Grass-Fed Beef Organs: What the Claim Covers, Organ by Organ

Grass-fed beef organs are organs from cattle that ate pasture, and on a supplement label the phrase is only as strong as the paperwork behind it. In Women Bloom, all five organs come from New Zealand grass-fed cattle, and each has its own supplier document.

This guide goes organ by organ through what the supplier documents for a beef organ supplement with five New Zealand grass-fed organs actually say, what the claim does and does not prove, and where our own evidence stops. Where the proof is thin, we say so.

The short version

All five organs in Women Bloom, from liver to ovary, are documented as New Zealand grass-fed in each supplier's own wording. That is a traceable sourcing claim backed by supplier documents, not a third-party certification, and it covers the 600 mg of organs in a serving, not the collagen, zinc or biotin.

What does grass-fed mean on a beef organ supplement label?

It means the cattle that supplied the organs ate pasture, but no federal definition is enforced for supplements, so the meaning is whatever the brand and its supplier document. The word is a starting point. The useful question is which document backs it, for which organ, and in whose words.

Supplement labels are not approved before sale, so the claim is only as strong as the paperwork behind it. Our companion piece on why New Zealand origin matters covers the farming side, and the one on what grass-fed legally means covers the rules. This page does the part neither does: it reads each organ's document.

Which of the five beef organs in Women Bloom are grass-fed?

All five: liver, heart, kidney, uterus and ovary, at 600 mg together per serving. Each comes from New Zealand cattle and has its own supplier document. The wording differs from one document to the next, which is why we quote each one exactly instead of rounding them into a single phrase.

Liver, uterus and ovary

The liver document, from Starboard Bio Limited, reads “Grass-fed, free-range, born and raised in New Zealand.” The uterine tissue document, from the same supplier, reads “Grass-fed, free-range New Zealand bovine.” The ovary comes from Grassland Bovine Limited, and its document is a specification, not a certificate of analysis: “New Zealand grass-fed,” describing freeze-dried bovine female reproductive organs of human consumption grade. A specification describes the material; it does not report an assay.

Kidney

The kidney document, from Waitaki Biosciences, says “Pasture-fed New Zealand prime beef.” That is a different word from grass-fed, and we report it as the supplier wrote it. It describes the same thing, cattle raised on pasture, but a careful reader should see the wording as it is, not as we would tidy it.

Heart

The heart's certificate of analysis, also from Starboard Bio Limited, records New Zealand origin and inspection by the New Zealand Food Safety Authority. The grass-fed statement for the heart is on a separate certificate, and we describe it only as that. You can read every document, with batch numbers, on our Lab Tests page.

Is the grass-fed claim on these organs certified by a third party?

No. These are supplier documents: certificates of analysis from the suppliers and one specification, not a grass-fed seal from an outside certifier. They can be checked, with supplier names and batch numbers, but they are weaker proof than an audited standard. Our one independent test, by CTLA, covers allergens, not diet.

We say this plainly because the word “grass-fed” invites readers to assume a certifier stands behind it. Here a named supplier stands behind it, and the document says so. If you want to know what each kind of document can and cannot prove, our guide to reading a supplement certificate of analysis goes line by line.

Does grass-fed change what is inside a beef organ?

Sometimes, in measurable ways. A PubMed-indexed review of research spanning three decades found that grass-based diets can raise conjugated linoleic acid and omega-3 fats in beef per gram of fat. It covered muscle meat, not organ powder, so we do not turn the word into a nutrient claim.

The review is A review of fatty acid profiles and antioxidant content in grass-fed and grain-fed beef (Nutrition Journal, 2010). It also reports variable effects on palatability, and we know of no study of freeze-dried organ powder in capsules.

Origin is a real variable too. USDA FoodData Central lists raw beef kidney from New Zealand at 103 mcg of selenium per 100 g, about 27% lower than the 141 mcg in its unspecified-origin kidney entry. Origin moves the number, though not always upward, and 100 mg of dried kidney is a small fraction of a 100 g sample either way.

What does the grass-fed claim not cover in a serving?

It covers the 600 mg of beef organs in a two-capsule serving. It does not cover the 500 mg of collagen peptides, the 10 mg of zinc or the 10,000 mcg of biotin. Our collagen is bovine, but the panel does not name the animal, and we make no grass-fed claim for it.

Of the 1,120 mg of declared ingredients in a serving, the organs are 600 mg, about 54%. The collagen line reads “Collagen Peptides Type I & III, 500 mg,” exactly as printed, and the zinc is 10 mg as zinc oxide. Those ingredients are not animal-diet claims, and we do not stretch the grass-fed wording over them. The full panel is on our Supplement Facts page.

Is New Zealand origin the same thing as grass-fed?

No. Origin names where the cattle were raised, while grass-fed describes what they ate. New Zealand pasture farming makes the two overlap often, but they are separate statements, and a document can carry one without the other. The heart's certificate of analysis, for instance, records origin and inspection, not diet.

That is the reason we publish documents organ by organ. A single line such as “grass-fed New Zealand organs” compresses five different documents into one phrase, and some detail is lost in the compression. Reading the originals takes a few minutes and settles the question.

How can you check a grass-fed claim on any beef organ supplement?

Ask four questions: which organs the claim covers, whether each has its own document, whether a certifier is named, and whether the wording describes diet, origin or both. A label that answers none of them gives you a word, not evidence. The FDA does not require label approval before a supplement is sold.

1. Which organs? A claim for “beef organs” may cover one organ or all of them.
2. Is there a document per organ, with a supplier name and a batch number?
3. Is a certifier named, and is its standard public?
4. Does the wording say diet, origin, or both?

The FDA's dietary supplements page explains how these products are regulated. Brands that publish their documents make the checking easy; brands that do not leave you with the adjective.

What is the practical takeaway on grass-fed beef organs?

Treat “grass-fed” as a claim to verify, not a guarantee. For Women Bloom, the evidence is five supplier documents naming New Zealand, each in its own wording, covering the 600 mg of organs. It is checkable and traceable. It is not a certification, and it says nothing about collagen, zinc or biotin.

Beef organs are a whole-food ingredient, and what a capsule can say about your body is a separate question from where the cattle grazed.* Sourcing is the part we can document, so we document it, and where our proof stops we say so. Talk to your physician before starting any supplement, especially if you are pregnant, nursing or on medication.

Last reviewed: 6 November 2026. This article is general information, not medical advice.

*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.