Can You Take Beef Organ Supplements While Pregnant?

Ask your obstetrician or midwife before taking one, and there is a specific reason worth knowing before that appointment: beef liver is a concentrated source of preformed vitamin A, and preformed vitamin A intake is something clinicians watch closely during pregnancy.

We make a beef organ supplement, so this page is written to be checked rather than trusted. Every figure below comes from the NIH, from USDA data, or from our own published label — and the most useful part is the section where we tell you what we cannot measure.

Can you take beef organ supplements while pregnant?

That is a decision for your obstetrician or midwife, not for a label. The reason it needs a clinician rather than a rule of thumb is preformed vitamin A: beef liver is one of the most concentrated food sources there is, and pregnancy is the one situation where intake of preformed vitamin A has a firm ceiling attached to it.

That is not the same as saying an organ supplement is unsafe. It means the question depends on the amount, on what else you are already taking, and on where you are in the pregnancy — three things your clinician knows and a website does not.

Why does beef liver come up in pregnancy guidance?

Because preformed vitamin A behaves differently from the beta-carotene in vegetables. The NIH Office of Dietary Supplements sets the tolerable upper intake level for preformed vitamin A at 3,000 mcg RAE per day for adults aged 19 to 50, including during pregnancy, and 2,800 mcg for ages 14 to 18.

The NIH is specific about which form matters: excessive intakes of preformed vitamin A — but not beta-carotene or other provitamin A carotenoids — can cause birth defects, which is why its guidance on supplements during pregnancy advises keeping preformed intakes well below the ceiling rather than merely under it.

Where liver sits on that scale

Raw beef liver carries about 4,970 mcg RAE of vitamin A per 100 grams, per USDA FoodData Central. Roughly 60 grams of it — a small portion, less than a deck of cards — reaches the 3,000 mcg ceiling on its own. That is the whole reason liver has its own line in pregnancy advice, and it applies to liver as a food long before it applies to a capsule.

How much preformed vitamin A is in a beef organ supplement?

We cannot tell you, and neither can most brands. Our Supplement Facts panel declares biotin, zinc, collagen peptides and each of the five organs by weight. It does not declare a vitamin A amount, because we have not run a finished-product assay for it — so we publish no figure.

What we can give you is the arithmetic to take to your appointment. A two-capsule serving contains 150 mg of freeze-dried beef liver. Freeze-drying removes water, and USDA records raw beef liver as roughly 70.8% water, so 150 mg of the dried powder corresponds to about half a gram of fresh liver. Set that against the 60 grams that reaches the ceiling and you can see the scale for yourself.

Why we will not turn that into a number

An estimate built from a food database is not an assay. Vitamin A content in liver varies with the animal's own diet, and freeze-drying concentrations are not identical batch to batch. Publishing a precise figure we have not measured would be exactly the kind of confident claim this page exists to warn you about. If a brand gives you a vitamin A figure for an organ capsule, ask which certificate it came from.

Is the biotin a problem during pregnancy?

Not on the grounds of dose. The Food and Nutrition Board has never established a tolerable upper intake level for biotin, because the evidence does not show toxicity from high intakes, and the excess is excreted in urine. The adequate intake is 30 mcg a day during pregnancy, the same as for other adults.

The issue with high-dose biotin is practical rather than toxicological, and pregnancy is precisely when it becomes relevant: it interferes with a number of common laboratory immunoassays. Pregnancy involves a lot of bloodwork — thyroid panels and hCG among them, both of which appear on the affected list. The NIH biotin fact sheet sets out the intake figures, and we wrote a full article on biotin and blood test interference because it deserved more than a footnote.

The one sentence that matters

Tell whoever draws your blood what supplements you take, ours included, and tell them the biotin amount. A result distorted by an unmentioned supplement is a far more likely problem than the supplement itself.

Is a beef organ supplement the same as a prenatal vitamin?

No, and it is not built to be one. Prenatal vitamins are formulated against pregnancy requirements — folic acid, iron and iodine in specified amounts, at doses chosen for that purpose. A beef organ supplement is a whole-food ingredient product with a different design brief entirely.

Women Bloom is formulated for energy, women's balance, and skin, hair and nail support.* It is not a prenatal, it is not sold as one, and it should not be substituted for one. If you are pregnant or trying to conceive, the prenatal is the product your clinician will want to talk about first. For what these formulas are and are not more generally, start with our complete guide to beef organ supplements for women.

What should you bring to the appointment?

The full Supplement Facts panel, with every amount in text. A clinician cannot assess a supplement from a product name or a photograph of a bottle. They need the ingredient list and the milligrams, and they need to see it on a page rather than hear it described.

This is the part where transparency stops being a marketing word. Our full panel is published in text on the Supplement Facts page, every organ with its own weight, and the certificates including the lot 0125252 finished-product assay are on the Lab Tests page. Both are printable, and both are what your clinician actually needs.

Most brands cannot give you this

When we audited 59 beef organ supplements from 43 brands, 17 of the 40 multi-organ products published no per-organ amounts at all — the method and the full dataset are in our label transparency index. If you are pregnant and considering any supplement, the first question is not whether it works. It is whether you can put the numbers in front of a clinician.

What this page is not saying

It is not saying that beef organ supplements are dangerous in pregnancy, and it is not saying they are fine. Neither statement would be honest. There is no controlled trial of a beef organ supplement in pregnancy, so nobody can tell you the answer from evidence — including us, and including any brand that sounds more certain than this.

What exists is a well-documented ceiling on preformed vitamin A, a food that sits high on that scale, and a capsule containing a small amount of that food. Those three facts belong in a conversation with a clinician, not in a purchase decision made alone at midnight.

The short version

Ask your obstetrician or midwife. The reason is preformed vitamin A: the ceiling in pregnancy is 3,000 mcg RAE a day for adults aged 19 to 50, and beef liver reaches it in roughly 60 grams. A two-capsule serving carries 150 mg of freeze-dried liver, around half a gram of fresh tissue, but we publish no vitamin A figure because we have not assayed the finished product. The biotin is a separate and smaller question — no upper limit has ever been established for it, and the real issue is that it can distort common blood tests, so mention it before any draw. Women Bloom is not a prenatal vitamin.* Bring the panel to your appointment; it is on our Supplement Facts page, in text, every dose declared.

Last reviewed: August 2026. This article is general information, not medical advice. If you are pregnant, breastfeeding or trying to conceive, talk to your obstetrician, midwife or a registered dietitian before starting or continuing any supplement.

*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.