Soy Protein Isolate
What this means
Elite efficiency — 40%+ of calories from protein. Lean meat, whey isolate, low-fat dairy. 88.9% density puts this in the Platinum tier.
Soy isolate is a complete plant protein (moderate DIAAS) — counts toward the target.
Note: At 1.6g leucine per single scoop, this product sits below the 2.5g threshold needed to maximally trigger muscle protein synthesis in one serving. Common workarounds: use 1.5 scoops, or combine with another protein source in the same meal (e.g., Greek yogurt, eggs). More on the leucine threshold.
vs Optimum Nutrition Gold Standard (whey reference)
| Metric | Soy Protein Isolate | Gold Standard (reference) | Δ |
|---|---|---|---|
| Protein / serving | 20g | 24g | -4g |
| Leucine | 1.6g | 2.5g | -0.9g |
| Density | 88.9% | 80.0% | +8.9% |
| MPS trigger at 1 scoop? | No | Yes |
Notes
Non-GMO unflavored soy protein isolate, free of acesulfame-K / sucralose / aspartame. The DB's only single-source soy isolate. Leucine estimated from the soy factor (~8.0%).
Where to buy
Manufacturer page →Run protein-per-dollar with your actual price to see cost-efficiency.