Sourcing
Bought to a specification, not to a price
Ingredient sourcing in this category is usually a story. Ours is a specification — because a specification is the only part a laboratory can check.
L-Citrulline
Pharmaceutical-grade, fermentation-derived, pure L-citrulline — not citrulline malate. That distinction is the whole point. Citrulline malate is sold as a ratio, usually stated as 2:1, and published NMR analysis of five UK products found four were nowhere near it. One delivered just over half the citrulline stated on its label.
Pure L-citrulline has no ratio to be wrong about. Three thousand milligrams is three thousand milligrams.
Shilajit extract
A purified resin extract standardised to a minimum 50% fulvic acid — the same standardisation as the material used in the published human research, verified per batch rather than taken on trust.
You will see 70% and 80% elsewhere. Judge that sceptically: a higher number usually reflects a cheaper assay rather than a better extract, and published analysis of the commercial market found only 14 of 25 products contained measurable fulvic fractions at all.
Catuaba bark
A bark extract from the Brazilian Atlantic forest. Two things we will say plainly: the botanical species supplied under this name varies, so ours is identified per batch on the certificate; and published analysis has found adulteration in a substantial share of commercial catuaba samples, which is precisely why identity testing is not optional.
Made in London
Blended, encapsulated and packed in London NW6, not repackaged from a finished import.
What we will not print
- A harvest altitude. Nobody can verify one.
- A named valley, village or family. It is set dressing.
- A purity percentage produced by a cheaper test and presented as a better material.
- “Third-party tested” as a phrase on its own. We publish the actual result instead.