How to Read a Protein Powder Label: Without Getting Tricked

Ignore everything on the front: '100% pure whey', 'premium', 'gold standard', '30 g protein per serve'. None of these claims are regulated in a way that helps shoppers.

Flip the tub. Look only at the nutrition information panel and the ingredients list. Everything that matters lives there.

Australian labels show 'per serve' and 'per 100 g'. Per-serve numbers are misleading because brands can choose the serve size. 30 g, 35 g, 40 g, even 45 g, to make the protein number look bigger.

Per-100 g of powder is the constant. Use it to compare any two products. A WPI at 88 g protein per 100 g is genuinely better quality than a WPC at 72 g per 100 g. A blend at 78 g per 100 g is somewhere in between.

Australian food labels list ingredients in descending order by weight. The first ingredient should be a whey or plant protein source (WPC, WPI, pea, rice). If it's something else, maltodextrin, cocoa, creamer, the protein content is being padded.

Look for amino acid spiking. Free-form glycine, taurine, and creatine count as protein on a Kjeldahl nitrogen test but don't contribute the essential aminos you need for muscle. If you see these high in the ingredients list, the headline protein number is partly fake.

Honest brands publish a full amino acid breakdown. Look for ≥2.5 g of leucine per 30 g serve, leucine is the muscle-protein-synthesis trigger and a reliable proxy for genuine whey content.

If the brand doesn't publish amino acids at all, that's a flag. Not an automatic 'avoid', but treat the protein number with skepticism.

'Grass-fed', unverified in Australia for most brands. There's no certifying body whose stamp matters.

'Cold-processed', almost all WPC and WPI is. It's a baseline, not a feature.

'No artificial flavours', usually true, but stevia and natural identical flavours can still taste artificial.

'Gluten-free', almost all whey protein is naturally gluten-free. Pointless badge.