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A combination agent, comprised of belladonna alkaloids and Phenobarbital, with gastrointestinal anticholinergic activity. The belladonna alkaloids produce an anticholinergic effect by the competitive inhibition of acetylcholine at the parasympathetic neuro-effector junction, and the barbiturates produce a sedative effect probably as a result of their inhibition of synaptic neurotransmitters in the central nervous system (CNS).
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