infacol worked well for us. gripe water wasn't so good, tho I know it works for some people.
If baby is badly affected, I'd try massage too. Your health visitor or midwife shoudl be able to give you info on that. There is a massage you can do that helps colic and it did seem to soothe our little one. Good luck, you have my sympathies, as I know how hard it is when little one is crying and you can't seem to help or comfort them. It WILL pass tho (not much help now, I know).
Hugs xx