Thank you for bringing this up. I don't advise you to increase dosage. Just like any other products, when used abusively it can cause undesired effects such as inflammation of the oral tissue.
The two active ingredients in the treatments are potent and powerful anti-bacterial agents. Instead of increasing dosage, try to brush and mouthwash for longer periods of time.
By proceeding this way, you'll give the active ingredients more time to act and will have much better results. For the more stubborn cases of halitosis, you can brush or mouthwash for up to 4-5 minutes.
