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Natural Stacks Smart Caffeine Supplement 60ct - Instant Energy and Focus for Life School & Work - No Jitters and No Crash - Premium Sourced 100mg Caffeine from Coffee + 200mg L-Theanine from Green Tea

4.3 4.3 out of 5 stars 544 ratings

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About this item

  • 💡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.

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$19.95 ($0.33/Count)
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Get it as soon as Monday, Mar 25
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Product Description

smart caffeine
Natural Energy Boost
smart caffeine
Natural Stacks Smart Caffeine

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Package Dimensions ‏ : ‎ 3.43 x 1.69 x 1.61 inches; 1.8 ounces
  • Item model number ‏ : ‎ PB-Q91J-HSEU
  • Date First Available ‏ : ‎ November 27, 2013
  • Manufacturer ‏ : ‎ Natural Stacks
  • ASIN ‏ : ‎ B00GXPNEUO
  • Customer Reviews:
    4.3 4.3 out of 5 stars 544 ratings

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Natural Stacks Smart Caffeine Supplement 60ct - Instant Energy and Focus for Life School & Work - No Jitters and No Crash - Premium Sourced 100mg Caffeine from Coffee + 200mg L-Theanine from Green Tea
Natural Stacks Smart Caffeine Supplement 60ct - Instant Energy and Focus for Life School & Work - No Jitters and No Crash - Premium Sourced 100mg Caffeine from Coffee + 200mg L-Theanine from Green Tea
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Price$19.95-29% $11.99
List:$16.95
-5% $17.95
List:$18.95
$14.95$17.50$21.99
Price Per Unit$0.33 / Count$0.05 / Count$0.45 / Count$0.08 / Count$0.29 / Count$0.18 / Count
Delivery
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Customer Ratings
Flavor
4.3
4.2
2.6
4.9
4.2
Easy to swallow
4.7
4.4
3.6
4.9
Value for money
4.2
4.4
2.7
4.0
Longevity
4.0
4.6
4.5
Sold By
Natural Stacks
eSupplements
Best Earth Naturals
eSupplements
VitaMonk
Viter Energy
keyword type
sports-nutrition-endurance-and-energy-supplements
sports-nutrition-endurance-and-energy-supplements
sports-nutrition-endurance-and-energy-supplements
sports-nutrition-endurance-and-energy-supplements
sports-nutrition-endurance-and-energy-supplements
sports-nutrition-endurance-and-energy-candy-and-mints
form
Capsule
Capsule
Tablet
Capsule
Capsule
Tablet
flavor
Unflavored
Unflavored
Unflavored
Peppermint
size
60 Count (Pack of 1)
240 Count (Pack of 1)
40 Count (Pack of 1)
60 Count (Pack of 1)
20 Count (Pack of 6)
weight
1.8 ounces
0.18 kilograms
5 ounces
0.05 kilograms
0.04 pounds
age range
Adult
Adult
Adult
Adult
Adult
18 Years and above
product benefit
Focused Energy
Energy Management
Energy Management
Energy Management
Boosts energy and freshens breath with 40mg caffeine and powerful minty flavors

Important information

Ingredients

Natural Caffeine Anhydrous from Coffee, L-Theanine. Do not use if pregnant, nursing or under the age of 12. Consult with a healthcare practitioner before taking this or any nutritional supplement if you suspect a medical condition, are taking any medications, or other non-Natural Stacks dietary supplements. Do not use if safety seal is broken or missing. Store in a cool dry place. Keep out of reach of children.

Directions

Take a serving of 1-2 capsules whenever focused energy is desired. Avoid use in the evening. Do not take more than 6 capsules per day.

Legal Disclaimer

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.

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

Looking for specific info?

Customer reviews

4.3 out of 5 stars
4.3 out of 5
544 global ratings

Customers say

Customers like the quality, sleep quality, and energy boost of the nutritional supplement. They mention that it works well, it helps with concentration, and it gives them the energy they need without making them feel jittery. They also appreciate the no preservatives and headaches. However, some customers have different opinions on side effects, and value.

AI-generated from the text of customer reviews

80 customers mention69 positive11 negative

Customers like the quality of the nutritional supplement. They say it's an effective product that works well and has better results. Some customers also mention that it has a quick effect with no crash. Overall, customers are satisfied with the quality and effectiveness of the product.

