BrainJuice is mainly a nootropic supplement, but it also helps improve energy levels. It regular intake is leads to an increase in focus and concentration. You will find it much better to handle mentally challenging tasks and notice an improvement in cognition as well. It uses natural and organic ingredients and is free of any gluten and refined sugar. It contains antioxidants as well that protect brain cells and improve memory and overall brain function.

BrainJuice is advertised as a nootropic supplement that improves focus and increases energy without causing any jitters. The question is, can you really improve memory and focus by taking a supplement with natural ingredients? Is BrainJuice better than other nootropic supplements with a similar ingredient profile? Here is our review to help you decide.

BrainJuice Pros

  • May improve focus a little
  • Easy to take on a daily basis

BrainJuice Cons

  • Contains ineffective, under-dosed ingredients
  • Does not work for most people
  • May still cause jitters and crash
  • Does nothing to boost mental energy
  • May cause some side effects
  • Does not come with a money-back guarantee
  • Costs much more than other similar supplements
Watchdog Rejected


WATCHDOG TIP: Consider using the consumer #1 rated Nootropic – CLICK HERE

What You Need To Know About BrainJuice

BrainJuice seems to be your run-of-the-mill type of nootropic supplement, but it is different in the sense that it improves focus and increases energy at the same time. It comes in an easy-to-use 2.5oz liquid format. It contains L-Theanine that is supposed to increase energy production without making you deal with jitters and restlessness. For cleaner energy, it also contains green tea extract, and prevents free radical damage by providing you with antioxidants from acetyl-L-carnitine. The addition of L-tyrosine is supposed to increase neurotransmitters such as epinephrine and dopamine that improve mood. You can also find a decaffeinated version of BrainJuice. The ingredient profile certainly looks impressive, but unfortunately, there is not enough scientific evidence to support the supplementation of those ingredients.

What Are The Side Effects Of BrainJuice?

BrainJuice contains a number of natural ingredients, but it is still possible to develop gastrointestinal side effects. It promises clean energy, but some people may still end up dealing with jitters. Refer to our “Side Effects” section to discover more.

How Much Does BrainJuice Cost?

BrainJuice is quite expensive costing you $47.88 for a pack of 12 2.5fl.oz bottles. Both original and caffeine-free varieties cost you the same amount of money. You can save some money by subscribing to their auto-ship program – you will be paying $43.09 in that case.

Our Verdict On BrainJuice

BrainJuice claims to improve cognition, memory, and mental energy. While the ingredients may look effective, the truth is that BrainJuice fails to offer any real benefits. The main reason is that you need to take larger doses of ingredients found in BrainJuice, and there is no way to tell how much of those ingredients available per serving because it relies on a proprietary blend. Some ingredients such as green tea extract and alpha GPC may improve concentration and energy to a certain extent, but you should expect anything out of the ordinary.

The price is quite high too, especially considering that you can find a better nootropic supplement with clear ingredient profile and serving information at a price much lower than what you pay for BrainJuice.

Overall, we do not recommend BrainJuice to our readers!

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.

BrainJuice Review

BrainJuice is advertised as a nootropic supplement but it also claims to increase overall energy without giving you any jitters or energy crashes. It contains natural ingredients that are supposed to help improve memory, cognition, and mood. The problem is that most of its ingredients lack sufficient scientific evidence for support. Some ingredients have shown promising result in scientific studies, but they are highly under-dosed in BrainJuice.

It contains alpha GPC that is supposed to improve cognition and memory by increasing the production of acetylcholine. Moreover, it supposedly helps improve your problem-solving skills and boost your mood at the same time. Some supplement manufacturers also suggest that alpha GPC may prove effective in the treatment of age-related cognitive decline. Unfortunately, you will not find scientific data to support these claims. Some evidence is there to support the claim that alpha GPC improves memory, but the effects are evident only in individuals suffering from memory related problems. It means that it may do nothing to help otherwise healthy individuals. It also does nothing to improve the symptoms of Alzheimer’s disease.

It is worth mentioning that some scientific studies show that not everyone will be able to tolerate higher doses of alpha GPC, which is the reason why it is better to avoid it in the first place. You may experience side effects if you are not already deficient in choline and getting enough through your diet. It is worth mentioning that some supplement manufacturers claim that alpha GPC triggers the release of growth hormone, which improves endurance and energy, but studies do not support this claim either. Some studies have noticed positive benefits, but they are found to be biased. For instance:

  • In seven men with at least two years of resistance training given 600mg Alpha-GPC 45 minutes prior to simulated bench throws, supplementation was associated with a greater exercise-induced growth hormone increase and 14% improved power output. Source

It also shows that even if the claim is true, you are still going to experience an insignificant increase in energy and power output. It is also important to notice that even to experience that slightest boost in energy, you will have to take larger doses of alpha GPC. BrainJuice uses a proprietary blend of ingredients, so it is not possible to confirm if it contains enough.

