Beef Liver and Organ Supplements: What the research Says (UK 2026)

Important: Beef liver is very high in vitamin A. The NHS says avoid liver and liver products if you are pregnant and do not take supplements containing vitamin A (retinol) in pregnancy. If you are pregnant, trying to conceive, over 60, have liver disease, take a vitamin A, fish liver oil or retinoid medicine, or take any regular medication, check with your GP or pharmacist before trying these.

What are beef organ supplements?

Desiccated (dried) beef liver or organ capsules are liver, and sometimes heart, kidney, spleen or pancreas, that has been freeze-dried at low temperature, powdered and put into capsules. A typical serving is around 3g of powder, made from roughly three to four times that weight of fresh organ. They became popular through "ancestral" and carnivore diet communities as a way to eat offal without cooking it.

In the UK they are sold as food supplements. The Food Standards Agency says food supplements are regulated as food, are not medicines, and are not intended to treat or prevent disease. That means there is no pre-approval of the product, the dose or the claims before it goes on sale, and the MHRA (the medicines regulator) only gets involved if a product makes medicinal claims.

What they claim

Brands and influencers typically say organ capsules:

• act as "nature's multivitamin", covering nutrient gaps
• raise energy and reduce tiredness
• support hormones, fertility and skin
• support iron levels
• are more "bioavailable" (better absorbed) than synthetic vitamins

What the evidence shows

Why vitamin A is the key issue

Vitamin A from animal foods is "preformed" vitamin A (retinol), which the body stores in the liver. Adults need about 600 to 700 micrograms a day. The NHS advises not eating liver or liver products more than once a week, and says that if you eat liver weekly you should not take supplements that contain vitamin A. It also notes that more than 1.5mg (1,500 micrograms) a day on average over many years may affect bone health, which matters most for older women.

The European Food Safety Authority kept its adult upper limit at 3,000 micrograms a day in 2024, based on risk to an unborn baby, and said European adults are unlikely to exceed it if liver and offal are limited to once a month or less. It advised that women planning pregnancy or who are pregnant should not eat liver products.

Daily liver capsules are, in effect, eating a small portion of liver every day. Vitamin A content of liver varies a lot with the animal's diet and age, and none of the three product pages we checked gave a clear vitamin A figure per serving in the main listing. A 2025 review describes how long-term excess vitamin A damages the liver, and a 2026 UK case report linked raised pressure around the brain in a teenager to a vitamin A-containing supplement.

Who might reasonably try them

• Adults who do not eat offal but want some of its nutrients, and who are not pregnant, not trying to conceive and not taking other vitamin A.
• People who would rather take a small food-based serving occasionally than a multivitamin, accepting the dose is uncertain.

A practical approach is to treat liver capsules like liver: not every day, and not on top of a multivitamin or fish liver oil that contains vitamin A.

Who should be careful

• Pregnant or trying to conceive: avoid. This is clear NHS advice for liver and vitamin A supplements.
• Older adults, especially women at risk of osteoporosis: the NHS bone-health guidance on 1.5mg a day applies.
• Anyone taking retinoid medicines (such as isotretinoin for acne) or other vitamin A supplements, including cod liver oil and some multivitamins.
• People with liver disease, or who drink heavily.
• People with gout or high uric acid: organ meats are rich in purines.
• Anyone with symptoms of low iron or tiredness: see your GP for a blood test rather than self-treating.

If you are unsure, show the label to a pharmacist.

If you want to try it: what to look for

• Vitamin A per serving on the label or certificate of analysis. If a brand cannot tell you, assume it is significant.
• Published lab testing for microbes and heavy metals, not just "third-party tested".
• Clear sourcing: country, farm type, and whether "organic" is certified or aspirational.
• Simple ingredients: organ powder and a capsule shell, no fillers.
• A UK seller registered as a food business, with a UK address, so UK food law applies.
• A blend with less liver (liver plus heart and kidney) if you want organ nutrients with less vitamin A per capsule.

The products we checked

Ancestral Supplements Grass Fed Beef Liver: best-known option

The market-leading liver capsule, sold in the UK through Healf at £40.99 for 180 capsules. The label is just freeze-dried liver from New Zealand and Australian pasture-raised cattle in a gelatin capsule, with a suggested six a day. Caveat: "third-party tested for purity" is stated but no lab or results are shown, and vitamin A per serving is not given.

Hunter & Gather Grass Fed British Beef Liver Capsules: British sourcing

A UK brand using liver from grass-fed British cattle, freeze-dried, with no fillers, at £50 for 180 capsules and a flexible two to six a day. Caveat: the dearest of the three, with no mg per capsule, vitamin A figure or lab testing on the page, and marketing about energy and hormones that goes beyond the evidence.

APE Nutrition Organic & Grass-Fed Beef Organs: most transparent testing

A blend of 50% liver, 25% heart and 25% kidney at £39.99 for 180 x 500mg capsules. APE publishes batch lab results for microbiology and heavy metals, the most transparent testing we found. Because only half is liver, each capsule carries less vitamin A than pure liver. Caveat: despite the "organic" name, APE says it sources from both certified organic and non-organic European farms, and its pregnancy FAQ is less cautious than NHS advice.

Is eating liver better than taking capsules?

Nutritionally they are similar. A portion of cooked liver once a week, within NHS advice, gives you the same nutrients for a fraction of the price, and you know roughly how much you are eating. Capsules suit people who cannot face the taste, but the convenience makes it easy to take them every day, which is more liver than the NHS suggests.

Bottom line

Beef organ capsules are dried offal, not a proven longevity or energy supplement. They are nutrient-dense, but daily use can add up to a lot of vitamin A, and brands rarely tell you how much. If you try them, choose one with published testing and clear sourcing, take them occasionally rather than daily, do not combine them with other vitamin A sources, and avoid them entirely if you are pregnant or trying to conceive. Check with your GP or pharmacist first if you take any medication.