I've heard that TAAR hypothesis, but it's definitely not a confirmed accepted mechanism.
It actually is a confirmed mechanism. Many studies on the subject are currently cited on the Wikipedia "Amphetamine" article. I'd pull some for you, but my computer died on me today, and I'm still trying to find my files. Just one of those days I guess...
It's also pretty irresponsible to add anxiolytic drugs to when you're already on an anxiogenic stimulant. I don't know your situation but it's usually better to cut out all anxiogenic influences before you start stacking anxiolytics.
I disagree entirely.
I have ADHD and I have anxiety issues. How else do I treat that!? I've tried ALL other alternatives! Name any drug that's used as an anxiolytic, and I've been on it. Seriously! Doxepin, Mirtazepine, Hydroxazine, Seroquel, Risperdal, Abilify, Buspar!!! Holy fuck!! Even I can't believe it!!! NONE OF THEM HELPED! NONE! ZERO! NILL! I tried EVERY FUCKING ALTERNATIVE! Nothing fucking worked!!!
Also, I wasn't even on Adderall or any stimulant when I was trying all of these!!! All of them made my anxiety 10 times worse. They all had paradoxical effects on me. I would get extremely paranoid and very agitated. Do you have ANY idea what it's like to be SO tied that you can barely stay awake, but be so scared for your life that you have to FORCE yourself to stay awake?! Do you?! DO YOU HAVE ANY IDEA WHAT IT WAS LIKE TRYING TO STAY AWAKE ON 200 FUCKING MILLIGRAMS OF SEROQUEL!?!?!? There is no worse hell.
I DESERVE to be on benzo's. I DESERVE to be on Adderall! Interestingly enough, Adderall has paradoxical effects on me too!! It actuay ELIMINATES a TON of my anxiety, makes me the opposite of agitated and makes it so I can actually function like a human being!! But it doesn't help for sleep. That's why benzo's are TOTALLY APPROPRIATE for this situation.
Please do not make broad statements like that. You don't know everyone's situation and statements like that is what has caused my personal hell for the past 4 years.