| ED | Erectile Dysfunction |
| CVD | CardioVascular Disease |
| NOS | Nitric Oxide Synthase |
| NO | Nitric Oxide |
| Hcys | Homocysteine |
| HHcys | HyperHomocysteinemia |
| MTHFR | 5,10-Methylenetetrahydofolate Reductase |
| FA | Folic Acid |
| ROS | Reactive Oxygen Species |
| cGMP | 3′,5′-cyclic Guanosine MonoPhosphate |
| PKG | Protein Kinase G |
| PDE5 | PhosphoDiEsterase type 5 |
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