Picking a nit, but SSRIs don't actually act on serotonin receptors. Although the action of SSRIs isn't completely understood, they generally work by increasing the level of serotonin in the brain by reducing reuptake.

So does the medical establishment at large - it's well acceptd that while SSRI's seem to work, there is no way, other than trying them out, to know which one will work for person X.

That said - given the possibility of serotonin syndrom and the mad bender this guy was allegedely on, it's a wonder he's alive.

as do I, SSRIs are terrifying, addictive and something I've avoided completely.