Meprylcaine (also known as Epirocaine and Oracaine) is a local anesthetic with stimulant properties that is structurally related to dimethocaine. Meprylcaine has a relatively potent inhibitory action on the monoamine transporter and inhibits the reuptake of dopamine, norepinephrine and serotonin. Oracaine is commonly used as the hydrochloride salt and is compatible with the known vasoconstrictors. It has a slightly more rapid onset than procaine with a slight increase in potency. The earliest symptoms of a toxic overdose are stimulation to the central nervous system, thus following the same symptoms as procaine. Not more than 400 mg. (20 ml. of a 2 per cent solution) should be used at any one time for the ambulatory patient. Oracaine, like metycaine, may be used for patients sensitive to the para-aminobenzoic acid derivatives. Oracaine hydrochloride is used at present mainly by the dental profession and in dermatologic surgery.