A new insulin pill inspired by a tortoise that can flip itself over when on its back promises to end the misery of daily jabs for diabetics, a new study found. The blueberry-sized capsule could replace the daily injections taken by type 2 diabetics by injecting insulin in the stomach painlessly. It contains a small needle made of compressed insulin, which is injected after the capsule reaches the stomach. US scientist based the pill's design on the African leopard tortoise which has a shell with a high, steep dome, allowing it to right itself if it rolls onto its back. They came up with a variant of this shape for their capsule so that no matter how the capsule lands in the stomach, it can orient itself so the needle is in contact with the lining of the stomach.