Brain Food & Brain Food+


Brain Food
  • Do you find yourself having trouble focusing or remembering?

  • Feeling confused or disorganized?

  • Are you dragging through your days, feeling like you are in a fog sometimes?

  • Do you feel as if you’re just not your best self?


Dr. Tennant noticed that many of his patients were complaining of difficulty thinking and were having trouble with memory and recall. Even staff at the Tennant Institute felt that they experienced a mental lull in the afternoon, so he began to research what causes brain fog and what the brain needs to function well and what health supplements and other products were currently on the market.

What is Brain Fog?

The term Brain Fog has been around for a while. It describes the feeling of mental cloudiness or lack of mental clarity that people commonly experience. Usually, brain fog is not a permanent condition. Confusion, forgetfulness, and rapid mood changes are all symptoms of brain fog.

What causes Brain Fog?

Many things can cause mental fatigue, commonly called brain fog: a lack of sleep, if you are under stress, poor diet, dehydration, side effects from medications, neurological disorders, diabetes, or nutritional deficiencies.

What is the most common reason we experience Brain Fog?

Many times we experience brain fog when we do not have enough glucose-based fuel or when there is impaired glucose utilization in the brain. Your brain uses glucose as a substrate for energy but will use ketones for energy when not enough glucose-based fuel is available. Your body can use ketones ingested, or your liver can make ketones from medium-chain triglycerides (fatty acids).

What can I do when I experience Brain Fog?

If this is an ongoing issue, we always recommend that you talk with your healthcare provider to be sure that there is not a more serious health concern. However, if you are looking for a natural, non-stimulant way to manage brain fog, Dr. Tennant’s® Brain Food is designed to provide your brain the fuel it needs for cognitive focus and mental acuity.

Read on to learn why Dr. Tennant's®Brain Food is the best all-natural brain supplement with no stimulants, like caffeine!

Refuel, Recover and Replenish with the right brain fuel

Buy Brain Food


Our brains need a lot of energy. Even though it’s only about 2% of your body, your brain needs 20% or more of the energy you consume.

The brain uses different nutrition than the rest of the body to function optimally. The brain uses ketones as the first energy source and then the liver converts MCTs (medium chain triglycerides) into ketones for the brain to use as fuel.

Dr. Tennant's® Brain Food and Brain Food Plus provide this 1-2 punch for sustained brain energy without additional stimulants.

Give your brain the right fuel

Ketone bodies can feed the brain and can act as primary fuel for cognitive activities.

Beta-HydroxyButyrate (BHB)

Dr. Tennant’s® Brain Food has Beta-HydroxyButyrate (BHB) as DL-3-HydroxyButyric Acid Calcium Salt. BHB is a ketone that the brain utilizes instead of glucose.


Your brain utilizes BHB even more efficiently than glucose. Ketone bodies like BHB can cross the blood-brain barrier for utilization as well as cell membranes and the inner mitochondrial membrane. The primary role of mitochondria is to process the intake of food and oxygen and make energy for your cells. That’s energy for you!

Low levels of GABA and increased levels of glutamate can also cause brain fog. Glutamate is the excitatory neurotransmitter. GABA is the neurotransmitter that makes us feel calm and counters glutamate.
For mental focus, we need a balance of the two. Ketones, such as BHB, are linked to an increased feeling of calmness or state of well-being due to their ability increase GABA signalizing.


MCTs are medium chain triglycerides, such as those found in coconut oil, which your liver can convert directly into ketones. MCTs, which are a type of fatty acid, have benefits beyond regular fats and long-chain triglycerides, in that they have a lower calorie content than other fats, are more rapidly absorbed by the body, and more quickly metabolized as fuel for organs. The MCTs in Dr. Tennant’s® Brain Food are provided as coconut oil fiber. 


But there is more to Brain Food than MCTs and Ketones. Additional ingredients in Dr. Tennant’s® Brain Food formula serve to support ketone activity, palatability, and delivery.

Butyric Acid

Butyric acid is very commonly produced by digestion; and Butyrate, a derivative, is produced by beneficial "good" microbes and helps promote beneficial bacterial colonies.


Calcium is present and helps as a messenger for neurotransmitter synthesis and release and is also involved in long-term processes in the body (memory).

