Cross-referencing clinical data
A pairing appears on this page only when a trial gave both ingredients together and measured the result. Scopoletin 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.
Catechol and hydroxy-substituted coumarins secreted by roots solubilise ferric iron by chelating it and shifting its redox state. That same chemistry means scopoletin taken alongside an iron salt can bind the metal in the gut lumen rather than leaving it free for uptake. Direction in humans has not been measured, so this is a formulation consideration and a spacing note, not a demonstrated absorption effect either way.
Once scopoletin donates an electron it becomes a phenoxyl radical, and ascorbate can reduce it back. The pair also interacts with the iron chemistry above, because ascorbate favours the ferrous form that coumarins release. The combination is standard antioxidant chemistry rather than a tested clinical pairing.
Scopoletin and quercetin are both glucuronidated and sulfated on their phenolic hydroxyls by UGT and SULT enzymes in the gut wall and liver. Co-dosing them at high amounts means each can slow the other's clearance by occupying the same enzymes. The practical consequence is that plasma levels of a polyphenol blend are not simply the sum of its parts. Size of the effect in people has not been quantified for this pair.
Scopoletin quenches radicals by donating a hydrogen from its phenolic hydroxyl. Dihydrolipoic acid works through thiol chemistry and regenerates other antioxidants in the network. Because they sit at different points, the two do not simply duplicate each other. No human study has tested the combination.
EGCG is a well-documented binder of non-heme iron in the gut. Scopoletin adds a second chelating structure to the same meal. For someone building iron status this stacking matters more than either compound alone, and the practical answer is spacing rather than avoidance. For someone not managing iron intake it is not a concern.
Nothing specific on file for Scopoletin. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.These are the studies our verdict leans on, chosen from the 3 we read for Scopoletin. The full linked list is below.
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.