Cross-referencing clinical data
A pairing appears on this page only when a trial gave both ingredients together and measured the result. Chinese Plumbago 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.
Naphthoquinones like plumbagin accept an electron to form a semiquinone that regenerates superoxide, and they also form Michael adducts with the cysteine thiol of glutathione. Both routes draw down the cellular glutathione pool. Anything that raises glutathione blunts the quinone's oxidative signalling, so the two work against each other rather than together.
NAC quenches naphthoquinone reactivity in two ways: it raises glutathione supply and its own thiol adds across the quinone ring. In laboratory work NAC is routinely used to demonstrate that a plumbagin effect is oxidant-dependent. Anyone combining them should expect the plumbagin signal to be dampened.
Ascorbate is a one-electron donor, and in a system containing a naphthoquinone plus free iron or copper it can push the cycle rather than stop it. The direction of the interaction depends heavily on metal availability and oxygen tension, which is why in vitro results point both ways. This is a laboratory chemistry note, not a human finding.
NQO1 uses a flavin cofactor derived from riboflavin to convert quinones straight to the hydroquinone, bypassing the radical-generating one-electron step. Riboflavin status therefore sits upstream of how a person handles a naphthoquinone load. The relationship is settled enzymology rather than a tested supplement pairing.
Piperine slows intestinal and hepatic conjugation enzymes that clear polyphenolic and quinone compounds on first pass. Applied to plumbagin the expected result is higher plasma exposure per milligram. Since plumbagin is a reactive molecule with a narrow margin between an active and an irritant dose, raising exposure is not automatically an improvement.
Nothing specific on file for Chinese Plumbago. 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 1 we read for Chinese Plumbago. The full linked list is below.
2 sources behind our Chinese Plumbago 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.
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.