>>12319299He can use drugs without risk.
His serotonin reuptake will recover.
Reuptake inhibitors as anti depressants causes serotonin that's not reuptaken to be only feed forward and not reuptaken, reuptake happens as important thing in brain.
You'll feel emotions again, you probably will be little sad first, but consider taking 5HTP and SAMe, when you quit, to get back on earthly levels of pleasure and fast concept switching.
Your memory will became more like water then, and it will fill the shape of what you have to remember in a smart way.
In a months, like 3 months, you can think back normally, with emotional saturation.
Learn to handle your emotions on the way...