I've been taking this med for years. I have a 0.5 mg dose, and more than once I've take 2 mg or 3 mg, and then had a hell of a night. Was no where near "ragdoll", but feeling very good.
What's really weird for me, is that if I take 10mg, I'll be swallowing 20 pills. Granted they are quite small, but still... 20!!