A review of the anesthesia literature outlines safe limits for use of epinephrine with halothane anesthesia and adequate ventilation. Excluded from the safe category are patients with previous cardiac disease, hypertension, patients taking monoamine oxidase inhibitors and reserpine. Considered as safe is 10 milliliters of 1:100,000 epinephrine in 10 minutes and not more than 30 milliliters of 1:100,000 epinephrine per hour.