Seek out someone that can help at Bloodhoof Village in Mulgore.
Part 3 of 6 in this series
Kaylee and I were coming to Mulgore, for... Stuff! I'll tell you later, but she was poisoned by one of their arrows. It's taking all my concentration and power to slow the poison down and not let her die. Please find someone that can help wherever you came from! I need an antidote!
Hail friend, what is the matter?
You need an antidote for Centaur poison? I'm afraid my last batch was used days ago... Do not despair though, I may still be able to help!
!?