(A) Sildenafil prodrug
No PK Parameter Point Estimate
(Ratio of geometric mean %)
Lower Limit Upper Limit CV (%) Power Result
1 AUC0-last
(ng.hr/ml)
113.622 107.352 120.258 13.412 87.468 BE
2 AUC0-inf
(ng.hr/ml)
112.991 106.986 119.333 12.898 92.340 BE
3 Cmax
(ng/ml)
108.003 95.732 121.848 28.950 63.755 BE
(B) N-desmethyl Sildenafil (active metabolite)
No PK Parameter Point Estimate
(Ratio of geometric mean %)
Lower Limit Upper Limit CV (%) Power Result
1 AUC0-last
(ng.hr/ml)
117.634 112.585 122.910 10.3446 74.403 BE
2 AUC0-inf
(ng.hr/ml)
115.031 110.093 120.191 10.348 93.351 BE
3 Cmax
(ng/ml)
108.578 98.403 119.805 23.458 76.826 BE
(C) Combination (sum of the parent drug and its active metabolite)
No PK Parameter Point Estimate
(Ratio of geometric mean %)
Lower Limit Upper Limit CV (%) Power Result
1 AUC0-last
(nM.hr)
117.775 112.786 122.985 10.208 73.920 BE
2 AUC0-inf
(nM.hr)
115.116 110.251 120.197 10.184 93.627 BE
3 Cmax
(nM)
108.573 98.400 119.798 23.454 76.860 BE
BE = Bioequivalent
Table 6: Statistical Result of sildenafil, its active metabolite n-desmethylsildenafil,and their combination under fed conditions (n = 32).