Camicinal hydrochloride (GSK962040 hydrochloride) is a small molecule, selective motilin receptor agonist with pEC 50 of 7.9. In Vitro Camicinal hydrochloride (GSK962040 hydrochloride) had no significant activity at a range of other receptors (including ghrelin), ion channels and enzymes. In rabbit gastric antrum, Camicinal hydrochloride (GSK962040 hydrochloride) 300 nmol L 1-10 μmol L 1 caused a prolonged facilitation of the amplitude of cholinergically mediated contractions, to a maximum of 248 ± 47% at 3 μmol L 1. The pEC50 values for motilin, erythromycin and Camicinal hydrochloride (GSK962040 hydrochloride) were, respectively, 10.4 ± 0.01 (n = 770), 7.3 ± 0.29 (n = 4) and 7.9 ± 0.09 (n = 17) . Camicinal hydrochloride (GSK962040 hydrochloride) activated the dog motilin receptor (pEC50 5.79; intrinsic activity 0.72, compared with [Nle13]-motilin) . Camicinal hydrochloride (GSK962040 hydrochloride) was preferred because its initial IC 50 values at CYP3A4 were significantly higher than our preferred threshold of 10 μM . MCE has not independently confirmed the accuracy of these methods. They are for reference only. In Vivo Camicinal (GSK962040) (5 mg free base kg 1) also produced an increase in total faecal weight over the 2-h postdose period (21.2 ± 4.5 g; P 1.14 μmol L 1. After the effects of Camicinal (GSK962040) faded, migrating motor complex (MMC) activity returned. Migrating motor complex restoration was unaffected by 3 mg kg 1 Camicinal (GSK962040) but at 6 mg kg 1, MMCs returned 253 min after dosing, compared with 101 min after saline (n = 5 each) . he oral bioavailability (Fpo) of Camicinal (GSK962040) was found to be 48 ( 13%. Camicinal (GSK962040) shows a long lasting effect (T1/2 ) 46.9 ( 5.0 min at 3 μM) when compared with the short-lived effect of [Nle13]motilin (T1/2 ) 11.4 ( 1.5 min at 0.3 μM) . Camicinal (GSK962040) strongly facilitated cholinergic activity in the antrum, with lower activity in fundus and small intestine only. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Form:Solid IC50& Target:pEC50: 7.9 (Motilin Receptor)