Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Glycine + NAC (GlyNAC) | HMB | |
|---|---|---|
| Category | Supplements | Supplements |
| Standard Dose | — | — |
| Timing | — | — |
| Cycle Duration | — | — |
| Evidence Level | Strong | Moderate |
Combination that restores glutathione synthesis. Age-related glutathione deficiency is driven by glycine and cysteine precursor depletion, not enzyme dysfunction. GlyNAC corrects oxidative stress, mitochondrial dysfunction, inflammation, and insulin resistance in older adults.
Leucine metabolite that reduces muscle protein breakdown and may support recovery under high training or caloric deficit conditions.
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