A randomized study of 216 patients at 26 sites in North America showed that the drug, known as sildenafil, was no better than a placebo at improving exercise capability or clinical symptoms of heart disease.

 
Viagra is no help against heart failure: study (via AFP)

The erectile dysfunction drug commonly known as Viagra is no help against heart failure and should not be taken for it, according to research out Monday that contradicts previous, smaller studies. Some early research had suggested the drug, which can increase blood flow to other parts of the body,…