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3Medicinal

Phosphatidylserine

Also sold as PS

Age-related memory support with modest evidence.

TrustedSupp Tier System™ · Tier 3Take as a defined course
Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.

Evidence strength

45/100Limited
WEAKLIMITEDMODERATESTRONGVERY STRONG

What the evidence supports: age-related memory decline in older, mostly bovine-source trials.

This scores how well-supported the claim above is — not how much benefit you personally would get. A high score on a narrow claim does not extend to everything the product is marketed for.

How long to take it

Twelve weeks to judge effect.

Who it's actually for

Older adults with age-related memory concerns.

Safe upper limit

Unverified
No formal limit; 100–300 mg daily in trials
Well tolerated. Mild blood-thinning effect.
No source or citation attached yet.

Interactions to know about

Other supplements:

Run your full list through the interaction check.

Practical notes

  • Older trials used bovine-derived PS; modern products are soy or sunflower and less well studied.
  • Stop before surgery.