I drink a few cups of espresso per day and it gave me an uncomfortable after taste and bad breath. After receiving the treatment for a few days that bad breath was gone. I also could taste food better immediately after treatment.
Achieving fresh breath is a two step process. First one treats and controls bad breath, then one attempts to get fresh breath. One cannot get fresh breath without treating the underlying bad breath. To achieve effective, strong and long lasting fresh breath, one needs to first treat bad breath.