Cross-referencing clinical data
A pairing appears on this page only when a trial gave both ingredients together and measured the result. Uterus has none that clears that bar.
Stitching two separate single-ingredient studies into a pairing is the one thing this engine will not do. When a study of the combination itself holds up at source, it lands here with its citation.
No invented synergy. Where actives were studied on their own rather than together, the record shows each on its own evidence, never a combined effect no trial measured.
Research strength. Research strength says how much work stands behind the combination. It is never a product score.
Independent record. Every finding is cited to a named trial, dated, and never written by the brand.
20 pairings are live across the library today. Checked 20 July 2026.
No study gave these as a pair, so they are not in the card above. But the reason they belong together is settled biochemistry, not a guess, so it is worth knowing.
A freeze-dried tissue powder carries whatever the tissue held, and smooth muscle tissue holds myoglobin and therefore heme iron. Heme iron is absorbed by a different route than the non-heme iron in a mineral supplement, so the two add rather than compete. The contribution from a capsule-sized dose of tissue powder is small compared with a dedicated iron supplement, and the record should say so rather than imply otherwise.
Cobalamin is bound to protein in animal tissue and released by gastric acid and pepsin before intrinsic factor takes it on. A tissue-derived glandular therefore carries some B12 in its natural protein-bound form. How much survives freeze-drying and how much a typical serving delivers is rarely stated on labels, so it should not be counted toward a B12 target without an assay.
Ascorbate keeps iron in the ferrous state and forms a soluble complex with it, which raises the absorbed fraction of the non-heme iron present in any food or tissue matrix. It also supports the hydroxylase enzymes needed to build collagen from the amino acids a tissue powder supplies. Both mechanisms are settled biochemistry independent of the tissue source.
Glandular capsules are whole tissue, so releasing the bound cobalamin and digesting the protein depends on adequate gastric acidity and pepsin activity. That is the stated reason glandular formulas often include an acid source. The reasoning is plausible on digestive physiology, but no study has tested whether adding it changes what is absorbed from a tissue powder.
Organ tissue carries a connective tissue fraction, so a glandular powder contributes glycine, proline and hydroxyproline alongside its muscle protein. Adding collagen peptides feeds the same amino acid pool at a much higher density per gram. Count the two together rather than as separate contributions.
Methionine synthase needs both methylcobalamin and 5-methyltetrahydrofolate to remethylate homocysteine to methionine. Because a tissue-derived preparation supplies B12 and not folate, the two are normally formulated together. Supplying folate alone at high intake can mask the blood picture of low B12 status while the neurological picture continues, which is the standard reason the pair is dosed together.
Animal-derived tissue preparations and dang gui appear together in classical formulas built around what that system calls blood supplementation. That is a traditional classification and should be read on its own terms rather than translated into physiology. No study has tested the combination.
Animal tissue supplies zinc in a form absorbed more readily than plant-bound zinc, since there is no phytate competing for it. Zinc is also a cofactor across the enzymes handling protein synthesis and turnover. The amount from a capsule of tissue powder is modest and should not be counted against a daily zinc target without an assay on the batch.
Nothing specific on file for Uterus. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.1 source behind our Uterus verdict: peer-reviewed studies and registered clinical trials. Every one links straight to PubMed, the journal, or ClinicalTrials.gov. Read them yourself.
Evidence surfaced via Semantic Scholar (Allen Institute for AI) and ClinicalTrials.gov. Ranked by study type and citation weight, not cherry-picked.
Read this carefully. These are 163 voluntary, unverified reactions reported to the FDA (openFDA). The number mostly reflects how popular Uterus is, not how risky it is. A report is not proof Uterus caused anything. It is a signal of what to watch for, nothing more.
Source: openFDA adverse-event reports. Voluntary reporting, not an incidence rate.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.