The invention describes novel nitrosated and / or nitrosylated cardiovascular compounds or pharmaceutically acceptable salts thereof, and novel compositions comprising at least one nitrosated and / or nitrosylated cardiovascular compound, and, optionally, at least one nitric oxide donor and / or at least one therapeutic agent. The invention also provides novel compositions and kits comprising at least one cardiovascular compound of the invention, that is optionally nitrosated and / or nitrosylated, and, optionally, at least one nitric oxide donor compound and / or at least one therapeutic agent. The invention also provides methods for (a) treating cardiovascular diseases; (b) treating renovascular diseases; (c) treating diabetes; (d) treating diseases resulting from oxidative stress; (e) treating endothelial dysfunctions; (f) treating diseases caused by endothelial dysfunctions; (g) treating cirrhosis; (h) treating pre-eclampsia; (j) treating osteoporosis; and (k) treating nephropathy. The nitrosated and / or nitrosylated cardiovascular compounds are preferably nitrosated and / or nitrosylated aldosterone antagonists, nitrosated and / or nitrosylated angiotensin II antagonists, nitrosated and / or nitrosylated calcium channel blockers, nitrosated and / or nitrosylated endothelin antagonists, nitrosated and / or nitrosylated hydralazine compounds, nitrosated and / or nitrosylated neutral endopeptidase inhibitors and nitrosated and / or nitrosylated renin inhibitors.