What is the ruling of Islamic law on extracting bull semen, packaging it with other added substances, and then marketing it in stores for human consumption as a paste to enhance male sexual desire?

Using sexual stimulants is permissible as long as they do not lead to significant harm, and purity is a condition for them. As for the "semen" of an animal whose meat is permissible to eat, there is a difference of opinion among scholars: the majority consider it impure, while some consider it pure. The ruling on selling it and benefiting from it branches off this difference: it is not permissible according to the opinion that it is impure, and it is permissible according to the opinion that it is pure. However, it is not permissible to eat semen, even if it is pure, due to its repulsiveness. Furthermore, using impure substances for treatment is not permissible except in cases of necessity and the absence of a pure alternative. Therefore, it is advisable to stay away from such a project.