ʻO L-histidine hydrochloride, i ʻike ʻia ʻo Histidine HCl, ʻo ia ke ʻano hydrochloride o ka waikawa amino L-histidine.Hoʻohana pinepine ʻia ʻo ia ma ke ʻano he meaʻai meaʻai a i ʻole he mea maka no nā lāʻau lapaʻau a me nā mea hoʻohui meaʻai.ʻO ka L-histidine kahi amino acid pono, ʻo ia hoʻi ʻaʻole hiki ke hoʻohui ʻia e ke kino a pono e loaʻa mai ka meaʻai a i ʻole nā mea hoʻohui.