Longevity
Spermidine
Also known as: Spermidine polyamine
Polyamine that induces autophagy, the cellular recycling process. Found in wheat germ and aged cheese, associated with longevity in population studies.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Common questions
How much Spermidine should I take?
The typical range is 1-6mg daily. Safe long-term
When should I take Spermidine?
Any time. Optional.
Which form of Spermidine is best?
Capsule — Wheat germ extract common. Other forms in the catalog: Wheat germ powder.
Is Spermidine safe?
Commonly reported: Well tolerated. Serious warnings: None significant. Safe
Which Spermidine supplement scores highest?
Double Wood Spermidine Supplement, at 88/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Autophagy
- Longevity
- Cellular renewal
- Cardiovascular health
What systematic reviews concluded
Outcomes that systematic reviews of Spermidine reached a verdict on: 1 with a benefit. Each is quoted from a review and linked to it on PubMed. How these were read.
Reviews found a benefit (1)
“The results imply a positive outlook for the reviewed substances to qualify as a novel treatment option for AD.” PMID 33353228
How it works
- Induces autophagy
- Supports cellular renewal
- Cardioprotective in studies
- Neuroprotective potential
Dosage
- Typical range
- 1-6mg daily
- Timing
- Any time
- With food
- Optional
- Duration
- Safe long-term
- Special populations
- Longevity-focused, autophagy support
Forms
- Capsule
- Wheat germ powder
Safety
Common side effects
- Well tolerated
Contraindications
- None established
Products containing Spermidine
Top-scoring supplements in our catalog that list Spermidine on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Population studies link to longevity, autophagy induction confirmed
Grade B: Some human trials support key claims; further confirmation needed.
Related in Longevity
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.