| 1 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D00302 
                
                    D00302
                
             | 
                
                    Dipyridamole
                
             | 6件:  46 46, 49, 51, 66, 96, 224 | 
| 2 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D00528 
                
                    D00528
                
             | 
                
                    Caffeine
                
             | 9件:  2 2, 6, 13, 21, 46, 78, 96, 97, 265 | 
| 3 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D01453 
                
                    D01453
                
             | 
                
                    Caffeine
                
             | 9件:  2 2, 6, 13, 21, 46, 78, 96, 97, 265 | 
| 4 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D02008 
                
                    D02008
                
             | 
                
                    Tadalafil
                
             | 7件:  6 6, 51, 75, 84, 86, 113, 210 | 
| 5 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D02229 
                
                    D02229
                
             | 
                
                    Sildenafil
                
             | 17件:  6 6, 46, 50, 51, 85, 86, 90, 113, 210, 211, 212, 225, 226, 278, 294, 299, 301 | 
| 6 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D02731 
                
                    D02731
                
             | 
                
                    Vardenafil
                
             | 3件:  13 13, 86, 299 | 
| 7 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D03260 
                
                    D03260
                
             | 
                
                    Vardenafil
                
             | 3件:  13 13, 86, 299 | 
| 8 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D08514 
                
                    D08514
                
             | 
                
                    Sildenafil
                
             | 17件:  6 6, 46, 50, 51, 85, 86, 90, 113, 210, 211, 212, 225, 226, 278, 294, 299, 301 | 
| 9 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D08668 
                
                    D08668
                
             | 
                
                    Vardenafil
                
             | 3件:  13 13, 86, 299 | 
| 10 | 
                
                    PDE5A
                
             | 3件:  Purine metabolism Purine metabolism, Metabolic pathways, cGMP-PKG signaling pathway | D10027 
                
                    D10027
                
             | 
                
                    Udenafil
                
             | 2件:  86 86, 210 |