  • Supplementation of Alpha-GPC at 400mg thrice daily (1,200mg daily) for 180 days in persons with mild to moderate Alzheimer’s disease was able to improve symptoms. Source

BrainJuice Facts

  • Improved focus
  • Available in 2.5oz liquid format

You will also find acetyl-L-carnitine in each serving of BrainJuice. It is included in the blend to increase the absorption of nutrients. It is supposed to improve energy production and increase fat loss at the same time. Again, scientific evidence is lacking, and you really do not need to take a supplement to increase your intake of acetyl-L-carnitine if you already get enough amino acids through dietary sources. An overdose of acetyl-L-carnitine may also cause several problems, including stomach irritation, restlessness, fishy breath, and nausea. It may also affect the thyroid function and make it difficult to lose weight effectively.

It contains green tea extract, which actually adds caffeine to the blend and supports improved focus and attention. Caffeine is a stimulant, so it is likely to increase focus and alertness, but the effects last for a short time only. Moreover, you may not experience any benefits when your body gets used to the dose you are already taking. You may have to increase the dose, but that comes at a price and you end up developing several side effects. It also contains EGCGs, but how much is there to help prevent oxidative damage is not clear. Even if there is enough, you may still experience insignificant benefits only.

  • In a study done on obese persons with metabolic syndrome (mean BMI, 36.1), green tea provided in either drinks or capsules (totaling approximately 870-928mg catechins daily, 440-460mg EGCG) were given for 8 weeks. Subjects were not blinded to treatment, although their assessors were. Reductions in weight and biomarkers of oxidation were significant, 2.5+/-0.7kg weight loss greater in the green tea groups. Trends were seen in reductions of triglycerides and LDL, and improvements in HDL; however, these were not statistically significant. Source

How to Take BrainJuice

Here is what the official site says about taking BrainJuice:

  • Just drink it. Swish it under your tongue and around your mouth for 10 seconds for a more immediate effect. Doing so utilizes “sublingual absorption,” which gets the nutrients absorbed into your blood stream faster. As with any supplement, BrainJuice™ is best with a healthy snack and glass of water within 5 minutes of drinking it.

BrainJuice also contains L-Theanine, which is usually included in the blend to counteract the negative effects of caffeine, but it really does nothing in case of BrainJuice because people still experience jitters after taking it. It is important to mention that some studies support the use of L-Theanine to treat light anxiety, but do not expect much if you are suffering from chronic fatigue and anxiety.

  • In a 2011 study, researchers sought to determine L-theanine’s effect on attention and reaction time. The study concluded that participants experienced better attention and reaction time, but that “no significant differences were noticed among subjects with a minimal anxiety propensity.

How much L-Theanine you need to see a change in serotonin levels vary greatly from person to person, which is why BrainJuice is quite ineffective for most people. Some studies suggest that L-Theanine is effective in the treatment of anxiety because it cross the blood-brain barrier, but it happens only when larger doses of L-Theanine are administered.

You will also find organic acai berry in the blend, which mainly helps by providing you with antioxidants that prevent oxidative damage to brain cells. Unfortunately, you will not find any independent, peer-reviewed study suggesting that acai berry supplementation can reverse age-related memory loss or cognitive problems.

BrainJuice Concerns:

  • Ineffective, under-dosed ingredients
  • Possibly ineffective for most people
  • Possible jitters
  • No change in energy
  • Not-so-impressive taste
  • Possible side effects
  • No money-back guarantee
  • Quite expensive

N-acetyl-tyrosine is another noteworthy ingredient in BrainJuice, which is supposed to help by increasing levels of dopamine in the brain. Some studies are certainly available to support the claims associated with L-tyrosine. For instance:

  • Relative to placebo, 100mg/kg L-Tyrosine was associated with significant improvements in mood, cognitive function, and side effects associated with acute stressors (cold and altitude) in military personnel. Heart rate and blood pressure were unaffected. Source

The issue is that these effects are observed only when larger doses are administered, and we do not think you are going to get 2,000mg of L-tyrosine from each serving of BrainJuice. Moreover, you need to bear in mind that even if you get enough, there is still no guarantee that L-tyrosine will work for everyone. For instance:

  • 2g of Tyrosine in a protein rich drink (taken five times daily to total 10g) was able to reduce blood pressure and preserve cognition (as measured by a matching assignment, where there was less of a decrease at posttest relative to pretest) during a week of combat training in cadets, relative to carbohydrate isocaloric placebo. There was no significant influence on mood state. Source

Other than these ingredients, there are B-vitamins in the blend. The truth is that you do not really need to supplement with B-vitamins when you are already following a balanced diet. In fact, taking B-vitamins when you do not have a deficiency can lead to several side effects. Moreover, if you really think you are deficient in B-vitamins, you will be much better off taking a multivitamin supplement that will cost you much less than what you pay for BrainJuice.

Overall, BrainJuice may look like a good choice for anyone interested in increasing cognition, memory, and overall brain function, but the use of a proprietary blend has really made people skeptical about trying it. The lack of scientific evidence to support the formula is another reason why we think you will be better off trying a different nootropic supplement than BrainJuice.

What Does BrainJuice Claim To Do?

