Smart Caffeine Nootropic Stack

Natural Stacks Smart Caffeine is a supplement that claims to deliver the energy boost of caffeine but without the jitters so that you can be both relaxed and alert while enjoying total mental clarity without distractions.

Being relaxed yet energised sounds pretty Zen to us but can you really achieve a heightened state of energy combined with inner calm simply by taking this supplement? We take an in depth look at Natural Stacks Smart Caffeine to find out more.

Smart Caffeine Nootropic Stack Pros

  • Should not cause dangerous side effects.
  • Buy direct from Natural Stacks and you can qualify for a 30 say money back guarantee.
  • Some positive customer feedback.

Smart Caffeine Nootropic Stack Cons

  • No real help to brain health. Effects are only temporary.
  • Some customers report fatigue and sleepiness as a side effect.
  • Could be habit forming.
  • May need to avoid caffeine from other sources while using this supplement
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Smart Caffeine Nootropic Stack
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What You Need To Know About Smart Caffeine Nootropic Stack

Smart Caffeine is fairly safe and it will probably be effective for some people. However we do have some concerns about it.

Caffeine pills have been around for a long time and just because this one is slightly less harsh than caffeine on its own, essentially this supplement is a caffeine pill and not much more. In our opinion it may be effective if used occasionally but probably will not suit you if you are a habitual coffee drinker or use it too often and build up a tolerance.

Take the maximum daily recommendation and your bottle will only last six days!

What Are The Side Effects Of Smart Caffeine Nootropic Stack?

Many people have noticed untoward side effects too. A capsule billed as a nootropic energy enhancer should not make you drowsy yet a lot of people have mentioned this side effect which is worrying. In addition Smart Caffeine does nothing for your long term brain health. It does not contain ingredients to boost Choline levels for example. Any effects will only be temporary.

How Much Does Smart Caffeine Nootropic Stack Cost?

Direct from the Natural Stacks website, 1 bottle of 60 capsules costs $15.95 (enough for at least 10 days supply). From Amazon USA 1 bottle of 60 capsules costs slightly more at $19.94 but the shipping costs are not disclosed.

Our Verdict On Smart Caffeine Nootropic Stack

We like that this supplement is made in the USA and we are quite impressed with Natural Stacks and the guarantee. The downside is that we just don’t think this supplement is good enough to recommend it to anyone else to try.

Is Smart Caffeine really much more than the effects of drinking a few extra cups of tea and coffee? We are not so sure it is, so we cannot add this supplement to our approved list.

The most popular consumer choice in 2021 is OmniMind

Containing ingredients that have been clinically tested and boasting a 30-day money-back guarantee, OmniMind is quickly rising to the top of the nootropic world.

Find out why people are choosing OmniMind to achieve advanced brain performance, and why it's our editor's top pick.

Read the Nootropic Watchdog OmniMind review here.

Smart Caffeine Nootropic Stack Review

Smart Caffeine Nootropic Stack Facts

  • Made in the USA.
  • Each bottle contains 60 capsules. Take the maximum recommendation and this is six days supply.
  • Natural Stacks is a US company that specialise in nootropic supplements.

Natural Stacks Smart Caffeine contains just two ingredients: caffeine and amino acid L Theanine. This combination has been described as the #1 recommended beginners Nootropic stack so if you are considering trying nootropics for the first time, this supplement may be a good place to start.

Caffeine is the world’s favourite stimulant. Safe and well tolerated by most people, caffeine is ideal for providing a quick energy boost and pick you up. The downside is that this energy boost is not effective as a cognitive enhancer and as we all know drinking coffee can leave you feeling strung out, wired and jittery.

This is where the L Theanine comes in. L Theanine is an amino acid found naturally in the tea plant and nothing else, so it is not generally taken in diet, unless you drink tea in high quantities. It is L Theanine that causes the relaxing but non sedative effect of tea.

According to the product advertising, L Theanine and Caffeine work well together because the L Theanine helps to smooth the effects of the caffeine without losing that energy and motivation that caffeine can cause. It is important to remember that all tea does contain caffeine and L Theanine so regular tea drinkers will be used to this energising yet relaxing effect.

However the effects will only be temporary. Natural Stacks Smart Caffeine will not have a long lasting effect unlike other nootropic supplements that increase the brain chemical Choline.