"Perfect amount of energy and focus. No jitters, no crash." Read more

"...At least twice and of all the neutropics these work extremely well. I do use them M-F and break on the weekends unless I need to work...." Read more

"...Turns out that was the right dosage for me and it has worked wonderfully. I have more energy in the morning and my alertness has increased...." Read more

"Great product. Fast clean energy that doesn't give you jitters or upset stomach...." Read more

42 customers mention42 positive0 negative

Customers find the sleep quality of the nutritional supplement to be good. They mention that it helps with concentration, anxiety, and focus. They also say it perks them up during work and provides the perfect amount of energy and focus without feeling jittery. Additionally, customers say it helps them wake up in the morning and feel a continuous feeling of awareness throughout the day.

"Perfect amount of energy and focus. No jitters, no crash." Read more

"...I just feel alert, think more clearly and “ready” without a surge sensation...." Read more

"...I have more energy in the morning and my alertness has increased...." Read more

"...Another bonus is that - at least for me anyway - there aren't mood swings or negative energy involved...." Read more

28 customers mention25 positive3 negative

Customers like the energy boost. They say it gives them the energy they need without making them feel jittery. They also say it provides a steady flow of energy for hours, with zero crash.

"...They’re great. Just sustained energy with ZERO crash." Read more

"...I have more energy in the morning and my alertness has increased...." Read more

"Great product. Fast clean energy that doesn't give you jitters or upset stomach...." Read more

"...I got them in the mail, and within a week I noticed that I had increased energy, and after two weeks I saw that it was even more intensified...." Read more

27 customers mention27 positive0 negative

Customers find the jitters of the nutritional supplement to be non-existent. They say it keeps them awake and alert without jitteriness or negative caffeine-type symptoms. They also say it gives them a caffeine boost without any jittiness or crash.

"Perfect amount of energy and focus. No jitters, no crash." Read more

"No jitters, smooth energy curve, gentle increase to peak and gentle coat down from peak over 5-6hrs" Read more

"Really doesn't have a crash when it wears off. Smooth, no jitters pick me up. Recommended." Read more

"...Pros: easy to swallow, keeps me focused, no jitters or crash..." Read more

11 customers mention11 positive0 negative

Customers appreciate the simple ingredients in the nutritional supplement. They say it has quick effects and sources only the top ingredients. Customers also love the GABA and caffeine supplements. They mention that the two of these supplements together are amazing. They also appreciate the L-theanine, saying it has a calming effect. Overall, customers say it's the best natural nootropic stack on the market.

"...L-Theanine is great, but for some brains it's calming effect makes them super drowsy. You will have to experiment with this...." Read more

"...But if used correctly, this theanine-balanced product is great...." Read more

"...simple ingredients (no more than 1-3 ingredients tops), 2) quick effect with no..." Read more

"Wow. Amazing supplement. I love that the L-Theanine is mixed right in with the caffeine for the clean and jitter-free energy in the perfect dose...." Read more

9 customers mention9 positive0 negative

Customers say the nutritional supplement works well for headaches. They mention it provides a smooth, awake feeling that lasts throughout the entire day. They also appreciate the pep in their step and the lack of jitters.

"...I just feel alert, think more clearly and “ready” without a surge sensation...." Read more

"...The best thing about this is that the feeling pretty much lasts throughout the entire day and you don't come down from it with any crash...." Read more

"...around lunch time, but these pills get me going and on my way with no headaches...." Read more

"...and within 15 minutes "the fog" lifted and I was immediately feeling better...." Read more

18 customers mention10 positive8 negative

Customers are mixed about the side effects of the nutritional supplement. Some mention that it has no jitters or headaches from caffeine withdrawal, and has not affected their sleep. However, others say that it aggravated their symptoms and gave them migraines.

"...even effectively reversed a number of mental funks, and actually improved my sleep on a few occasions...." Read more

"...I did nothing!!!! I couldn't focus! My head felt dizzy and the ache in my joints came back again! I had to stop, sit down and relax...." Read more

"This is perfect for me. No jitters and no headaches from Caffeine withdrawal...." Read more

"This gave me a burning stomach ache and a headache in the beginning then it woke me up …." Read more

17 customers mention10 positive7 negative

Customers are mixed about the value of the nutritional supplement. Some mention it’s well priced, saving money with the smart caffeine, while others say it’ll make them unproductive and is overpriced.

"...and the price was right...." Read more

"...It makes me sleepy still when taking the pills. Not the pick up I wanted." Read more

"...It’s so well priced! I take one every morning and I have only gone without it on a rare occasion and noticed it during my day...." Read more

"Works but overpriced. There are other great alternatives which are cheaper (not necessarily on amazon)" Read more

wish they were stronger
4 Stars
wish they were stronger
100mg of caffeine, 200mg of that other thing. 100mg of caffeine is basically a cup of coffee. so its cool to drink coffee without the crash, but thats all this is.
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Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.