it's safe to assume that the super regenerative medicine is gonna make him recover to full health or close to that, judging by the side effects.
Zoro is literally immobile so the medicine being able to at least recover his bones is already super regeneration. Remember broken bones Zoro is already still able to fight the yonko without broken bones he should already be fine enough
100% health means it’s a Senku bean. Zoro regains his Stamina, Muscles damage, Broken bones. The blood that he lost returns. His organs recombine. The works.
I doubt all this would happen. I think this is just for the broken bones. His blood loss and Stamina loss won’t recover.
At best, I think Zoro will be at 70% from like the 20% he is at right now. And that’s still counted as Super regeneration