Over the years, the growth of the pharmaceutical industry has also driven the development and evolution of capsules as a medicine delivery method. By allowing patients to take medicine orally has made this field of medical treatment much less invasive than giving subjects needles and/or suppositories, thereby making capsules a highly popular option among the general public. Wondering how this vehicle came about in the first place? This article will uncover secret history of capsules, revealing the pioneers behind this important invention in modern medicine, from a primitive empty capsule filling machine to modern capsule filling devices like the ProFiller system.