In case someone wanted to know. After taking seroxat I developed serious extrapyramidal symptons, like muscle aches, tremors and such. I were worsening the effects by drinking alcohol to actually get some rest for a couple hours. I then switched to tetrazepam which, for a benzodiazepine, has no mind numbing effects.
Then I switched to very high doses of baclofen, which, for the first days, worked wonders. I was sublty taken to the pleasant GHB-like feeling high, with all the sexuality, disinhibition, euphoria and the like. After a couple days the effects are still there, with increased sexuality, much less tension, definitely socialising properties. The only downside is a possibility, higher than with GHB, to fall into asleep in a very narcoleptic pattern.
It is also worth noting that baclofen is a chloroderivative of phenibut, which is said to be a fine GHB replacement. I, however, find baclofen way cleaner and less toxic than phenibut, as phenibut is active in the 2-3g range whereas 150mg baclofen is already lots of fun.