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4Optional

Spermidine

Also sold as Wheat germ extract

Autophagy interest, minimal human evidence so far.

4TrustedSupp Tier System™ · Tier 4Take by choice, or not at all

How long to take it

Not established.

Who it's actually for

People comfortable funding an experiment on themselves.

Safe upper limit

Unverified
No formal limit; 1–6 mg daily in trials
Short-term safety looks acceptable. No long-term human data exists.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.

Interactions to know about

No commonly documented medication clashes in our data. That is not the same as none existing.

Other supplements:

Run your full list through the interaction check.

Practical notes

  • Wheat germ, aged cheese and natto are dietary sources.
  • Autophagy markers are not health outcomes.