Oyster powder vs oyster extract: what the label actually means
“Oyster extract” and “oyster powder” are not the same ingredient. What each one is, why the protein number gives it away, and five questions to ask a supplier.
How much zinc is in oyster powder, per gram and per capsule
2,641 mg/kg zinc in whole oyster meat powder means 2.6 mg per gram and 3.2 mg per 1.2 g serving, with copper at a natural 13:1 ratio. Compared with raw oysters and zinc picolinate.
Are oyster supplements safe? Arsenic, cadmium and the real limits
Per-serving cadmium, lead, mercury and inorganic arsenic for batch 250910 set against the daily permitted exposure limits used for supplements, and how to run the maths for any product.
Omega-3, taurine and selenium in whole oyster: the nutrients nobody mentions
Beyond zinc, the COA for whole oyster meat powder shows 59% complete protein, omega-3 at 37% of total fat, 17.8 mg taurine per serving, selenium and iron. Honest per-serving amounts.
What a real oyster powder COA looks like, line by line
A Certificate of Analysis for a marine ingredient has eight sections. What each should contain, four things to check before trusting it, and where suppliers go quiet.
Heavy metals and microplastics in oyster powder: what buyers should actually test for
What to test for in oyster powder: inorganic arsenic, cadmium, lead, mercury and microplastics, with real ISO 17025 lab results from batch 250910, Jervis Bay NSW.