Physostigmine hemisulfate  (Synonyms: Eserine hemisulfate)

Physostigmine hemisulfate (Eserine hemisulfate) is a reversible acetylcholinesterase (AChE) inhibitor. Physostigmine hemisulfate can crosses the blood-brain barrier and stimulates central cholinergic neurotransmission. Physostigmine hemisulfate can reverse memory deficits in transgenic mice with Alzheimer's disease. Physostigmine hemisulfate is also an antidote for anticholinergic poisoning^[1][2][3][4].

Physostigmine hemisulfate (Eserine hemisulfate; 0.03-0.3 mg/kg; s.c.; daily for 6 weeks) improves deficits in contextual and cued memory in Tg(+) mice^[2].
Physostigmine hemisulfate (IV; 0.1, 0.2 mg/kg) delays time to emergence from isoflurane anesthesia at doses ≥0.2 mg/kg in male Sprague-Dawley rats^[4].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

324.38

C₁₅H₂₁N₃O₂.1/2H₂O₄S

64-47-1

CN1[[email protected]](N(C)CC2)([H])[[email protected]]2(C)C3=C1C=CC(OC(NC)=O)=C3.O=S(O)(O)=O.[1/2]

Room temperature in continental US; may vary elsewhere.

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• [1]. Haase U, et al. Pharmakotherapie--physostigmin post OP [Pharmacotherapy--physostigmine administered post-operatively]. Anasthesiol Intensivmed Notfallmed Schmerzther. 2007;42(3):188‐189.  [Content Brief]

  [2]. Dong H, et al, Bertchume A, Vallera D, Csernansky JG. Acetylcholinesterase inhibitors ameliorate behavioral deficits in the Tg2576 mouse model of Alzheimer's disease. Psychopharmacology (Berl). 2005;181(1):145‐152.  [Content Brief]

  [3]. Frascogna N. Physostigmine: is there a role for this antidote in pediatric poisonings? Curr Opin Pediatr. 2007;19(2):201‐205.  [Content Brief]

  [4]. Jonathan D Kenny, et al. Physostigmine and Methylphenidate Induce Distinct Arousal States During Isoflurane General Anesthesia in Rats. Anesth Analg. 2016 Nov;123(5):1210-1219.  [Content Brief]