An object of the present invention is to provide a gel comprising a reduced pyrroloquinoline quinone derivative or a salt thereof and a method for producing the same in a simple way and with high efficiency. According to the present invention, there is provided a gel comprising a reduced pyrroloquinoline quinone derivative or a salt thereof by mixing an oxidized pyrroloquinoline quinone derivative or a salt thereof, a dispersant, and a reducing agent at 50° C. or lower, and a method for producing the same.
