Glycine + NAC (GlyNAC) vs TUDCA

Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.

Glycine + NAC (GlyNAC)TUDCA
CategorySupplementsSupplements
Standard Dose
Timing
Cycle Duration
Evidence LevelStrongModerate

Mechanism

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.

Contraindications

  • Active stomach ulcer (NAC)
  • Asthma (NAC may cause bronchospasm in rare cases)
B

TUDCA

Supplements

Mechanism

Hydrophilic bile acid that stabilizes hepatocyte membranes, supports bile flow, and reduces endoplasmic reticulum stress. Often used in higher-load liver support and lipid-heavy protocols.

Contraindications

  • Caution with active gallbladder obstruction

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