Premier Protein

Flagged additives

• Sucralose — Sweetener; emerging genotoxicity concern around the impurity/metabolite sucralose-6-acetate.
• Potassium phosphates — Inorganic phosphate additives are highly bioavailable; high additive-phosphate intake is associated with increased cardiovascular and kidney burden, particularly in chronic kidney disease.
• Carrageenan — Degraded carrageenan, and in some animal/in-vitro studies food-grade carrageenan, are linked to intestinal inflammation; human evidence is limited and contested.
• Polyphosphates — Inorganic phosphate additives are highly bioavailable; high additive-phosphate intake is associated with increased cardiovascular and kidney burden, particularly in chronic kidney disease.
• Carboxymethyl cellulose (CMC) — Synthetic emulsifier linked in animal and in-vitro studies to gut-microbiome disruption and intestinal inflammation; human evidence is emerging.
• Acesulfame K — Sweetener; broadly assessed safe but some consumer-avoidance and limited animal-study questions.