Studied for nerve growth factor and cognition; evidence is still early.
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
35/100Limited
WEAKLIMITEDMODERATESTRONGVERY STRONG
What the evidence supports: mild cognitive measures in a small number of short 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 to sixteen weeks in the available trials.
Who it's actually for
People exploring cognitive support, with realistic expectations.
Safe upper limit
Unverified
No formal limit; 500–3,000 mg daily in trials
Generally well tolerated. Allergic reactions reported, including skin and respiratory.