lidocaine + ephedrine

Lidocaine + ephedrine is a combination drug consisting of lidocaine, an amide-type local anesthetic, and ephedrine, a sympathomimetic agent. Lidocaine works by blocking voltage-gated sodium channels in neuronal cell membranes, thereby inhibiting nerve impulse conduction and producing local or regional anesthesia. Ephedrine acts primarily as an agonist at alpha-1, beta-1, and beta-2 adrenergic receptors; it increases blood pressure through vasoconstriction (alpha-1), enhances cardiac output (beta-1), and causes bronchodilation (beta-2). The combination may be used to provide local anesthesia with the added benefit of counteracting hypotension or prolonging anesthetic effect via vasoconstriction. While combinations of lidocaine with other sympathomimetics like epinephrine are common in clinical practice for dental or surgical anesthesia[2][3][4], the specific pairing with ephedrine is less commonly documented but may be considered for its pressor effects during procedures where hypotension is a concern[8].