[marmaduke]

This article mentions that previous studies found L-Theanine has stronger effect on anxious subjects. Perhaps caffeine provides that.

[finaliteration]

Caffeine also “treats” things like ADHD, sometimes without someone realizing it. I was told I likely had ADHD as a child that wasn’t ever treated/evaluated (because hippie parents) that carried into adulthood and I have basically been self-medicating with caffeine for the last 10+ years.

[greenshackle2]

Nicotine also had positive results in some trials with ADHD. I self-medicate with nicotine gum though I've never smoked.