A: Hi Susan! Not exactly. All of our TheraBreath Dry Mouth Solutions are designed to just that -- help relieve the symptoms of a dry mouth. If you want a solution that is designed to fight cavities, you should try our TheraBreath Healthy Smile Oral Rinse. That being said, our TheraBreath Dry Mouth Solutions can help prevent cavities -- sort of. See, a dry mouth can actually make cavities more likely. Saliva helps wash away any tiny food particles that harmful bacteria like to feast upon. Hope this helps answer your question!