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The impure blood of an Archdemon, a poison for most beings in the entire universe, even vampires themselves would never be able to drink such blood without melting and falling apart into pieces.
However, it is extremely hard to get, in my previous life I did drink it from the original source, but right now, they are not coming her personally, after all they're all sealed inside of hell. Even if their avatars or vessels are very similar to them, they're not really the archdemons themselves anyways.
They only harbor their souls, and might mutate and become similar to them, but it's not them, their true biological bodies are on another whole level completely…
But this bottle of blood, it says it is actually just Mammon's blood. How was the Grimoire even capable of creating this?
Did it use Mammon's soul to refine and synthetize it into his blood instead? Is that even possible to begin with?