Drugs are chemicals, and so there’s a need to ensure that they will not react with the material they are contained in. High-density polyethylene bottles are the best to contain drugs in tablet or capsule form because they are versatile, durable and renowned for their chemical-resistance. They are widely applicable across industries but find important use in pharmacy, especially because of their moisture resistance, rigidity, and ability to hold through various conditions, including below-freezing temperatures.