https://astralcodexten.substack.com/p/know-your-gaba-a-receptor-subunits

Many psychiatric drugs and supplements affect GABA, the brain's main inhibitory neurotransmitter. But some have different effects than others. Why? This is rarely a productive question to ask in psychiatry, and this situation is no exception. But if you persist long enough, someone will eventually tell you to study GABA receptor subunits, which I am finally getting around to doing.

GABA-A is the most common type of GABA receptor. Seen from the side, it looks like a bell pepper; seen from above, it looks like a tech company logo.