Kirkland Signature Sleep Aid Doxylamine Succinate 25 Mg 2 Bottles X 96 Tabs and 3D Sleep Mask Alive Intensity together are a powerful sleep aid for adults that helps promote restful and consistent sleep. This product contains doxylamine succinate, which is an antihistamine that has been clinically proven to be safe and effective in helping people fall asleep faster. This product also contains 3D technology, which helps reduce the time it takes to fall asleep by up to 45%. With its easy-to-swallow tablets, Kirkland Signature Sleep Aid will help you get the quality of sleep you need so you can wake up feeling refreshed each morning.