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Spermidine Dosage Guide

Evidence:Emerging
·

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

General Dosage

1-6mg daily from standardized wheat germ extract

Maximum dose: 6mg/day (doses above this have limited safety data)

Dosage Recommendations

General recommendation: 1-6mg daily from standardized wheat germ extract

Timing: Morning with breakfast; consistent daily use is recommended for autophagy benefits • Take with food for best absorption.

Dosage by Condition

General longevity / autophagy support
1-3mg dailyEmerging
Cognitive support
1.2mg daily (from wheat germ)Emerging
Cardiovascular health
1-6mg dailyEmerging

Upper limit: 6mg/day (doses above this have limited safety data)

Timing & Absorption

Morning with breakfast; consistent daily use is recommended for autophagy benefits

Best taken with food for optimal absorption.

Full Spermidine Guide

References

  1. RCTWirth M, Benson G, Schwarz C, et al. (2018). The effect of spermidine on memory performance in older adults at risk for dementia: A randomized controlled trial. Cortex. DOI PubMed
  2. Grant AD, Erfe MCB, Kazaryan A, Oliver PL, et al. (2026). A novel fasting mimetic (Mimio) creates fasting-like benefits to hunger control, oxidative stress, and cardiometabolic health in humans.. Scientific reports. DOI PubMed
  3. Bruno G, La Monica M, Ziegenfuss TN (2025). Effects of Spermidine-Rich Rice Germ Extract Supplement on Biomarkers of Healthy Aging and Autophagy-Proof-of-Concept Pilot Study.. Alternative therapies in health and medicine. PubMed
  4. Rhodes CH, Hong BV, Tang X, Weng CY, et al. (2024). Absorption, anti-inflammatory, antioxidant, and cardioprotective impacts of a novel fasting mimetic containing spermidine, nicotinamide, palmitoylethanolamide, and oleoylethanolamide: A pilot dose-escalation study in healthy young adult men.. Nutrition research (New York, N.Y.). DOI PubMed
  5. RCTKeohane P, Everett JR, Pereira R, Cook CM, et al. (2024). Supplementation of spermidine at 40 mg/day has minimal effects on circulating polyamines: An exploratory double-blind randomized controlled trial in older men.. Nutrition research (New York, N.Y.). DOI PubMed
  6. RCTFélix J, Díaz-Del Cerro E, Baca A, López-Ballesteros A, et al. (2024). Human Supplementation with AM3, Spermidine, and Hesperidin Enhances Immune Function, Decreases Biological Age, and Improves Oxidative-Inflammatory State: A Randomized Controlled Trial.. Antioxidants (Basel, Switzerland). DOI PubMed
  7. Senekowitsch S, Wietkamp E, Grimm M, Schmelter F, et al. (2023). High-Dose Spermidine Supplementation Does Not Increase Spermidine Levels in Blood Plasma and Saliva of Healthy Adults: A Randomized Placebo-Controlled Pharmacokinetic and Metabolomic Study.. Nutrients. DOI PubMed
Show 3 more references
  1. Lee J, Htoo JK, Kluenemann M, González-Vega JC, et al. (2023). Effects of dietary protein content and crystalline amino acid supplementation patterns in low protein diets on intestinal bacteria and their metabolites in weaned pigs raised under Different sanitary conditions.. Journal of animal science. DOI PubMed
  2. ObservationalEisenberg T, Abdellatif M, Schroeder S, et al. (2016). Cardioprotection and lifespan extension by the natural polyamine spermidine. Nature Medicine. DOI PubMed
  3. ReviewMadeo F, Eisenberg T, Pietrocola F, Kroemer G (2018). Spermidine in health and disease. Science. DOI PubMed