A. A drug classified as a sympathomimetic.
B. A barbiturate or an amphetamine that has no direct action on the central nervous system (CNS). There are many drugs in this class, including epinephrine, norepinephrine, and probably dopamine itself. These drugs act primarily by stimulating adrenergic receptors located outside of the CNS but within the peripheral nervous system (PNS). The effects of these drugs generally last only 10 to 20 minutes; however they may persist for several hours depending on how much is taken at one time and who was exposed to it during its course of action. This group also includes cocaine, methamphetamines (meth), marijuana, nicotine products containing tobacco leaves or extracts, reserpine (an extract derived from Rauwolfia serpentina), dextromethorphan (a cough suppressant found in over-the-counter medications like Robitussin DM) codeine/dextropropoxyphene combinations such as Tylenol PM and others with similar chemical structures including prazepam sleeping pills like Restoril Ambien Stadol Ativan Valium Xanax Klonopin Rohypnol Soma etc.. All have some effect on nerve cells where there is either stimulation or blockage of their function using chemicals which mimic neurotransmitters themselves being released into the synaptic gap between two nerve cells via diffusion across cell membranes thus creating impulses out beyond where they normally