What the signification of hci ? in most of medicines say. exemplo: cetirizine hci antihistamine 10 mg tablets

Marketing/reality: Basic chemical compounds are known by their complex series components linked in series. Most people would avoid a drug with a weird name, so the come up with a label that is a blend of a simple word and a real component. This one has 2 hydrogen and 1 chloride molecule at the end of its official label so it is called cetirizine (simple made up name) + hydrochloride (sounds scientific)