The Sympathomimetic Actions of l-Ephedrine and d-Pseudoephedrine: Direct Receptor Activation or Norepinephrine Release?

Abstract

The indirectly sympathomimetic property of l-ephedrine may be one of the mechanisms to explain why ephedrine is preferred over alpha-adrenergic agonists as a vasopressor for treatment of intraspinal anesthesia-induced hypotension in obstetrics.