Is selling medications for treating erectile dysfunction, such as Viagra, to pharmacies permissible (halal) or forbidden (haram), and what are the conditions for its permissibility?

There is no legal impediment to working in the trade and manufacture of medicines, provided that this is governed by Sharia regulations, in terms of transactions and manufacturing, and ensuring that no forbidden, impure, or harmful substances are used in their production. This also includes medicines for erectile dysfunction.