I recommend TheraBreath mouthwash.

This is the TheraBreath Mild Mint Mouthwash that I bought after trying it at a friend's house and liking it. I heard that it is better to buy it through international shipping, so I ordered a large size from iHerb. It doesn't leave my mouth feeling spicy, so it's totally my style, and I'm using it really well. The bottle is so big that it never seems to run out, no matter how much I use it. I also bought a small size along with this one, and I find it convenient to carry around when traveling.