Bring Ken'zigla's Draught to Dogran in the Barrens.
You've made it this far, so if you want to see this through to the end, I won't stop you. I can't spare you any additional manpower though, you'll be on your own.
Dogran is being held in a quilboar camp to the north of here. Look for a group of two huts. He'll be heavily guarded--that is, if they haven't killed him yet, or he hasn't succumbed to his wounds.