Natural Stacks is a US company which according to the company information is based at: 16192 Coastal Highway
Lewes, DE 19958

The business was founded by two former college friends and athletes Roy Krebs and Ben Hebert and the company is run by a team of “former collegiate athletes, martial artists, and nutrition and fitness experts.”

All products are aimed at promoting health and fitness with a focus on improving brain power and mental performance.

Other products include Ciltep – a nootropic stack aimed at improving focus, motivation and memory, herbal supplements such as Curcumin with Organic Coconut Oil and similar. We have not previously covered any Natural Stacks supplements.
All supplements are manufactured in the USA in facilities which conform to GMP (good manufacturing practice).

How to Take Smart Caffeine Nootropic Stack

Take a serving of 1-2 capsules whenever focused energy is desired. Avoid use in the evening. Total daily dosage should not exceed 6 capsules. Take 1-2 days off per week (weekends for example).

Smart Caffeine Nootropic Stack Concerns:

  • If you sign up for “subscribe and save” will it be easy to cancel this auto ship agreement?
  • Does Smart Caffeine offer value for money? It seems a very expensive way of taking caffeine.
  • Some people have bought this supplement to help boost alertness but instead have fallen asleep. It obviously does not work for everyone.

What Does Smart Caffeine Nootropic Stack Claim To Do?

According to the product advertising:

Thousands of people use Smart Caffeine every day as a study aid, pre-workout, energy drink replacement or whenever they need a boost.

The four key points are as follows:


The two ingredients are explained too:

Caffeine is the world’s most popular natural stimulant. By using the purest form available, we are able maximize its positive effects like increased focus, alertness and energy.


L-Theanine is a naturally occurring amino acid with benefits that include mental relaxation, reduced stress, improved working memory, enhanced learning and increased alpha brain wave activity.

The way that the ingredients work together is also described:

… when the two are combined the effects do not simply negate one another. Instead they work together very synergistically, allowing the user to fully benefit from the positive aspects of both compounds without the negative side effects. The energy and motivation from the Caffeine is harnessed and smoothed over with L-Theanine.

So What Does All This Mean?

Smart Caffeine is essentially a caffeine pill that may help you when you need additional energy.

The advantages of Smart Caffeine over a plain caffeine pill is that this supplement contains the L Theanine to make the experience smoother so will probably be effective at increasing your energy levels without too many adverse effects.

However you will need to forgo your usual coffee and tea while using this supplement as caffeine from other sources could cause adverse effects. The recommendation is to keep to no more than 400mg caffeine each day.

In addition you will need to take a few days off this supplement each week, according to the product information.
Our main concern about Smart Caffeine is that it could be habit forming.

After all if you really feel tired and unable to cope with your workload, family or studies, you may find it beneficial to get some sleep rather than take caffeine pills.

So Does Smart Caffeine Nootropic Stack Work?

We are not convinced by Smart Caffeine. The high number of positive customer comments looks good at first glance but the fact that Natural Stacks are offering freebies and discounts for reviews spoils this impression. If you look between the lines there are a lot of negative experiences relating to this supplement.

In addition although caffeine is well known as a stimulant, it is equally well known that as you become accustomed to use you do build up a tolerance to the effects. If you are already a caffeine user you may not notice much effect but either way, after a few times of use, the effect of this nootropic stack may have paled. It is after all only the equivalent of an average cup of filter coffee per capsule.

In addition, taking this supplement will require you to avoid caffeine from other sources so if you do enjoy your cup of coffee, you will have to do without this, while you are taking this supplement.

So What Is Smart Caffeine Nootropic Stack and What Are The Ingredients?

Smart Caffeine is a nootropic supplement that the advertising say will increase energy levels without causing jittery side effects. Serving size is equal to 1 capsule.

  • Natural Caffeine (from coffee beans) (100mg): Caffeine is the world’s favourite stimulant and the amount contained in each capsule is roughly the equivalent of one cup of filter coffee. However scientific research shows that caffeine is more powerful when consumed in an anhydrous state (capsule/tablet, powder), as compared to coffee so you may notice a stronger effect than usual. Tests show that caffeine does have positive benefits if consumed before exercise and will improve alertness and endurance.
  • L Theanine (200mg): This non essential amino acid is not common in the US diet because it is only present in the tea plant Camellia Sinensis. This means it is actually present in ALL teas but because green tea retains more nutrients than black tea, the most usual source of L Theanine is green tea. L Theanine has structural similarity to Glutamine and to both neurotransmitters that are produced from Glutamine (GABA and glutamate). L Theanine is known for causing a relaxing yet attention promoting effect. It is effective as here in combination with caffeine and other stimulants because it takes the edge of the harsher effects.

