I recommend Listerine.

This is Listerine that I often use when I'm too lazy to brush my teeth after a snack.

It contains more than double the amount of fluoride and has a mild green tea flavor, so the characteristic tingling sensation of Listerine is less noticeable.

Since it even prevents cavities, my elementary school child uses it too.

It has a mild flavor, so it wasn't overwhelming.

I recommend it.