When working with sildenafil citrate, the active compound prescribed for erectile dysfunction and pulmonary arterial hypertension. Also known as Viagra, it helps relax smooth muscle and increase blood flow. It belongs to the broader family of PDE5 inhibitors, drugs that block the enzyme phosphodiesterase type 5 to boost nitric oxide signaling. Because it widens blood vessels, any medication that also dilates vessels—most notably nitrates, drugs such as nitroglycerin used for chest pain—can cause a dangerous drop in blood pressure when taken together. Understanding these relationships lets you use the drug safely and get the best results. If you’re looking for reliable information on sildenafil citrate, you’ve come to the right place.
