Review of Smart Caffeine Supplement

Smart_Caffeine_natural stacks reviews and results. Health and fitness

Caffeine is one of the best natural stimulants in the world. People who are in the productive stages of life especially workers and students use caffeine so as to boost their level of productivity. The stimulant enhances the performance of the brain. This is why many people would do all that it takes to get a cup or several cups of coffee every morning before reporting to their daily duties. The downside of being over caffeinated mostly becomes visible at the end of the day. Apart from experiencing a drastic drop in the performance of the brain, you will also start feeling jittery. Tired of suffering from such side effects? Then it is time to try out Smart Caffeine.

Smart caffeine, a brainchild of Natural Stacks offers all that with minimal side effects. The nootropic is mainly constituted of L-Theanine at 200mg and caffeine at 100mg. According to studies by NCBI (National Center for Biotechnology Information) when caffeine combines with L-theanine, the blend is more efficient than using each individually. Contrary to the general knowledge out there, caffeine alone is not capable of improving one’s mental performance. It needs to be boosted by other ingredients, and this is where L-Theanine comes in to back it up. They further suggest that the L-Theanine should exceed the caffeine to enhance its potential.

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About the Manufacturer

Natural Stacks is a reputable supplement company that has experienced tremendous success over a few years. Their immense success is because they are driven by a simple vision which is, “create the best natural supplements in the world.” By looking at the performance of the company’s products, it is evident that Natural Stacks is on the verge of achieving this goal. The company has also been applauded for its transparency when it comes to revealing the specific formulations of its products. They put everything to the public including the exact dosage of each ingredient. Natural Stacks is a brand you can fully trust.

Natural Caffeine 100mg

Since times in memorial, caffeine has remained to be the world`s most popular stimulant. Its working is simple and precise. It protects adenosine receptors in the brain from being acted on by adenosine, an effect that leads to sleepiness and sedation. The inhibitory mechanism in the caffeine comes in handy to reduce those feelings.

Caffeine is a well researched and globally known stimulant, making it a favorite in the list of ingredients in most brain supplements. But is it effective when working on its own? Further research suggests that a blend of caffeine and L-Theanine boosts one`s cognitive performance and widely promotes concentration.

L-Theanine 200mg

This ingredient is a type of amino acid and is a popular ingredient in most of the nootropics. L-Theanine is the only non-sedative that helps one feel relaxed. It deals with the anxiety and jittery effects that one gets after taking a cup of coffee. It also assists in handling stress, increasing the brain’s activities and boosting memory. L-Theanine is present in green tea, and a regular cup contains 20mg of the same. This is clear evidence that a single pill of smart caffeine has higher amounts of the nutrients as compared to a cup of tea.

Initially, people assumed that a combination of these two ingredients would inhibit the overall performance of the supplement. However, this notion was proven wrong when the two were combined here to produce a powerful effect. They compliment each other’s strength and weaknesses delivering a powerful effect on the user. For instance, the anxiousness and jittery effects of caffeine are suppressed by the L-Theanine while the negative effects of this ingredient are perfectly suppressed by caffeine.

Possible Side Effects

Unlike pure caffeine that when used on its results to jitters and partial addiction, that is not the case with Smart caffeine. The addition of L-theanine to the caffeine helps reduce those side effects and boosts its effectiveness. If you are looking for a brain supplement, then the Smart caffeine will serve you best. The only drawback with the product is its heavy caffeine level, but the level of L-theanine shadows the effect. However, the moment you get strange results after using the supplement, you are advised to seek medical attention to reduce further problems.

How is it Used?

Owing to its well-researched ingredients and skillful combination, the working of Smart Caffeine is certainly efficient. Manufacturers recommend the usage of 1-2 capsules any time you are focused on gaining energy. The amounts may, however, vary according to the amount of concentration you need, but experts recommend a maximum of 6 capsules every day. If you use 1-3 capsules, the effect will last for 4-6 hours. Smart Caffeine is obviously a great deal for your bucks when compared to what results you expect.

Because of the presence of caffeine, users are discouraged from taking the supplement at night as it can deprive them of their sleep. Using it more frequently can make the body tolerant to the pills, and this will lead to addiction. To be on the safe side, try to control your intake. It is recommended to have a two-day break after you have been taking the pills for over five consecutive days. Doing this will help your body to adopt on how to survive without the pills.

Precaution for Use

Smart caffeine is not meant for everyone, and this is because of the powerful effects that it has in the body. You should avoid taking the caffeine if you are pregnant. The same applies to lactating mothers. If you are on any other medication, you should not go ahead to consume Smart Caffeine first seek advice from your doctor.

