Research
Micronutrients & recovery
High concentrations of specific free amino acids (glutamine, tryptophan) are consistently present in both whey and plant-based protein powders.
You can expect both whey and plant protein powders to be rich sources of glutamine and tryptophan.
ModerateSupportsMEDIUM confidence
The amino acids like glutamine and L-tryptophan were consistently high-ranking in most species of whey and plant-based proteins investigated.
Why this rating
Based on chemical analysis of products, not clinical trials.
Source
Quantitative LC-MS/MS Determination of Source-Specific Variations of Underivatized Free Amino Acids in Protein Powders
C. Ranjani et al. · Asian Journal of Chemistry · 2025
mechanism_only · n=18
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