Oolutanga is no longer under Mudmouth's control. Speak to Ook the tusker in Tou-Tou or Grunter the tuskie who lives with Bobo for more information on what you can do to help.

Ook tells you, "Yeah! We save Bobo! Ooo! Ook!"
Ook tells you, "Humans like Tuskers now! I show you how to eat nanners with your feet sometime, Ook."
Ook tells you, "Only bad thing is Mudmouth get away. You find him and mash him good for the bad things he did, Ook!"
Ook tells you, "Jilna ask me to tell you she in Bobo Town now. She still making potions for bobo to not be sick. Ook."

Grunter tells you, "Isn't Bobo great? You should talk to Jilna in Oo.. OLoo... Bobo's Refuge at the base of the volcano. She's a nice human who makes potions for Bobo to keep him from getting sleepy and sick."
Grunter tells you, "Bobo showed that ugly old Mudmouth! He drove Mudmouth away from Tusker Island with his mighty stone fist! Stupid, bad Mudmouth."

Head to Oolutanga's Refuge and speak with Jilna Fullgood, who is now standing beside the healer.

Jilna Fullgood tells you, "Now that King Ooluntanga is free of Mudmouth's hold I can treat him for the Jungle Orchid poison Mudmouth gave him. It's amazing he survived really. That much poison would have killed any normal Tusker. To create more of the potion he needs I'll need more King's Crown."
Jilna Fullgood tells you, "You can find the King's Crown water lily at the base of the giant tree overlooking the chapel of Xi Ru on the last of the Vesayen Islands. Be careful, I hear it is protected by Moarsmen."
Jilna Fullgood tells you, "Oh, if you are able to find and destroy Mudmouth, I have been honored by Oolutanga to reward you in exchange for any befouled treasures he may have wrought."

The King's Crown is still in the same location and still on the same timer as it was from the previous quest, Bobo Redeemer. Pick another lily and bring it to Jilna.

You give Jilna Fullgood King's Crown.
Jilna Fullgood tells you, "Yes, this looks perfect."
Jilna places the white petals of the flower into a mortar and sprinkles a number of dried herbs over it. She then uses her pestle to grind the ingredients together and adds the resulting powder to a potion of blue liquid. The potion fizzes and its blue color swirls to a pearlescent white.
Jilna Fullgood tells you, "Excellent, take this potion to Oolutanga and see that he drinks the whole thing."
Jilna Fullgood gives you King's Crown Infusion.

It is very important to note that the King's Crown Infusion is Attuned and Destroyed on Death. If you die while running to bobo you will lose the potion.

You give Oolutanga, the Tusker King King's Crown Infusion.
Oolutanga, the Tusker King tells you, "I Oolutanga thank you. It isn't easy to make decisions for the betterment of all tuskers when Oolutanga, who is me, is sleepy."
Oolutanga gurgles the potion down and a wide smile spreads across his face as he smacks his lips noisily. His eyes shine with a renewed brightness.
Oolutanga, the Tusker King tells you, "You who are not Oolutanga have done well for a non-tusker. I will show you how I make other Tuskers smart like me, Oolutanga."
Oolutanga leans forward and hits you on the head with his giant stone hand. You feel a flood of awareness spread from the lump he made.
You've earned 70,424,497 experience. (level 165, 6.67% of level)