Which of the following is used with local anesthetics to potentiate their action?: (A) Adrenaline, (B) Sodium bicarbonate, (C) Both 1 & 2, (D) Dantrolene
Answer is B. Adrenaline is a vasoconstrictor that prolongs duration of local anesthetics & prevents systemic toxicity.
Sodium bicarbonate speeds the action of local anesthetics by increasing the unionized form.