Spastic bowel is the 'old' term for what we now call IBS. So it's really one in the same.

There are many different things you can try to manage/control IBS symptoms. It depends a lot on what your main complaints are. And what works for some people, may not for others. There is a lot of trial and error in finding what works best for you..and/or what combination of things will bring relief.

If you list your main symptoms, you'd perhaps get some more defined replies to your question. There's plenty of experience on this board.