maximum concentrations of guanabenz in plasma (1.2 to 5.2 ng/ml) reached 2 to 5 hours after administration of capsules containing 16 or 32 mg of 14c-labelled guanabenz. guanabenz was 90% bound to human plasma proteins [1]. guanabenz competed for imidazoline i2-binding sites in brown adipose tissue with ki of 97 nm [3].
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[3] rmer l, wurster s, savola j m, et al. identification and characterization of the imidazoline i2b-binding sites in the hamster brown adipose tissue as a study model for imidazoline receptors[j]. archives of physiology and biochemistry, 2003, 111(2): 159-166.
