Find helpful customer reviews and review ratings for Biotene Dry Mouth Mouthwash-8 Oz at Amazon.com. Biotene Dry Mouth Mouthwash is – as the name would suggest – a mouthwash designed at people with dry mouth. The oral powder must be mixed with about 1 ounce of water before using it. Dry mouth is a medical condition where your mouth doesn’t produce enough saliva to keep your mouth moist. Caused by medication, breathing issues and other factors, it can lead to gum inflammation. I am a vocalist. Find helpful customer reviews and review ratings for Biotene Fresh Mint Moisturizing Oral Rinse Mouthwash, Alcohol-Free, for Dry Mouth, 33.8 ounce at Amazon.com. Read honest and unbiased product reviews from our users. Biotene Mouthwash Review Wrap Up A dry mouth is one of the most common and annoying oral health problems. I have Review of Biotene an oral rinse designed for those who suffer with Dry Mouth. Find helpful customer reviews and review ratings for Biotene PBF Oral Rinse 33.8 oz at Amazon.com. Read honest and unbiased product reviews from our users. Read honest and unbiased product reviews from our users. To use the oral rinse or other liquid Biotene Mouthwash, swish a small amount in your mouth for 30 seconds, then spit out. Read Previous Biotene Mouthwash(Oral) About Drugs A-Z Drugs A-Z provides drug information from Everyday Health and our partners, as well as ratings from our members, all in one place. For Mucositis: “I started taking biotene mouthwash and spray on my own for dry mouth after radiation treatments for my prostate . Biotene Mouthwash work inside your mouth and are not meant to be swallowed. It Due to medication I suffer from a dry mouth. However within a week I developed hoarsness and change of voice it continues. As a speciality mouthwash, it does come with a hefty price tag.