Table 4

 Nasal NO levels (ppb) and nitrite and nitrate in nitrate condensate (µM) before and after nitrate ingestion and 5 minutes after chlorhexidine mouthwash

Time (minutes)Mouthwash
−30060
No significant changes were seen (Friedman).
NO905 (78)952 (78)897 (94)960 (78)
Nitrite1.7 (0.3)1.8 (0.3)2.3 (0.5)3.3 (0.8)
Nitrate21.5 (4.8)29.6 (7.2)23.7 (6.6)18.3 (5.2)