Zinc Bisglycinate Chelate
Zinc Bisglycinate Chelate is a unrated form of Zinc, used in 833 on-market products and providing 30.6% elemental zinc by weight.
833
on-market products
unrated
quality tier
30.6%
elemental fraction
Basis: Zn(C2H4NO2)2, anhydrous bisglycinate
Why this tier: Comparative advantage over gluconate shown in a rat model (~49% vs ~42% absorption with phytate present), not confirmed in a human trial.
Source: PMID 16684142 (animal study, not human) -- uncertain, needs review