Unlocking the Brain's Chemical Keys

Your body is just a bunch of locks, and drugs are the keys. Powerful painkillers

like Morphine and Fentanyl pick the same lock—the mu-opioid receptor—to shut down pain.

But then there's Naloxone, the master key that kicks them out and reverses an overdose.

Meanwhile, anxiety meds like Alprazolam and even sleep aids like Zopiclone target

a different lock called GABA to chill your brain out. From pain to panic, it's all about which

key fits which lock in your nervous system. It's a wild chemical game happening inside

you every time you take a pill.