Coconut Oil Fiber

Coconut oil fiber contributes MCTs that support the effectiveness of BHB, as does MenaQ-7 (vitamin K2). K2 was added primarily to assist with supplemented calcium metabolism. BHB as a calcium salt provides 50% of the daily value (DV) of calcium. This prevents supplemental calcium from depositing into soft tissues such as cardiovascular tissue and the formation of plaques. K2 assists calcium storage into bone.

Diatomaceous Earth and Humic & Fulvic (Brain Food Plus Only)

Brain Food Plus has the addition of Diatomaceous Earth and Humic & Fulvic Acids for absorption to help optimize brain function.

Diatomaceous Earth absorbs into the blood stream as silica which plays an important role in many bodily functions and has a direct relationship to mineral absorption. Humic and Fulvic Acids play a critical role in transporting vitamins and minerals to every cell in the body at the molecular level. The addition of Diatomaceous Earth and Humic and Fulvic Acids not only improves the initial transport of vital vitamins, minerals, ketones and fatty acids throughout the body more efficiently, but also works together to optimize brain function at the molecular level.

Fiber - Organic VitaFiber®

Fiber provides a weight management* function as well as a prebiotic function and digestive aid. VitaFiber® is a soluble dietary fiber (prebiotic) that is designed to promote gut health. An added bonus is that this VitaFiber® can also be used as a natural sweetener as its main function is fiber, but it tastes sweet. VitaFiber® is made from organic pea starch without a bitter aftertaste or any preservatives.

K-2 (as MenaQ-7®)

K-2 is also present to ensure appropriate absorption of calcium and to help keep the calcium out of the arteries, also improving overall circulation.


Magnesium also plays an important role in relaying signals between the brain and the body. Magnesium helps develop nerve cells in the brain and aids in brain development, memory and learning.

Organic Veggie Protein

In order for veggie protein to function optimally, “the central nervous system requires various amino acids found in proteins. Amino acids such as tryptophan, tyrosine, histidine, and arginine are used by the brain for synthesis of various neurotransmitters and neuromodulators.” Reference


Phosphorus is critical for brain function and strength. Low levels of phosphorus can often impair breathing and brain function.


The brain needs potassium. Potassium helps brain cells communicate with cells throughout the brain and helps nerves fire properly when stimulated.

ProHydrolase® Protein Enzymes

The ProHydrolase® digestive enzyme group is proven to help digest supplemented protein quickly for easier digestion and absorption, which promotes a feeling of fullness to help curb the appetite.* Also, without the addition of specialized enzymes, undigested protein supplements are not broken down to their amino acid building blocks, and therefore the amino acids are not absorbed by our bodies. These undigested proteins can build up and become toxic in the GI (gastrointestinal) tract.

Sunflower Lecithin

Sunflower lecithin is an emulsifier, but it is also included for its phosphatides, such as phosphatidylcholine and others, that support brain function and mitochondrial activity (energy) in the brain. We use sunflower as these are non-GMO and we can trace them from point source through production to ensure only the purest form of phospholipids are used.

Differenct between Brain Food and Brain Food Plus Dr. Tennant

In Summary...

The brain needs its own fuel (ketones and MCTs) to function optimally.

We know the liver needs to function appropriately to support optimal fuel for the brain, so liver support is included (lecithin, phospholipids and fatty acids).

Digestive health (appropriate flora in the microbiome) is also critical, and this is supported through both ProHydrolase® enzymes and Organic VitaFiber® to round out support of the good bacteria already present in the gut.

Supporting bioavailable fuel to start, combined with cofactors that help sustain and improve cognition, providing additional liver and digestive support make Dr. Tennant’s® Brain Food an incredible solution to improve overall brain health!

*Special Consideration: This product is not intended for weight loss or to diagnose, treat, or prevent any disease. Please consult with your healthcare practitioner if you have diabetes, liver problems, are pregnant or breastfeeding, or are being treated for Alzheimer’s, epilepsy, or Parkinson’s disease. Many people employ a ketogenic diet to induce weight loss. It should be noted that Dr. Tennant’s® Brain Food is not intended for weight loss.



Specifically Lecithin and Phospholipids

Phosphatidylcholine (PC) and phosphatidylinositol (PI) are wonderful for building the outside of the cellular wall but they also help support the liver.

Phosphatidylcholine is a wonderful detoxifying agent and helps detox the body naturally and effectively. When broken down, choline is a wonderful emulsifier. Both PC and PI are wonderful emulsifiers that help break down the fat in the liver.

