Your condition is called "hypochondria". Just kidding =)
I'm looking into this product and noticed the mouthwash version contains Zinc Gluconate and Peppermint Oil. The Zinc freshens taste and the Peppermint Oil is a powerful oil that numbs the mouth and makes it feel tingly/mediciny.
Has anyone tried pure Grapefruit-Seed-Extract with no added ingredients and noticed the same results (taste/numbness)?