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Compound

Spermidine

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Spermidine. Polyamine inducing autophagy; epidemiologic association with longevity.

How it works. Induces autophagy via inhibition of EP300 acetyltransferase.

What the research supports. 1 graded claims. Strongest: Cohort data suggest reduced mortality and dementia risk (limited).

How much to take. Typical dose: 1–6 mg/d (wheat germ extract).

Side effects and interactions. 1 medication interaction listed. Serious: Discontinue and seek medical advice if symptoms are severe, persistent, or include difficulty breathing.

Stacking. Pairs well with NAD+ precursor (NMN or NR), Omega-3.

Forms. 1 forms. Pick one to open its profile.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Spermidine. Anecdotes are not medical advice.

Spermidine. Polyamine inducing autophagy; epidemiologic association with longevity.

Molecular structureC7H19N3 · 145.25 g/mol

What it is

Polyamine inducing autophagy; epidemiologic association with longevity.

Food sources

Wheat germAged cheeseSoybeansMushrooms

Goals

Healthy Aging

How it works

Induces autophagy via inhibition of EP300 acetyltransferase.

Pathways

  • Autophagy induction

Effects

  • +Autophagy supports

What the research supports

Cohort data suggest reduced mortality and dementia risklimited

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
1–6 mg/d (wheat germ extract)
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith a meal containing fat for fat-soluble compounds; otherwise either.
Best formMost evidence is based on the wheat germ extract form.
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Side effects & interactions

Common side effects

  • Spermidine is generally well-tolerated at evidence-based doses
  • Mild GI discomfort (nausea, loose stools, or bloating) possible at higher intakes
  • Headache or transient fatigue reported by a small fraction of users

Serious

  • Discontinue and seek medical advice if symptoms are severe, persistent, or include difficulty breathing

Medication interactions

Prescription medications (general)minor

Always disclose Spermidine use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • NAD+ precursor (NMN or NR)Complementary mitochondrial and sirtuin support.
  • Omega-3Lowers inflammation and supports membrane integrity.

Key studies

8 studies cited in total.

PubMed: Spermidine — Cohort data suggest reduced mortality and dementia risk ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Spermidine and "Cohort data suggest reduced mortality and dementia risk". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Spermidine — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Spermidine and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Spermidine — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Spermidine and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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