SmartMouth Clinical DDS Activated Oral Rinse combines zinc ion technology with maximum anti-plaque and anti-gingivitis benefits to help prevent bleeding gums. This patented solution promotes optimal oral and general health without sacrificing any anti-bad breath technology. SmartMouth Clinical DDS eliminates bad breath instantly, and prevents it from returning for 12 hours per rinse. SmartMouth Clinical DDS is an OTC substitute for prescription chlorhexidine rinse. Unlike prescription chlorhexidine, SmartMouth does not cause tooth staining, has zero alcohol, and is always paraben free.