Biotene Oralbalance Moisturizing Gel is the most concentrated formula in the Biotene product lineIdeal for overnight use and long lasting Dry Mouth symptom reliefHelps alleviate symptoms for up to 4 hours (as measured in a 28 day clinical study)Offers a specialized alcohol-free, sugar-free and flavor-free formulaNumber 1 Dentist Recommended Dry Mouth brand (Quintiles IMS, data through 4/30/2018)