NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules
NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules
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Natural Stacks

NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules

Key item features

  • ALERT FOCUS AND PRODUCTIVITY: Take this Smart Caffeine Supplement with L-theanine for when you need alert focus and long lasting energy. We blended 100 mg of the purest form of Natural Caffeine with 200mg mg of L-Theanine from Green Tea to get the best of both worlds.
  • NO JITTERS OR CAFFEINE CRASH: Unlike the 200mg caffeine pills that make you jittery and anxious, Smart Caffeine is a calm and smooth energy pill. No more staying up late, wired up from your last cup of coffee too many.
  • START YOUR DAY OFF STRONG: Add Smart Caffeine to your morning routine or anytime of day as a study aid, pre-workout or whenever your energy needs a lift. Perfect as a coffee or energy drink replacement.
  • HEALTHY AND SAFE: Our all natural ingredients are Non-GMO, gluten free, and vegan. Every ingredient can be traced directly to trusted suppliers.
  • Natural Stacks has earned the trust of thousands of customers with our innovative products and open source transparency program. No more “proprietary blends”, we believe in optimizing your performance without compromising on ingredient quality.
Current price is Now $16.96
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was $19.95
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4.228070175438597 stars out of 5, based on 58 seller reviews(4.2)
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Customer ratings & reviews

4.6 out of 5 stars
stars
159 ratings143 reviews
How item rating is calculated
  1. 5 stars74% (118)
  2. 4 stars16% (25)
  3. 3 stars7% (11)
  4. 2 stars1% (2)
  5. 1 star2% (3)

Reviews summary

Pros

  • : Provides hours of sustained energy without crash.
  • : Provides sustained energy without crash or jitters.
  • : Helps maintain a calm and alert state without jitters.
  • : Provides energy without a crash or letdown.
  • : Helps stay focused without side effects.

Neutral

  • : Can be a good value for some, but feels overpriced to others.
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Showing 1-3 of 143 reviews

Aug 20, 2025
anonymous
Sold byNatural StacksDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Nice supplement!

This supplement get up and make my day.

Helpful?7AJ8MI16D5MR989453397
Jul 7, 2026
anonymous
Top Reviewer
Sold byNatural StacksDelivered byWalmart
5 out of 5 stars review

Verified Purchase

UNBELIEVABLE BUT IT REALLY WORKS FOR ME 😄

excellent and outstanding natural energy and Blessed to just happened to find it .🙏🙏🙏

Helpful?7AJ8MI16D5MR989453397
Jun 12, 2018
Earl Collins
5 out of 5 stars review

Awesome product!!

I very much liked the energy this product gave me. No spikes. Now lows. Energy without the crash. I highly recommend. Take 1 capsule first thing in am then another mid-afternoon. No sleep issues. Allowed me to cutback on regular caffeine intake. Would highly recommend to anyone. Give it a try.

Review from www.naturalstacks.com
Helpful?7AJ8MI16D5MR989453397