Short answer: Huperzine A is included for its inhibitory action on acetylcholinesterase, the enzyme that breaks down acetylcholine, a neurotransmitter involved in learning and memory formation.
Why this specific enzyme mechanism matters
Inhibiting the enzyme that breaks down acetylcholine is a specific, named biological pathway — distinct from a vague "supports brain function" claim.
Why this same mechanism explains the ingredient's key caution
Because it acts on the same system as some prescription medicines used for memory conditions, this specific mechanism is exactly why medical supervision matters here.
💡 Worth knowing: acetylcholine availability is one of four areas the formula's ingredients are specifically grouped around.