Supplement analysis backed by scientific evidence · PT

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Limited evidenceGeneral health

Beef Organ Complex

Freeze-dried liver, heart, kidney and spleen in capsules, sold on the idea that eating an organ supports the same organ in you. Organ meats are genuinely nutrient-dense as food, but no clinical trial has tested these capsules, and the vitamin A they contain is the one thing capable of causing real harm.

Evidence last reviewed: August 2026

What the science says

  • "Like supports like" glandular theory Limited evidence

    There is no clinical trial literature on multi-organ glandular capsules in humans, and no mechanism by which orally digested tissue would be routed to the corresponding organ. Peptides and hormones in the powder are broken down in the gut like any other protein.

  • Nutrient density of organ meats Limited evidence

    Reviews of organ meat confirm that liver, heart and kidney are exceptionally rich in vitamin A, B12, iron, copper and CoQ10 — as food, in portions of tens of grams. A few capsules deliver 1–3 g of dried powder, a small fraction of that, so the nutritional case for the capsule form is much weaker than for the food.

  • Vitamin A is the real risk Strong evidence

    Reviews of vitamin A toxicity document liver injury, intracranial hypertension and bone effects from chronic high retinol intake, with liver being by far the richest dietary source. Stacking liver capsules with a multivitamin and cod liver oil is a plausible route to exceeding the tolerable upper intake.

Dosage & safety

Studied doseTypical label doses are 3–6 capsules per day, roughly 2–3 g of freeze-dried organ powder. No dose has been studied for any outcome.
SafetyThe main hazard is preformed vitamin A: liver-containing products can push chronic intake past the tolerable upper limit, especially when combined with other supplements. Pregnant women should avoid liver-based products entirely because of teratogenicity. People with haemochromatosis or Wilson's disease should avoid the added iron and copper. Sourcing matters — organs concentrate cadmium and residues, and prion risk means the origin of bovine tissue is not a trivial detail.

Scientific references

Where to buy

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