Overview
Polyamine inducing autophagy; epidemiologic association with longevity.
- Wheat germ
- Aged cheese
- Soybeans
- Mushrooms
- Wheat germ extract
Forms & variants of Spermidine
Different chemical forms of Spermidine behave differently. Browse each form's mechanism, bioavailability, and best-use context.
Mechanism of action
Induces autophagy via inhibition of EP300 acetyltransferase.
- · Autophagy induction
Effects on the body
Organ system effects
Linked to lower dementia risk in cohort studies.
Evidence-based benefits
Cohort data suggest reduced mortality and dementia risk
Limited evidencePotential 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
- · Allergic or hypersensitivity reaction (rash, itching, swelling)
- · Sleep disturbance if taken late in the day
- · Discontinue and seek medical advice if symptoms are severe, persistent, or include difficulty breathing
Drug interactions
Supplement interactions
- NAD+ precursor (NMN or NR)Complementary mitochondrial and sirtuin support.
- Omega-3Lowers inflammation and supports membrane integrity.
No specific avoidances listed.
Dosing & bioavailability
Where to buy
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Third-party testedIndependently verified Spermidine — look for USP, NSF, or Informed Sport seals on the label for purity and dose accuracy.Spermidine third party tested NSF
CapsulesPre-measured Spermidine capsules — easiest for travel and consistent daily dosing without scoops or scales.Spermidine capsules
PowderBulk unflavored Spermidine powder — best cost-per-gram and flexible dosing for stacking or mixing into drinks.Spermidine powder unflavored
Best sellersMost-purchased Spermidine products on Amazon — a quick way to see what's reviewed widely before you commit.Spermidine best sellerScientific evidence8Show studiesHide studies
Spermidine and cognitive function in older adults
Schwarz C, et al.
3-month RCT of spermidine-rich wheat germ.
Improved memory performance in subjective cognitive decline.
PubMed: Spermidine — Cohort data suggest reduced mortality and dementia risk
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PubMed: Spermidine — randomized controlled trial
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PubMed: Spermidine — meta-analysis
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PubMed: Spermidine — pharmacokinetics
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PubMed: Spermidine — safety adverse events
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PubMed: Spermidine — dose response
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Google Scholar: Spermidine — clinical evidence
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Cross-database citation index for Spermidine as it relates to "clinical evidence".
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