Beef Organ Supplement Benefits: What the Evidence Supports, Organ by Organ

Beef organ benefits are nutritional: liver is dense in vitamin B12, copper and riboflavin, kidney in selenium, heart in CoQ10 and B12. No trial has shown that a capsule dose changes how a woman feels. The evidence supports the nutrients, not bigger claims.*

This page goes organ by organ through what USDA data and published analyses show, what a capsule dose of each organ works out to, and where the evidence stops. It is a companion to our complete guide to beef organ supplements for women.

The short version

Beef organ benefits are measured in food, not in capsules. Liver is dense in B12, copper and riboflavin; kidney in selenium; heart in CoQ10. A two-capsule serving holds about half a gram of fresh tissue per organ, so it adds a modest amount, and no controlled trial has tested it in women.*

What does the evidence say about beef organ supplement benefits?

It supports the nutrient content of the organs as foods, because USDA and published analyses measured it. It does not support effects from capsule doses: we found no controlled trial of beef organ supplements in women. The old idea that eating an organ supports the same organ in you has no controlled trial behind it for any organ.

That is a narrower claim than most labels make, and it is the one the data allow. The nutrient figures are real and come from USDA data for liver, kidney and heart. What is missing is any study that gave a freeze-dried organ capsule to women and measured an outcome.

Why food figures do not transfer to a capsule

USDA reports 100 grams of raw tissue. A capsule holds milligrams of freeze-dried powder. Raw liver is about 70.8 percent water, so 100 grams holds roughly 29 grams of solids, and the 150 mg of liver in a Women Bloom serving is about one 190th of that. The nutrients are the same; the amount is not.*

What is beef liver known for?

Vitamin B12, copper and riboflavin. Per 100 grams raw, USDA lists 59.3 mcg of B12, 9.76 mg of copper and 2.76 mg of riboflavin, plus 290 mcg of folate and 4.9 mg of iron. Liver is also very high in preformed vitamin A, which is why its share of any formula matters.

The full breakdown, with the daily-value arithmetic, is in beef liver benefits for women, and the vitamin A side is in how much beef liver per day. For a capsule, the 150 mg of dried liver in one serving started as about 0.51 g of fresh liver, which by the USDA figures holds roughly 0.30 mcg of B12, 0.05 mg of copper and 0.014 mg of riboflavin. Those are estimates, not measurements of the finished product.

What is beef kidney known for?

Selenium first. USDA lists 103 mcg of selenium per 100 grams of raw New Zealand kidney, with 27.7 mcg of vitamin B12 and 2.12 mg of riboflavin, and only 89 mcg of vitamin A. At 100 mg per serving, our kidney adds about half a microgram of selenium, roughly one percent of the 55 mcg adult allowance.*

The selenium story, including why origin moves the number and why the upper limit is not a worry at capsule doses, is in beef kidney supplement benefits. It is also a useful reminder that more is not the goal: selenium is a mineral where the NIH sets an upper limit, so a food-sized dose is the sensible scale.

What is beef heart known for?

CoQ10 and lean muscle protein. Published analyses put beef heart at 11.3 to 19.2 mg of CoQ10 per 100 grams fresh, and USDA lists 18.5 g of protein, 4.38 mg of iron and 10.8 mcg of B12. A 100 mg capsule dose holds an estimated 0.05 to 0.09 mg of CoQ10, a sliver of a supplement dose.*

The body makes most of its own CoQ10, so the honest framing is that heart is an unusually rich food source, not a replacement for a CoQ10 product. The working, the caveats on cooking loss, and the sources are in beef heart and CoQ10. We do not test for CoQ10 in the finished product, so we print no CoQ10 figure.

What do we know about beef ovary and uterus?

Much less. USDA FoodData Central covers liver, heart and kidney far better than the reproductive organs, so their nutrient content is thin in the published record. Uterus is muscular tissue. We make no measured-nutrient claim for either, and we say so rather than borrow a number.

The ovary and uterus are in the formula at 150 mg and 100 mg. What they are, and what can and cannot be said about them, is covered in beef ovary supplement and beef uterus in a supplement. A page that lists confident benefits for these two organs is going beyond the data.

How much does one serving of organs actually supply?

About half a gram of fresh tissue per organ. By USDA arithmetic, the liver, kidney and heart in a two-capsule serving together supply roughly 0.5 mcg of vitamin B12, about a fifth of the 2.4 mcg adult allowance, and far less of everything else. These are estimates from food data, not measurements of the finished product.*

B12 is the nutrient where this arithmetic is most visible, and even there a serving is a fraction of a day’s allowance. The NIH Office of Dietary Supplements fact sheet on vitamin B12 gives the adult recommendation. Every dose is printed as text on the Supplement Facts page, and the finished-product certificates are on the Lab Tests page.

That is the design, stated plainly: a modest food-form dose of five organs in Women Bloom, alongside collagen, biotin and zinc, not a nutrient-by-nutrient replacement for eating organ meat.*

How should you read the benefits on an organ supplement label?

Look for three things: a named dose for each organ, a source for each nutrient figure, and wording that stays on nutrition. A claim that a capsule “supports” an organ in you rests on tradition, not trials. If the label hides the split between organs, you cannot check any of it.

Many labels print one total, such as 3,000 mg of “organ blend,” without saying how the organs split. Our audit of 59 labels is in what their labels actually reveal, and the checklist for shopping is in how to choose a beef organ supplement. Benefits worth believing are the ones a label lets you check.

Last reviewed: 28 October 2026. This article is general information, not medical advice. Talk to your physician before starting any supplement, especially if you are pregnant or planning a pregnancy.

*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.