physostigmine definition

  • noun:
    • A crystalline alkaloid, C15H21N3O2, extracted from the calabar-bean, found in medication as a miotic and cholinergic agent and to improve memory in customers with Alzheimer's disease illness. Also referred to as eserine.
    • A parasympathomimetic, a reversible cholinesterase inhibitor alkaloid regarding the Calabar bean, used to treat specific medical ailments.
    • An alkaloid found in the Calabar bean (the seed of Physostigma venenosum), and extracted as a white, tasteless, compound, amorphous or crystalline; -- formerly called eserine, with which it was considered identical.
    • An alkaloid constituting the active concept associated with the Calabar bean.
    • It is a powerful depressant and nerve-poison: accustomed counteract strychnine and atropin, also to contract the pupil. Its formula is C15H21O2N3. Also known as eserine.
    • found in remedy for Alzheimer's disease disease and glaucoma

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