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.
Leptadenia hastata leaf is eaten as a vegetable across the Sahel and carries non-heme iron alongside polyphenols that bind it. Ascorbate taken in the same meal keeps more of that iron in the absorbable ferrous form. The interaction is a general plant-food one, well described and not specific to this species. It applies to the meal, not to iron status weeks later.
Polyphenol-rich leaf preparations form insoluble complexes with non-heme iron, which lowers what is available for uptake in the same meal. Anyone taking an iron supplement for low iron status has reason to separate it from a concentrated leaf preparation. The direction is interference. Two hours of separation is the usual practical answer.
Plant leaf and seed material carries phytate, which forms poorly soluble complexes with divalent zinc. Traditional preparation steps such as long cooking or fermentation reduce phytate and soften the effect. This is generic plant-matrix chemistry rather than a finding about this species. It matters most where the leaf makes up a large share of daily intake.
Flavonoids in leaf material sit largely in the aqueous phase while tocopherol works at the membrane, and the two can regenerate one another in the radical chain. Antioxidant work on this plant has been done in rodents and measures markers rather than outcomes. The pairing is a redox argument at mechanism level. A marker moving is not the same as anything a person notices.
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.