According to embodiments of the present invention, composite particles comprising a water-soluble silicate and a human essential mineral can be provided in the form of an easily ingested solution. The silicate drink is represented by chemical formula 1, which is M_2-SiO_3nH_2O. In chemical formula 1, M is an alkali metal element, and n is an integer within a range of 1 to 10.COPYRIGHT KIPO 2018본 발명의 구현예들에 따르면, 수용성 규산염 및 인체 필수 무기질을 포함하는 복합 입자를, 쉽게 섭취할 수 있는 용액 형태로 제공할 수 있다.