Source: ISSN Protein Position Stand (Jäger 2017) — 20–40 g high-quality protein per serving maximizes muscle protein synthesis; 25 g used here.
A fast-digesting complete protein from milk, rich in the amino acids that drive muscle repair.
High leucine content flips on the mTOR pathway that builds muscle; digests quickly for a fast amino-acid spike.
Very safe. Concentrate can bother lactose-sensitive people — isolate has less lactose. Excess protein is not harmful to healthy kidneys.
| Per serving | |
|---|---|
| Typical branded single-ingredient product | $2.00 |
| Bulk powder at the clinical dose (1kg isolate 90%, $74.97) | $1.87 |
Buying bulk powder instead of a branded bottle saves about 6% per serving.
Bulk price: $74.97/1kg →Educational only — not medical advice. Grades and clinical doses are computed from public labels against sourced research (citations on the main site); prices last verified 2026-07-21. Expensive Powder has no sponsors; bulk links may earn an affiliate commission, which never affects a grade. Talk to a clinician before starting any supplement.