Vibegron (MK-4618) is a potent, highly selective β3-adrenoceptor agonist (EC50=1.1 nM). Vibegron can be used for severe urgency urinary incontinence related to overactive bladder[1][2][3].

Vibegron (1~12 μμ; i.v.) exhibits dose dependent decreases in micturition pressure and increases in functional bladder capacity[3].Vibegron (30 mg/kg; p.o.; 4 weeks) upregulates mRNA levels of type 1, type 3 collagen, TGF‐β1, and HIF‐1α[4].Vibegron (1 and 10 mg/kg; i.v.; interval 30 minutes) (10 mg/kg) in oxo-M-treated rats makes bladder capacity significantly decreased compared with oxo-M-not treated rats (intravesical instillation of vehicle)[5].

[1]. Yoshida M, et al. Efficacy of vibegron, a novel β3-adrenoreceptor agonist, on severe urgency urinary incontinence related to overactive bladder: post hoc analysis of a randomized, placebo-controlled, double-blind, comparative phase 3 study. BJU Int. 2020;125(5):709-717.
[2]. Yoshida M, et al. Efficacy of novel β3 -adrenoreceptor agonist vibegron on nocturia in patients with overactive bladder: A post-hoc analysis of a randomized, double-blind, placebo-controlled phase 3 study. Int J Urol. 2019;26(3):369-375.
[3]. Edmondson SD, et al. Discovery of Vibegron: A Potent and Selective β3 Adrenergic Receptor Agonist for the Treatment of Overactive Bladder. J Med Chem. 2016;59(2):609-623.
[4]. Gotoh D, et al. Effects of a new β3-adrenoceptor agonist, vibegron, on neurogenic bladder dysfunction and remodeling in mice with spinal cord injury. Neurourol Urodyn. 2020;39(8):2120-2127.
[5]. Furuta A, et al. Additive effects of intravenous and intravesical application of vibegron, a β3-adrenoceptor agonist, on bladder function in rats with bladder overactivity. Naunyn Schmiedebergs Arch Pharmacol. 2020;393(11):2073-2080.