BrainJuice uses a combination of natural ingredients to offer a number of amazing benefits. Here are some of its claimed benefits:

  • Improves overall focus and concentration
  • Increases mental energy
  • Increases energy production without jitters
  • Improves dopamine production for better mood
  • Improves your cognitive function
  • Increases your working memory
  • Improves performance and endurance

Does BrainJuice Work?

BrainJuice is a nootropic supplement but it fails to work because it is a combination of ineffective and under-dosed ingredients. Alpha GPC is supposed to increase memory and boost mood, but scientific studies do not confirm these claims. You also need to take larger doses of alpha-GPC to see any results, but there is no way to tell how much is in BrainJuice because it uses a proprietary blend of ingredients. Similarly, it contains acetyl-L-carnitine to increase energy product, but you do not need to supplement with it if you are following a balanced diet. Caffeine found in green tea extract may improve alertness a little, but do not expect much since you do not know exactly how much of green tea extract is available per serving. It contains L-Theanine to reduce anxiety, but it seems that it does not have the optimum dose because most people experience no effects whatsoever. Other than these ingredients, you will find some more, but even they fail to offer any real cognition related benefits. Therefore, we strong believe that you should avoid BrainJuice in the first place.

What Are The Ingredients of BrainJuice?

BrainJuice is a combination of different natural ingredients, but the truth is that most of those ingredients do not have sufficient scientific evidence to support their claims. Some of the ingredients are quite under-dosed, while others are completely ineffective. Here is the list of the ingredients you find in each serving of BrainJuice (serving size is equal to 1 bottle):

  • Vitamin C (as Ascorbio Acid, Acerola) 80 mg
  • Vitamin B6 (as Pantothenic Acid) 10 mg
  • Vitamin B12 (as Methylcobalamin) 500 mcg
  • Pantothenic Acid 15 mg
  • Sodium 5 mg

Brainpower Blend 1.44 g

  • Choline (as Alpha-Glyceryl Phosphoryl Choline)
  • Green Tea Extract
  • Acetyl L-carnitine
  • Organic Acerola Cherry Extract
  • Organic Açaí Berry Powder
  • N-Acetyl L-Tyrosine
  •  Organic Blueberry Powder
  •  L-Theanine

Other Ingredients

  • Purified Water, Organic Granulated Coconut Nectar, Natural Flavors, Monk Fruit Extract, Organic Stevia.

Does BrainJuice Have Any Side Effects?

BrainJuice provides you with a variety of ingredients that may cause a number of side effects. For instance, it contains alpha-GPC that may be responsible for causing side effects, such as nervousness, fatigue, diarrhea, nausea, dizziness, and gastrointestinal distress. You may experience restlessness, vomiting, nausea, headache, and dry mouth because of the addition of acetyl-l-carnitine to the blend.

L-Theanine may lead to several side effects as well, such as loss of appetite, difficulty concentrating, low blood pressure, dizziness, headaches, and gastrointestinal distress. It may also interact with other drugs – you should not take L-Theanine or BrainJuice if you are already taking blood pressure lowering drug.

Acai berry supplements are usually considered safe, but there is always a possibility of developing toxins and plaque in the body as a result of consuming processed acai berry supplements. It can also cause several problems, ranging from candida to acne to fatigue. There is also green tea extract found in BrainJuice, which adds caffeine to the blend and increases your risk of experiencing side effects usually associated with the use of stimulants. Some of these side effects include dizziness, heartburn, increased heart rate, confusion, convulsions, ringing in the ears, tremors, irritability, and insomnia.

BrainJuice contains some vitamins as well, but taking these vitamins when you do not have a deficiency can lead to side effects. For instance, vitamin B12 can cause problems like itching, swelling, headache, involuntary movements, nervousness, and anxiousness. Be sure to avoid BrainJuice when you are pregnant or breastfeeding. People with existing medical conditions should talk to their healthcare provider before taking BrainJuice.


The official website states:

“If you are usually sensitive to caffeine and other supplements, or if you weight less than 110lbs, you may only need to begin with half a bottle. If it is your first time trying BrainJuice, we recommend starting with half a bottle. Save the rest of the bottle and finish it when you feel is the best time for you. After you become familiar with the effects, decide if drinking an entire bottle at once is right for you.”

Are There Any Customer Reviews For BrainJuice?

BrainJuice claims to help you in many ways, but customer reviews suggest that it is mostly ineffective. For instance:

I have been taking it for over three weeks now, but it fails to offer any energy boost whatsoever. It may improve your concentration a little, but do not expect anything special.

Honestly , my wife and I took them until we finished all the bottles. One every day, and we didn’t see or feel any different at all. Is a waste of money. Maybe everyone is different but they didn’t work for at all.

I have been taking it for quite a while now, but sad to say this stuff does no more than water. I would not recommend it.

Does BrainJuice Offer a Money-Back Guarantee?

BrainJuice claims to come with a 30-day money-back guarantee, but this only applies to unused products so it is actually just a return policy.

Where Can I Buy BrainJuice?

BrainJuice is available through the official website, but you can order through Amazon and several third-party retailers.


1.7 out of 5
BrainJuice Rating

The Nootropic Watchdog does not recommend BrainJuice.

  • 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.

Have Your Say

Get the conversation started by leaving your comments using the form above.