Short answer: Cholinesterase inhibitors such as donepezil, or anticholinergic medicines — huperzine A acts on the same system, a direct, mechanism-based caution.
Why donepezil specifically is named as an example
Naming this specific, well-known prescription memory medication directly gives you something concrete to check, rather than a vague "prescription memory drug" category.
Why combining these carries genuine, serious risk
Not appropriate to combine with prescription treatments for memory conditions without medical supervision — a direct, unhedged instruction given the shared mechanism.
⚠️ Worth knowing: huperzine A is one of the ingredients here that most warrants a conversation with a pharmacist, specifically because of this overlap.