Cross-referencing clinical data
A pairing appears on this page only when a trial gave both ingredients together and measured the result. Leptadenia 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.
Leaf material of this type is consumed as a vegetable and carries non-heme iron alongside polyphenols that bind it. Ascorbate in the same meal reduces ferric iron to the ferrous form and competes with the binding polyphenols. The interaction is meal-level and well characterised for plant foods generally. It is not specific evidence about this plant.
Polyphenol-rich leaf preparations bind non-heme iron and lower the fraction available for uptake. Anyone taking an iron supplement for low iron status has a reason to separate it from a concentrated leaf preparation by a couple of hours. The direction here is interference, not benefit. Heme iron from animal foods is not affected the same way.
Phytate present in plant material forms poorly soluble complexes with zinc. Traditional preparation steps such as soaking, fermenting or long cooking lower phytate and reduce the effect. This is a general plant-food interaction rather than something measured for this specific plant. Spacing a zinc supplement away from a large plant-material dose is the practical response.
Nothing specific on file for Leptadenia. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.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.