanine and Caffeine. L-theanine is a natural amino acid found in green tea that removes the undesirable side effects of caffeine, creating long-lasting energy and attention without jitters, anxiety, or a crash.

The benefits include:

  • Increased focus and alertness

  • Improved cognitive function

  • Enhanced short-term memory retention

  • More ability to ignore distractions

  • No overstimulation

Smart Caffeine creates a relaxed yet alert state that is ideal for focusing and thinking clearly.

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Increased focus and alertness

Increased focus and alertness

Short-term memory support

Short-term memory support

No crash or jitters

No crash or jitters

 Consistent, long-lasting energy

Consistent, long-lasting energy

Open Source

Most companies use "proprietary blends" so they don't have to tell you the amount of each ingredient in their formulas. At Natural Stacks we believe it's your right to know exactly what you're putting into your body. We proudly publish our innovative formulas and ingredient suppliers in an open source format.

Learn About Our Commitment To Transparency

Money Back Guarantee

If for whatever reason you're unsatisfied with your Natural Stacks products, you can return the product within 30 days for a full refund. We also provide actionable tips on our blog and newsletter for you to maximize your performance with our premium products.

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*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.