Disclosed is an improved sealing sheet for use to close a container-defining sheet having a top surface comprising a given number of spaced apart cavities embossed therein, each of the cavities being upwardly opened and thus defining a container that is surrounded by a flange that is part of the top surface of the container-defining sheet. In a first configuration, the number of cavities made in the container-defining sheet is thirty-two, positioned in order to define eight rows and four columns. A row of containers is removable from the container-defining sheet towards a second configuration in which the number of cavities made in the container-defining sheet is twenty-eight. The set of containers can more efficiently cover a prescription that has to be administered over a monthly period, under different dosage schedule scenarios, while reducing unused sections of the resulting blister packs.
