Scout Knowles has asked you to deliver the Apothecary's Package to Peppy Wrongnozzle at Westguard Keep.
Right, so I think you should get this stuff over to Peppy Wrongnozzle back at the keep. She's something of an amateur alchemist, but she's the only one we've got.
One thing about Peppy; she does love her drink. So, you'll likely find her at the tavern 'soaking up the atmosphere'.
I'm sure she'll know what to do.