A series of imidazole-containing (non-) chiral carbamates were tested at human histamine H3 receptor (H3R). All compounds displayed Ki values below 100nM. A trend for a stereoselectivity at human H3R was observed for the chiral α-branched ligands. Selected compounds were also tested at human histamine H4 receptor and showed moderate to weak affinities (118–1460nM).