You have to wear a grass skirt [find it at the beach part of the island] and then give him the ingrediants. If that does not work than i do not know.
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you go and get the ingredients for the calming potion. That are behind the door then you go see the medicine man after you got the ingredients and he`ll make the potion for booga. Then you go and feed the shark the potion (which is in a coconut) and he`ll go to sleep. after that you go meet the hammerhead guy and bring him back to the island where your blimp is once you do that he will give you the medallion.
Well if your asking about Shark Tooth island he is on the island past the coconut launcher. Get all the ingredients for medicine man and give them to him. He will make a potion in a coconut, go the the coconut cannon and shoot the potion coconut in the water and you'll see the shark come and eat it. He will fall asleep and you can cross. There you will find the son and Dr Hammerhed
Secret Potion
if you mean the medicine for 'amphy' in the light house, go to the medicine man in cianwood city he will give you a 'secret potion'
You can't give people potions. They would have to find it themselves.
secret potion. you can find it at the olivine city in that medicine shop.
all you have to do is find all of the ingredients and click on the medicine man.
Push the big rock over to the right and climb the vine to his hut at the top of the tower. Wear a grass skirt because he only works for islanders. Give him the three ingredients and he will mix them for you.
You have to get the key ingredient and the bone from inside the shark temple and the coconut milk from the guy near the Coconut Cafe. Just take the all the ingredients to the Medicine Man at the top of the coconut tree near the shark temple and he will give you a sleepy potion coconut.
go to cianwood city using surf,go to the house with a sign,and if that sign says medicine house,go and talk to that guy,and he'll give you the potion.
You give the potion to whom?