I've had four or five transfers now (goodness its hard to count back all those years!) and it was never offered, plus the test run transfers for a couple of times. If you are afraid of the transfer, then I say go for it, because there is no point in putting yourself through that.
However, if you have never taken any of this medicine and you are just a little nervous, I say don't bother. It's perfectly normal to be nervous and it won't affect the transfer negatively. I was nervous for my first, much less so for the others because I knew what to expect. Since I have never taken a relaxant for anything, I thought why bother. I might just get to like them and then who knows what circumstances I would find a use for them thereafter, right?