Phosphatidylserine (PS) vs Urolithin A

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

Phosphatidylserine (PS)Urolithin A
CategorySupplementsSupplements
Standard Dose
Timing
Cycle Duration
Evidence LevelModerate-StrongModerate-Strong

Mechanism

Phospholipid concentrated in brain cell membranes. Supports neurotransmitter production (acetylcholine, dopamine), cortisol regulation, and membrane fluidity. Improves cognitive function, reduces exercise-induced cortisol, and supports HPA axis recovery.

Contraindications

  • Soy allergy (if soy-derived — use sunflower-derived instead)
B

Urolithin A

Supplements

Mechanism

Gut metabolite of ellagitannins that activates mitophagy — selective clearance of damaged mitochondria. Improves mitochondrial function, muscle endurance, and cellular energy production. Only ~40% of population can produce it endogenously.

Contraindications

  • Limited long-term safety data beyond 4 months

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