PROBLEM TO BE SOLVED: To provide an immunity-activating aqueous solution, which is capable of promoting in-body purification and antioxidant power, eliminating foreign substances including undiscovered foreign substances, repairing affected parts, restraining immune overreactions, and restoring whole body health.SOLUTION: According to the present invention, there is provided an immunity-activating aqueous solution comprising: (a) relative to 1 litter of water, (b) 40 to 160 mg of silver thiosulfate ion (2 to 8 mg in terms of silver), (c) 300 to 1,000 mg of tripotassium citrate (114 to 382 mg in terms of potassium), and (d) 20 to 60 mg of L-ascorbic acid.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】体内の浄化および抗酸化力が進み、未発見の異物を含めて排除、患部を修復し、さらに免疫過剰反応を抑えて全身の健康を回復することが可能な免疫活性化水を提供すること。【解決手段】(a)水1リットルに対し、(b)チオ硫酸銀イオン40~160mg(銀換算で2~8mg)、(c)クエン酸三カリウム300~1,000mg(カリウム換算で114~382mg)、および(d)L-アスコルビン酸20~60mgを混合してなる免疫活性化水。【選択図】図1