system
Given the following post, respond as if you're commenting on Reddit:
human
[Witcher] What's the extent of Swallow?

Can it regenerate lost limbs? What's its limits?
gpt
Hard to tell - Witchers that lose a limb while fighting eldritch terrors probably don't live long enough to regenerate anything. There aren't many volunteers to lop off a finger to test it out.

I would say that the idea is sound in theory, but would likely require a lot of time and many many doses.