Cirrhosis of the liver or a fatty liver can be a problem for many people. Regardless of body type or gender, a fatty liver can affect anyone. In fact, studies have shown that “skinny” people are more likely to have a fatty liver than those who are overweight.

What causes this? Fatty foods, alcohol and yes, high-fructose corn syrup. One study even showed that someone consuming high-fructose corn syrup increases the likelihood of a fatty liver by 20x!

The question is: how do we resolve this? Detoxify the liver and clear up a fatty liver. Phosphatidylcholine and phosphatidylinositol certainly help with both of these.

Lecithin is also a tremendous emulsifier and works incredibly well breaking down fat in the liver and removing it from the body in the appropriate pathways.

This one little line " Sunflower Lecithin Fatty Acids and Phospholipids" on the Supplement Facts packs a big punch! It not only helps with detoxification, but is also designed to improve the health of a fatty liver.


Why we use Ketones and not cheaper ingredients other nootropics on the market

Many of the nootropic products on the market include vitamins such as B12 and supplements like St. John’s Wort (and other agents that can increase blood flow and raise blood pressure in the brain), as well as caffeine (a stimulant).

There are dozens of products on the market with prices ranging from $10 to $100, yet they do not meet Dr. Tennant's high expectations for effectiveness and low tolerance for health risk. Some ingredients in the nootropic supplements on the market do help with cognition and mood, but also have significant drug interactions.

Knowing that the brain requires more energy than any other organ in the body and that it uses glucose converted from the food we consume, Dr. Tennant wanted to address what happens physiologically when there was a glucose deficiency.

When the body has no more glucose for the brain, the liver produces ketones. It does this with whatever fuel it has available. In situations where there is not enough food, such as during starvation, the liver uses the body’s fat and then protein (our muscles). This is what is known as a state of ketosis.*

So, if ketones are the body’s backup plan for lack of glucose, it makes sense to look at how to provide ketones to feed the brain.

*Many people employ a ketogenic diet to induce weight loss. It should be noted that Dr. Tennant’s® Brain Food is not intended for weight loss.


Brain Food and Brain Food+ contain NO stimulants, magnesium stearate, GMOs, soy, gluten, corn, sucrose, casein, starch, yeast, wheat, artificial colors, flavors, or sweeteners.

No Caffeine

There is no caffeine or other stimulants in Dr. Tennant’s® Brain Food original or Brain Food + formulas. Dr. Tennant values quality nutrition and avoids gimmicks like adding caffeine.

No Sugar

Monk fruit extract provides a natural flavor and sweetening.

Buy Brain Food


leavesAs with all Dr. Tennant’s health supplements, Dr. Tennant’s® Brain Food is designed with premium ingredients that are:

  • Biologically active
  • All natural
  • Non-GMO
  • Gluten free
  • Made in the USA


Before you grab that Snickers bar or a cup of Joe, substitute Dr. Tennant’s®, good for your body, Brain Food for your afternoon pick me up!


We are bombarded with ads for afternoon pick me ups that are loaded with sugar, caffeine or other "not good for you" ingredients. Next time you are feeling "Brain Fog" try giving your brain what it needs.

Dr. Tennant’s® Brain Food can be mixed with whatever liquid you prefer (has a slight sweet vanilla flavor) or make into a shake.

Give it about 15-20 minutes and you will be amazed at how your brain wakes up!

It is recommended not to take more than four servings a day and not within a four-hour period between servings.

It is not recommended to expose Brain Food to extreme temperatures. You can mix it into a shake with ice but do not freeze. You can mix Brain Food with a warm liquid but do not boil.

support for cognitive performance and brain vitality


Featured Products in This Article:

Dr. Tennant’s® Brain Food: Provides your brain the nutrients it needs for cognitive focus, mental acuity and memory function, and helps eliminate brain fog naturally.

Shop Now



Dr. Tennant’s® Brain Food+ (Plus): Combines Dr. Tennant’s® Original Brain Food with Diatomaceous Earth and Humic & Fulvic Acids for absorption and optimization. Dr. Tennant’s® Brain Food+ provides your brain the nutrients it needs for cognitive focus, mental acuity and memory function, and helps eliminate brain fog naturally.

Shop Now

why choose Dr. Tennant's® supplements


The information provided on this page is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice. Always work with your healthcare provider before starting any supplement program.