A serpentine dispenser and cartridge system provides simplified stocking and restocking of the dispenser, as well as jam-free dispenser feeding. Cartridge opening flaps allow a cartridge be inverted and inserted into a dispenser while products in the cartridge are prevented from falling out. A dispenser wedge applies pressure on rolling products as the cartridge is inserted into the dispenser, forcing a retaining flap open so that rolling products may exit the cartridge and enter the dispenser. The wedge may also constrain rolling products to exit the cartridge in an order that prevents jamming.