PROBLEM TO BE SOLVED: To provide hydrogen water capable of keeping a high hydrogen concentration for a long period and being drunk at the high hydrogen concentration.SOLUTION: A dispersion liquid 40 is prepared by mixing at least one kind of magnesium/calcium 10 among magnesium, a magnesium compound, calcium, and a calcium compound, phosphoric acid and/or a phosphate 20, and water 30. The dispersion liquid 40 gets free of a deposit by acid treatment with an organic acid 50 and is further mixed with an alkali to be preferably pH 1 or more and pH 10 or less, more preferably pH 3 or more and pH 8 or less, and further more preferably pH 3 or more and pH 5 or less. An anode and a cathode are immersed in the dispersion liquid 40 and a predetermined voltage is applied between the electrodes to produce hydrogen water 100, to which a plant extract 70 is added.SELECTED DRAWING: Figure 1【課題】長い間水素濃度を高くでき、水素濃度が高い状態での摂取を可能とすること。【解決手段】マグネシウム、マグネシウム化合物、カルシウム、カルシウム化合物のうちの少なくとも１種のマグネシウム／カルシウム１０と、リン酸及び／またはリン酸塩２０と、水３０とを混合してなり、酸としての有機酸５０の酸処理により沈殿物がなく、好ましくは更にアルカリと混合され、ｐＨ１以上、ｐＨ１０以下、より好ましくはｐＨ３以上、ｐＨ８以下、更に好ましくは、ｐＨ３以上、ｐＨ５以下とした分散液４０に陽極及び陰極を浸漬し、それら電極間を所定の電圧で励起してなる水素水１００であって、植物エキス７０が添加されてなる。【選択図】図１
