Methods of treatment include administering effective amounts of a nitrogen oxide (NO) donor (such as nicorandil) and a hydrogen sulfide (H
2
S) releasing agent (such as zofenopril) to a subject in need thereof. In various embodiments, the H
2
S releasing agent is administered in an amount that is effective to enhance the therapeutic efficacy of the NO donor. Coformulations of the H
2
S releasing agent and the NO donor are provided that are suitable for treating a number of conditions. In various embodiments, treatments for conditions such as chronic kidney disease, Duchenne Muscular Dystrophy, Becker Muscular Dystrophy, familial dilated cardiomyopathy and/or idiopathic dilated cardiomyopathy are provided.