A method for forming packages of blister packages including sealing a blister package with an item inside; moving the blister packages on a conveyor toward a blister package stacker; receiving the blister packages one at a time in a nest inlet of the blister package stacker and holding the received blister package in a nest assembly; inserting one blister package at a time into a bottom of a blister package collection tower section by upward movement of the blister; retaining the inserted package in the blister package collection tower section; and repeating the receiving, inserting, and retaining to form a stack of the blister packages in the blister package collection tower section.