Nebracetam hydrochloride, a nootropic M1-muscarinic agonist, induces a rise of intracellular Ca2+ concentration. Nebracetam hydrochloride exhibits an EC50 of 1.59 mM for elevating [Ca2+]i[1].
Nebracetam (10 mg/kg, p.o.) involves not only cholinergic mechanisms but also involves lymbic and hippocampal noradrenergic mechanisms[2]. Animal Model: Male Wistar rats weighing 200-250 g[2].
[1]. Kitamura Y, et al. Effects of nebracetam (WEB 1881 FU), a novel nootropic, as a M1-muscarinic agonist. Jpn J Pharmacol. 1991 Jan;55(1):177-80. [2]. Iwasaki K, et al. Effect of nebracetam on the disruption of spatial cognition in rats. Jpn J Pharmacol. 1992 Feb;58(2):117-26.