NMN (Nicotinamide Mononucleotide) vs Serrapeptase

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

NMN (Nicotinamide Mononucleotide)Serrapeptase
CategorySupplementsSupplements
Standard Dose500-1000mg daily120,000-240,000 SPU (serratiopeptidase units) daily
TimingMorning on empty stomach. Sublingual absorption bypasses first-pass metabolism.On empty stomach (critical — food proteins will be digested instead of systemic absorption). 30+ minutes before meals or 2 hours after.
Cycle DurationongoingCycle 4-8 weeks on, 2-4 weeks off
Evidence Levelmoderate_humanmoderate_human

Mechanism

NMN is a direct biosynthetic precursor to NAD+ via the salvage pathway enzyme nicotinamide phosphoribosyltransferase (NAMPT). Elevated NAD+ activates sirtuins (SIRT1-7), PARP DNA repair enzymes, and CD38/CD157 signaling. SIRT1 activation deacetylates PGC-1alpha (mitochondrial biogenesis), FOXO transcription factors (stress resistance), and NF-kB (anti-inflammatory). NMN also enters cells via the Slc12a8 transporter, recently identified in the gut.

Standard Dosing

500-1000mg daily

Timing

Morning on empty stomach. Sublingual absorption bypasses first-pass metabolism.

Cycle Duration

ongoing

Side Effects

  • Mild GI discomfort
  • Flushing (rare, unlike niacin)
  • Mild headache during initial use

Contraindications

  • Active cancer (theoretical concern: NAD+ may fuel rapidly dividing cells)
  • Pregnancy/lactation (insufficient data)
  • Theoretical concern in active cancer (NAD+ fuels all rapidly dividing cells)

Best Stacking Partners

ResveratrolTMG (Betaine)Vitamin D3Quercetin
B

Serrapeptase

Supplements

Mechanism

Serrapeptase (serratiopeptidase) is a proteolytic enzyme originally isolated from the gut of the silkworm (Serratia marcescens). It hydrolyzes non-living tissue including fibrin, blood clots, cysts, and arterial plaque while sparing living tissue. It reduces bradykinin and other pain-mediating amines, provides anti-inflammatory effects by reducing neutrophil infiltration, and thins mucus by cleaving glycoprotein structures. It may also enhance antibiotic penetration into biofilms.

Standard Dosing

120,000-240,000 SPU (serratiopeptidase units) daily

Timing

On empty stomach (critical — food proteins will be digested instead of systemic absorption). 30+ minutes before meals or 2 hours after.

Cycle Duration

Cycle 4-8 weeks on, 2-4 weeks off

Side Effects

  • GI discomfort
  • Nausea
  • Skin rash (rare)
  • Muscle/joint pain (rare)
  • Pneumonitis (very rare, case reports)

Contraindications

  • Bleeding disorders
  • Scheduled surgery (discontinue 2 weeks prior)
  • Concurrent anticoagulant therapy
  • Active peptic ulcers
  • Active bleeding
  • Pre-surgery
  • Blood clotting disorders

Best Stacking Partners

NattokinaseNACBromelainCurcumin

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