you go to the city before the safarie zone.
Secret Potion
To get the medicine for the Olivine Lighthouse's Ampharos you must have a Pokemon that knows surf. Surf to Cianwood, get the medicine from the medicine shop, surf back to Olivine, and give the medicine to Ampharos.
In olivine city.
You have to beat Cianwood gym, get the medicine from the Cianwood medicine shop, and take it to the top of the lighthouse. Then, the gym leader of Olivine will fight you. Good luck!
You have to surf to cianwood, which is south of Olivine, and get the medicine in one of the houses there! Then go to the lighthouse and talk to Jasmine, and voila! Go get that biddys badge!
Cinawood city, which is in the next town after the one with the lighthouse.
I have HeartGold and in Cianwood theres a store there and go in and he'll give you the SuperPotion or something like that. Give it to Jasmine and then Ampharos will light up.Pokemon soul silver the Pokemon in the Olivine City Lighthouse Needs medicine, you can get the medicine in the Cianwood City and you get it in the pharmancy next to the medical center
you have to go up the stairs from the bottom level and fight your way up to the top. then she will ask you to go across the sea to cianwood to get medicine for the pokemon. after you get the medicine from the last house on the bottom left, go back using the elevator and give her the medicine and she will go back to the gym
in order to do that you have to help the lady in the lighthouse
Get an S.S. Ticket from Prof. Elm(i believe its elm) then take to ship to kanto and the gym leader is in the lighthouse with a sick pokemon, you then talk to her and get the medicine and bring it back to her. Once this is done she will return to her gym
First, you have to go to the lighthouse in Olivine and get to the top of the lighthouse and talk to the lady with the Ampharos. After that she will tell you go to Cianwood's pharmacy to get medicine for her Ampharos. You go back to Cianwood, got to the pharmacy and talk to the guy and he will give you the correct medicine. Then, you go back to the lighthouse, give her the medicine. Then she will go back to the gym for her to battle.
Get the special medicine from cianwood and heal ampharos at the lighthouse, some guy will give you it, I think.