Amphotericin B concentrations in saliva after application of 2% amphotericin B in orabase.

2% amphotericin B in orabase was applied to the buccal mucous membranes of healthy volunteers. Amounts of 1 g and 0.5 g were used. The experiments were performed during the day time as well as during the sleeping hours at night. At several intervals after application saliva samples were collected and the amphotericin B concentrations were determined. Application of 1 g of orabase with 2% amphotericin B appears to maintain a sufficiently high concentration for four hours, 0.5 g for three hours. Application of these amounts before going to sleep guarantees a sufficient concentration until awakening the next morning.