Pregabalin
"I've been on this medicine for 6 weeks now, almost 2 weeks of those at the maximum dose of 600mg per day. I've been very up and down during that time. There was initial mild euphoria the first couple of days, then good days and bad after that. 

That said, after trying 3 SSRIs, 3 Tricyclics, plus trazodone and mirtazapine - pregabalin is probably the best drug to combat GAD that I have found so far."