The maker, not the regulator, vouches for what is in the bottle
Lion's mane is among the 18 most common ingredients in 103 US memory supplements. Under US law the maker answers for safety and for the truth of the claims.
What the study found
Nobody checks a memory supplement before it reaches the shelf
A survey of 103 memory supplements sold in US pharmacies and groceries put lion's mane among the eighteen most common ingredients. Under US law the maker, not the regulator, answers for a supplement's safety and for the truth of its claims, and products often reach shelves unreviewed.
The caveat · One team's ranking, no stated rules
The same review sorts those eighteen ingredients by evidence and puts lion's mane in its best-supported group, but that sorting is one team's judgement with no stated inclusion rules and no bias assessment. Its own closing paragraph says the category lacks a solid scientific foundation.