What condition can sildenafil (Viagra) help treat?

Sildenafil, commonly known by its brand name Viagra, is primarily prescribed for the treatment of erectile dysfunction (ED). It works by increasing blood flow to the penis during sexual stimulation, helping to achieve and maintain an erection. This action is due to the inhibition of the phosphodiesterase type 5 (PDE5) enzyme, which leads to increased levels of cyclic guanosine monophosphate (cGMP), promoting vascular relaxation.

While sildenafil has shown some efficacy in treating pulmonary arterial hypertension due to its vasodilatory effects on pulmonary and systemic arterial vascular beds, its primary and FDA-approved use is for erectile dysfunction. Therefore, the statement that sildenafil helps treat erectile dysfunction is accurate.

The other options, such as pulmonary edema caused by altitude sickness, cardiovascular disease, and asthma attacks, do not align with the established uses of sildenafil. The condition most closely associated with sildenafil's therapeutic application remains erectile dysfunction, supported by substantial clinical evidence.