Nebivolol O-β-D-glucuronide is an active metabolite of the β1-adrenergic receptor antagonist nebivolol (Item No. 23660).1,2 This product is a mixture of D-nebivolol-11-O-β-D-glucuronide, L-nebivolol-11-O-β-D-glucuronide, D-nebivolol-11'-O-β-D-glucuronide, and L-nebivolol-11'-O-β-D-glucuronide.WARNING This product is not for human or veterinary use.