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Ginseng Extract: Ginsenosides, Standardisation and Root vs Leaf

Ginseng is the most commercially mature botanical in the supplement category and one of the most difficult to buy well. The name covers several distinct species, several plant parts, two processing routes that produce genuinely different chemistry, and a standardisation…

Lutein vs Zeaxanthin: Ratios, Forms and Formulation Guide

Lutein and zeaxanthin are the two carotenoids most often specified together, and the two most often confused on a specification sheet. Both come from the same commercial source — marigold (Tagetes erecta) — and the two can appear in a…