Is it permissible for Muslims to use medicines and products extracted from animal organs (such as insulin derived from pigs or medicines containing bovine liver and its hormones) to treat Muslim and non-Muslim patients?

It is not permissible to use medicines made from unlawful or impure substances, or those made from an animal that has not been slaughtered Islamically (non-halal (definition)) or whose meat is not permissible to eat. This is based on the Prophet's (peace be upon him) saying: "Indeed, Allah has not made your cure in that which He has forbidden to you," and his saying regarding intoxicants: "Verily, it is a disease and not a cure." This includes pork. Furthermore, jurists have affirmed that it is not permissible to seek healing with that which is forbidden, nor with anything that contains forbidden ingredients. This situation is not comparable to the case of someone compelled to eat a dead animal (carrion), as seeking treatment is not obligatory, nor is a specific medicine indispensable. Therefore, it is not permissible for a doctor to use forbidden medicines in treatment.