The caffeine should not be taken together with other caffeine as this can lead to an imbalance in the ingredients. The product should only be used by people who are over 18 years old. Minors should avoid using it at all cost.

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Customer’s Reviews

Different users had diverse views regarding Smart Caffeine, but they were all supporting the fact on how effective the supplement was at boosting concentration and enhancing their level of productivity. They have also not backed off from applauding its safety levels.

L-theanine is an extremely safe ingredient and has powers to suppress all the negative effects of caffeine such as insomnia, anxiety and high blood pressure. It makes the positive aspects of the caffeine to be pronounced hence improving the supplement’s overall performance.” – This is one user from

The supplement is cooler and more useful compared to coffee. All this happens thanks to its pairing with L-theanine that makes you feel more relaxed with reduced jitters and instances of a crash. Am more focused and full of energy throughout the day. Nowadays I don’t feel like I need to grab a cup of coffee in the morning.” – One user said.

The capsule are more accessible than a cup of coffee. It hence takes a lot of caution as you use it to prevent an overdose but once you follow the prescription to the letter, it is the best you can ever get. “ – Malika said.

A different user stated that when he started out, he was not so confident of the capsules effectiveness. He claimed of not depending on the pills on its own and that he used it after taking a cup of coffee. He, however, proved its effectiveness when he once was in a hurry and thought of taking it alone, and certainly, he didn’t regret since his concentration was maintained for almost three-quarters of the day. “No jitters were experienced even when used on an empty stomach …” – he added.

Where to Buy

One reason that separates Smart Caffeine from many other caffeinated products is accessibility. You don’t have to go to the company’s website so as to purchase it. You can order it at a price of $19.95 per bottle. This price tag makes it affordable to many users.

It is not only cheaper than most of the similar supplements, but it is also far much affordable than the traditional coffee. For instance, one bottle of the supplement can last you approximately one month. If you are a heavy coffee user, then it can last up to 15 days. On the other hand, you may have to part with $ 3 for coffee in one day.


According to the piece, it is evident that Smart Caffeine is the perfect supplement that can boost your energy and concentration. It can make you alert, and no amount of distractions will be able to derail you. It also boosts memory retention and improves the cognitive function of the brain.

The supplement can achieve all these benefits without causing any severe negative side effects on the user. Natural Stacks, the product’s manufacturers have made it an open source creating an opportunity for others to try out their formulas and improve on it. In case you encounter any problem with the product, the company offers money back guarantee. This just shows you how the company is sure about the performance of the supplement. In overall, Smart Caffeine is a product worth the investment. It scores highly both in the safety and performance aspects.

For prices and information about other combo packs visit the Natural Stacks Official Website.

As a final note, keep in mind that the best nootropic supplements, cognitive boosters and smart pills are designed to provide maximum results in the long run. While you’ll receive the benefits in about a month or two, you’ll get permanent, long-lasting results if you take them in the recommended 3+ month time frame.

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Smart Caffeine Summary and Overall Rating













  • None of the common side effects
  • Inexpensive supplement
  • 30-day money-back guarantee
  • Smooths energy levels and give you consistent clarity
  • Improved cognitive function


  • You might need to take 3-6 capsules a day
Arlene is a Registered Dietitian and Certified Sports Nutritionist by The International Society of Sports Nutrition (ISSN). She completed an MSc in Dietetics and Nutrition from Florida International University and a BSc in Food and Nutrition from The University of Alabama. Arlene has worked in supplement development, sports nutrition and is currently working in clinical nutrition counseling for a rehabilitation hospital. She is a 3-time Olympic swimmer and loves running and paddle boarding. With her expertise in the world of sports, she has been able to apply her knowledge of nutrition to help athletes improve performance and achieve their goals in different sports.


  1. I have a quick question. I found the article and review very helpful but I want to know if Smart Caffeine would be okay for someone who is sensitive to caffeine? I can’t drink coffee because it swells my lympnodes. I don’t know if this would be a good alternative or not. I need the energy though for work.

  2. Great review! My husband wanted to start taking Smart Caffeine and I wanted to make sure it was okay for him before he did. This sounds perfect for him and his needs. He works in construction so he needs the energy in the mornings and the coffee just don’t cut it anymore for him.

  3. Wow, that is a punch in the face amount of caffeine. I was thinking “I can get this much caffeine without any help”, but 200mg per pill, that seems like a lot. Thank you for the review, however, it is very thorough and I am sure it will help someone that is looking for a little pick me up.

  4. I am wondering how there could be no crash. When you get a crash from caffeine or sugar high or whatever, what is actually causing it then? I just do not believe that I would not crash hard after this wears off.


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