Ingredients / Focus & brain

Huperzine A

Also listed as: Huperzia serrata extract

What it is

A compound extracted from a type of club moss. It slows the breakdown of acetylcholine, a brain chemical involved in memory.

Why it is in energy drinks

Marketed for memory and focus.

Worth knowing

It acts like a drug on the nervous system and is not well studied in healthy people. It can interact with some medications, so ask a doctor first if you take any.

General information, not medical advice. We read what the label lists and don't test what an ingredient does.