HDPE stands for High-density Polyethylene, and it is manufactured from petroleum. HDPE is used for making HDPE plastic bottles like HDPE pill bottles. In addition to packaging medications,HDPE plastic bottles are used for packaging various products, such as milk, juice, water, cosmetics, and household cleaners. Plus, recycled HDPE is used to make various products, such as buckets, crates, flower pots, and floor tiles.