Table 1.

Investigational products

Pastille (medical device)	ipalat Hydro Med
Ingredients	Active ingredients: gum arabic, natrosol, sodium hyaluronate, and carrageenan
	Further ingredients: maltitol syrup, honey flavor, primulae extract, bitter fennel oil, star anis oil, and sucralose
Administration	1 pastille per subject, sucking and chewing
Manufacturer	Dr. Pfleger Arzneimittel GmbH D-96045 Bamberg, Germany

Control	Parafilm "M"
Ingredients	Paraffin wax and polyolefins
Administration	5 × 5 cm piece per subject, sucking and chewing
Manufacturer	Bemis Corporate, 2301 Industrial Drive, Neenah, WI 54956, USA