Healthier People, Healthier Planet

Grass-Fed Kidney


150 capsules

Raised and processed fresh in America, Blue River Herbs Grass-Fed Kidney will provide you with a synergistic combination of vitamins, minerals and enzymes in a form that is readily usable by your body.

The Law of Natural Medicine states, “Like Feeds Like.”

To strengthen your kidneys, eat kidney.

Male testes have been called the “external kidneys” because of their close resemblance.

In Chinese Medicine, the kidneys hold a revered position as the organs of longevity. Ancient Chinese wisdom teaches that if you want to stay young into old age, you must protect and nourish your kidneys.

Although it should be very obvious, modern medicine fails to recognize the strong connection between the kidneys and longevity.

I’m sure you’d agree that reproductive capacity is one of the most important characteristics of youth. After all, when a woman reaches menopause she is no longer able to reproduce.

The kidneys have a close relationship with the reproductive system in both men and women.

In fact, the male testes are so similar to the kidneys that they have been called “external kidneys”.

According to Chinese medicine, the kidneys rule the bones.

What is one major sign of aging?

Osteoporosis, a condition where bone density is significantly diminished.

Other signs of weak kidneys are frequent urination, waking in the middle of the night to urinate, and hearing disorders such as tinnitus (with a low pitch) or deafness.

Let’s explore these ancient concepts in modern biochemical terms…

The Kidneys and Vitamin D

There is only one biologically ACTIVE form of Vitamin D, and it is produced in the kidneys by the enzyme 25-hydroxyvitamin D3 1-alpha-hydroxylase. It is called calcitriol (1,25-dihydroxycholecalciferol or 1,25-dihydroxyvitamin D3, abbreviated 1,25-(OH)2D3).

Calcitriol circulates in the blood as a hormone and regulates the concentration of calcium and phosphate in the bloodstream to promote the healthy growth and remodeling of bone.

It looks like the kidneys do rule the bones!

Another Powerful Hormone Produced by the Kidneys

Erythropoietin controls red blood cell production. It is produced by the kidneys and acts on the bone marrow to stimulate the production of mature red blood cells. By stimulating red blood cell production, erythropoietin increases the oxygen-carrying capacity of the blood and thereby increases performance and endurance.

In addition to its critical role in red blood cell production, erythropoietin has a range of actions including stimulating the development of new blood vessels (angiogenesis) and inducing the proliferation of smooth muscle fibers. It can also increase iron absorption.

Multiple studies have suggested that erythropoietin improves memory.

Enzymes Found in the Kidneys

The kidneys are home to a significant number of enzymes involved in maintaining homeostasis in the body. Among these are: carbonic anhydrase, renin, aspartate transaminase, renal-specific lactate dehydrogenase, gamma-glutamyl transpeptidase (GGT), and L-Arginine:Glycine AmidinoTransferase (AGAT).

Carbonic Anhydrase

Carbonic anhydrase catalyzes the rapid interconversion of carbon dioxide and water to bicarbonate and protons (and vice versa). Without carbonic anhydrase, this reaction occurs, but at a much slower rate. In fact, carbonic anhydrase increases the rate of this reaction by 15,000 to 15,000,000 times!

This reaction is critical to maintaining the acid-base (pH) balance of blood in the narrow range of 7.35 to 7.45.

Aspartate Transaminase / Serum Glutamic Oxaloacetic Transaminase (SGOT)

Most people don’t realize that the body is the greatest recycling machine. By now, most of us have heard the saying “Reuse, Renew, Recycle”. Well, the body reuses proteins all the time. I mean, it spent a bunch of energy to get the amino acids (building blocks) in the first place, then to transport them to where they were needed, and lastly a whole lot more energy to organize them into proteins. Wouldn’t throwing them away be a waste?

Well, that’s where aspartate transaminase comes in. It is found in the heart, liver, kidneys and pancreas and catalyzes a reaction that is crucial for both the destruction and creation of proteins. When a protein no longer functions properly or is no longer needed, aspartate transaminase will step in to renew and recycle those amino acids.


Although commonly called a hormone, renin is actually an enzyme. it is produced in the kidneys and participates in the body’s Renin-Angiotension System (RAS). The RAS regulates the body’s arterial blood pressure by altering the balance between blood plasma, lymph and interstitial fluid and controlling arterial vessel constriction.

Renal-Specific Lactate Dehydrogenase (LDH)

The highest concentrations of lactate dehydrogenase are found in the heart, skeletal muscle, liver, kidney, brain and red blood cells. It converts muscle lactic acid into pyruvic acid and back. This is a critical reaction in the metabolic process that ultimately produces ATP.

LDH works to prevent muscle failure and fatigue in a two ways. First, it promotes energy (ATP) production. Second, the production and removal of lactate from the cell by LDH acts as a buffer to decrease muscle acidosis. Muscle acidosis is felt as aches and fatigue after a long workout. Having a substantial supply of LDH will ward off fatigue by enhancing this buffer effect.

Gamma-Glutamyl Transpeptidase (GGT)

GGT transfers gamma-glutamyl functional groups between molecules. Although this may sound boring, it is critical for the proper functioning of glutathione, the body’s master anti-oxidant.

Not only does glutathione protect your cells, but it is also required in DNA synthesis and repair, protein synthesis, and enzyme activation. Glutathione affects every system in the body, especially the immune system, the nervous system, the digestive system and the lungs.

A sufficient amount of GGT ensures that glutathione is maintained at healthy levels. GGT also plays an important role in drug and xenobiotic detoxification.

L-Arginine:Glycine AmidinoTransferase (AGAT)

AGAT is primarily found in the kidneys and pancreas. It is responsible for catalyzing the first rate-limiting step in the synthesis of creatine. A deficiency of AGAT results in creatine deficiency in the body.

Creatine helps to supply energy to all cells in the body by increasing the production of adenosine triphosphate (ATP), aka cellular energy. Sufficient amounts of AGAT are required to ensure the body can produce the optimal amount of creatine.

Why Grass-Fed?

An animal’s diet affects the flavor and quality of its tissues. Animals raised on pasture are eating their ideal diet of grass and weeds. These animals don’t need hormones or antibiotics because they grow strong and stay vibrant by eating their natural diet.

Grass-fed animals are significantly healthier than their feed-lot counterparts. This difference is observable in the higher nutrition content and quality of their meat and organs.

Raising animals on pasture is healthy for people, great for the animal and better for our environment.

Blue River Herbs 100% Grass-Fed Kidney


Blue River Herb’s grass-fed kidney comes from 100% grass-fed, happy cows living in the fresh air and sunshine of good ‘ol America.

They are not finished in feed lots or on grain like most ‘grass-fed’ meats found in stores.

At Blue River Herbs, we use the highest quality grass-fed kidney and process it fresh to ensure that you receive the most potent product possible with the maximum healing power preserved.


† 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.


What This Means

When nutrients come together in specific quantities and ratios, their power becomes amplified.

With nutrient synergy, the sum is greater than the parts.

1 + 1 = 3 or more