Does Smart Caffeine Nootropic Stack Have Any Side Effects?

Smart Caffeine should be safe for most people if taken correctly but you should ensure not to take too frequently or it could be habit forming.

Caffeine can cause a range of side effects such as jitteriness and insomnia which are well documented and Theanine can cause some people to feel fatigued.

Depending on your personal make up it is possible to experience completely opposite side effects from the same supplement according to customers.

Potential side effects may include:

  • Sweating
  • Pounding heart/ palpitations
  • Increased heart rate
  • Restlessness
  • Insomnia
  • Upset stomach
  • Gastrointestinal upset
  • Nausea
  • Energy surge
  • Fatigue
  • Sleepiness
Not suitable for individuals under 18. Avoid if you are pregnant or breast feeding. Speak to your doctor first if you have an underlying medical condition or are taking prescription medication.

Any Smart Caffeine Nootropic Stack Reviews From Customers?

There are plenty of customer reviews for Smart Caffeine. However some of the positive reviews could be biased as we have discovered that Natural Stacks has offered this supplement at a reduced price in return for an honest review.

Although there is nothing wrong with this practice, in our experience people are more critical and analytical of a product if they have had to part with their own hard earned cash and at full price!

This lady felt the capsules were a good alternative to coffee:

If you drink a lot of coffee to keep you going, start saving your money by buying those expensive cups of coffee and take Smart Caffeine pills. I have to stay alert all the time so these pills are really helping me…


I bought mostly for the caffeine. I do feel like it’s easier to concentrate when taking these (I get distracted easily), though I would guess that regular caffeine would help me concentrate better too. Overall great product, will buy again.

Not everyone is as pleased. Some people have noticed an increased tolerance following use:

Worked nicely only the first few times on me. Then your body develops tolerance to it…

This lady felt that the supplement was dangerous:

I took 2 of these and I crashed within hours, felt so sleepy on my shift that I had to clock out early…

Many other customers have reported similar experiences.

Many people report that they have purchased this supplement on the basis of the high number of positive reviews.

What About A Guarantee

If you buy direct from the Natural Stacks website, you are covered by a guarantee.

Here’s what it says in the terms and conditions:

All orders purchased through are backed by our 30-day 100% money back guarantee from the date of purchase.

If in the unlikely event you are not completely satisfied with your purchase, contact [email protected] and we will process your eligibility for a refund. Any additional bottles must be returned unopened for a refund (shipping & handling charges are not refundable).

This does not apply to supplements bought elsewhere.

Where Can I Buy Smart Caffeine Nootropic Stack?

Smart Caffeine is not available in the stores or shopping mall. It is easily available online.

You can buy Smart Caffeine direct from the Natural Stacks website.

1 x bottle of 60 capsules costs $15.95 (at least 10 days supply)

You can also find special deals on larger purchases.

4 x 60 capsule bottles of Smart Caffeine (15% discount) costs $67.83 – this amount could last between 40 days or longer.

Regular US shipping costs $3.95.

Natural stacks will ship internationally for an additional $9.95.

If you sign up to “Subscribe and Save” the auto billing programme where the company send you fresh supplies each month and bill you accordingly , you can save a further 10%.

You can also buy Smart caffeine via Amazon USA.

1 x bottle of 60 capsules costs $19.94. Shipping costs are not disclosed.

Smart Caffeine is on sale via Amazon UK.

1 x bottle of 60 capsules costs £17.50 including free delivery.

Australian customers can access an Australian version of the Natural Stacks website and buy direct in their own country. Natural Stacks products are also available from the MYDFX website.

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3 out of 5
Editors Rating
  • Effectiveness
  • Safety
  • Price / Guarantee
The most popular consumer choice in 2021 is OmniMind

Containing ingredients that have been clinically tested and boasting a 30-day money-back guarantee, OmniMind is quickly rising to the top of the nootropic world.

Find out why people are choosing OmniMind to achieve advanced brain performance, and why it's our editor's top pick.

Read the Nootropic Watchdog OmniMind review here.

Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

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