I'm currently using Elmex Sensitive Professional. It's apparently using arginine as its active ingredient. Although I don't know which ingredient in here it is that is actually in charge of numbing the pain. I know I've dabble with some other one as well but I have no idea what it had.

I did find Meridol and Sensodyne Rapid Relief toothpastes listed on a national pharmacy's website that apparently contain stannous fluoride, so maybe I'll have to try those out at some point. I don't think I've ever tried either.