Alpha blockers are substances that antagonize alpha receptors which are located primarily in smooth muscle. This acts to vasodilate in the arterial system and, thus, these agents are used to treat ...

Discover how common heart medications combat oxidative stress and inflammation from aircraft noise pollution. Image Credit: Steve Mann / Shutterstock In a recent article in the journal ...

Epinephrine acts on both alpha- and beta-adrenergic receptors ... May be antagonized by β-blockers (eg, propranolol), α-blockers (eg, phentolamine), ergot alkaloids. Arrhythmias possible ...