Several observations from preclinical and short-term clinical studies support a role for sildenafil in the treatment of heart failure patients. The following discussion briefly considers each of ...

Sildenafil helps the muscles in blood vessel walls relax, increasing blood flow to your penis. This makes it easier to get and keep an erection. The drug won’t cause an erection on its own.

If you’re interested in men’s health services but don’t want to make a trip to the doctor in person, you may have come across the brand Roman. In this article, we’re taking a close look at ...

Enzymatic desaturation and reduction processes enable the synthesis of either enantiomer of the enone products from cyclohexanone or cyclohexadienone substrates. See Zeng et al. A flux-regulated ...

Catalyst synthesis is the process of fabricating catalytic materials. It aims to optimize factors such as the catalyst activity, selectivity, stability and cost. A new aluminosilicate zeolite ...

It has been tempting to view the C.I.A. as omniscient. Yet Coll’s chastening new book about the events leading up to the Iraq War, in 2003, shows just how often the agency was flying blind.

Tramadol vs. Sildenafil (PDE5 Inhibitor). The between-group difference in end of study mean IELT (minutes) at four weeks based on one RCT (n = 59) was 2.01 (95% CI 1.21 to 2.87); p < 0. ...

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