Bring him the three ingredients and he will mix them (if you wear a grass skirt).
Shark Tooth Island
The medicine man is the person in the palm tree next to the Ancient Ruins.
You use it to make the medicine for The great Booga
you have go into that really big tree
You keep it until the medicine man uses it.
The medicine man makes you a potion in a coconut. Shoot it at the shark and it will fall asleep. Swim to the island on the right.
you have to wear the grass skirt
You wear a grass skirt from a stall
A coconut bone and secret ingredient
Wear a grass skirt (he doesn't talk to outsiders).
a bone, a gold pot and carbonated coconut milk
There is this man on this building that makes coconut medicines and you need a medicine that will put him to sleep