Bupivacaine hydrochloride monohydrate is a potent NMDA receptor inhibitor of sodium, L-calcium, and potassium channels.Bupivacaine hydrochloride monohydrate inhibits SCN5A channels and is commonly used in the study of chronic pain.

Halothane (Anestan) is a nonflammable, halogenated, hydrocarbon anesthetic that provides relatively rapid induction with little or no excitement. Analgesia may not be adequate. NITROUS OXIDE is often given concomitantly. Because halothane may not produce sufficient muscle relaxation, supplemental neuromuscular blocking agents may be required.

Procaine hydrochloride (Novocaine HCl) is the hydrochloride salt form of procaine, a benzoic acid derivative with local anesthetic and antiarrhythmic properties. Procaine binds to and inhibits voltage-gated sodiumchannels, thereby inhibiting the ionic flux required for the initiation and conduction of impulses. In addition, this agent increases electrical excitation threshold, reduces rate of rise of action potential and slows nerve impulse propagation thereby causing loss of sensation.

Mephenesin (Cresoxydiol) is a centrally acting muscle relaxant with a short duration of action.

Memantine hydrochloride (Memantine HCl) is an AMANTADINE derivative that has some dopaminergic effects. Memantine hydrochloride has been proposed as an antiparkinson agent.