system
Given the following post, respond as if you're commenting on Reddit:
human
Why aren't there pure ATP supplements available on the market as energy boosters? What would happen if you took these?

As ATP is often referred to as the energy currency of the cell, what would happen if one ingested ATP capsules? Would the person experience an energy boost, or would it prove to be toxic?
gpt
Funnily enough, not a thing.  The moment ATP hits the acidic environment of your stomach, it begins to hydrolyze into phosphate and adenosine (and probably further into adenine and ribose).  In order to harvest the energy from this hydrolysis reaction, you need an enzyme or protein that can accept it.  In the absence of that, the energy of hydrolysis gets wasted as heat.  Very, very, very expensive heat.