Are animal ingredients in sexual potency products, such as goat and deer bone, considered unlawful (haram)?

If the bones of the aforementioned animals have been chemically treated and transformed into another substance, then there is no objection to using Viagra pills, because transformation (istihalah) purifies. However, if they were used before their transformation, and if they were from a marine animal or an animal slaughtered according to Islamic law (dhakī), then there is no objection. Otherwise, they must be avoided, because the default ruling for meats and bones is prohibition until proof of permissibility is established.