What it is
Chlorophyll is a family of plant pigments; many supplements instead use water-soluble chlorophyllin, which is chemically distinct.
Core function and why it is studied
Its composition or proposed mechanism makes digestive function logical research areas. Studies therefore examine digestive tolerance and odor-related outcomes. That biological connection explains why it is studied; it does not by itself establish a meaningful benefit.
What the evidence means
Reliable direct human evidence is not sufficient to support a product-wide benefit claim. Laboratory, animal, or traditional-use evidence should not be presented as a demonstrated human outcome.
How to compare products
Compare species, plant part, extract ratio, solvent, standardized constituents, serving amount, and contaminant testing.