Whey Protein Isolate
Ingredient details
- Available
- All flavors
Whey protein isolate is a concentrated milk protein that digests quickly. It contains all nine essential amino acids, including leucine, with small amounts of fat and lactose.
Key benefits
- Supports muscle protein synthesis after exercise
- Provides amino acids soon after eating
Why it matters
Exercise increases the demand for protein as muscles repair and adapt. Leucine helps start the process of making new muscle protein.
Citations
- Tang JE, Moore DR, Kujbida GW, Tarnopolsky MA, Phillips SM (2009) Ingestion of whey hydrolysate, casein, or soy protein isolate: effects on mixed muscle protein synthesis at rest and following resistance exercise in young men. Journal of Applied Physiology. View study: Ingestion of whey hydrolysate, casein, or soy protein isolate: effects on mixed muscle protein synthesis at rest and following resistance exercise in young men
- Multiple (2025) Whey Protein Supplementation Combined with Exercise on Muscle Protein Synthesis and the AKT/mTOR Pathway in Healthy Adults: A Systematic Review and Meta-Analysis. Nutrients 17(16):2579. View study: Whey Protein Supplementation Combined with Exercise on Muscle Protein Synthesis and the AKT/mTOR Pathway in Healthy Adults: A Systematic Review and Meta-Analysis
- Hamarsland H, et al. (2017) Native whey protein with high levels of leucine results in similar post-exercise muscular anabolic responses as regular whey protein: a randomized controlled trial. Journal of the International Society of Sports Nutrition 14:43. View study: Native whey protein with high levels of leucine results in similar post-exercise muscular anabolic responses as regular whey protein: a randomized controlled trial