HMB vs Pentadecanoic Acid (C15:0 / Fatty15)

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

HMBPentadecanoic Acid (C15:0 / Fatty15)
CategorySupplementsSupplements
Standard Dose
Timing
Cycle Duration
Evidence LevelModerateEmerging
A

HMB

Supplements

Mechanism

Leucine metabolite that reduces muscle protein breakdown and may support recovery under high training or caloric deficit conditions.

Contraindications

  • None established at standard doses

Mechanism

Odd-chain saturated fatty acid identified as essential. Strengthens cell membranes by integrating into phospholipid bilayer, activates AMPK and PPAR-alpha/delta, and inhibits mTOR. Repairs mitochondrial function. Epidemiologically associated with reduced cardiometabolic disease.

Contraindications

  • None established

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