you go to the light house and go up until you see a door and dont go up the ladder after you go through the door theres a rare candy at the end but you go through the door and eventually reach jasmine and talk to her and then go to chianwood city and go to the medicine place and talk to the lady and she will give you the seceret potin dont use it give it to jasmine
On Cianwood Island (beside the Whirl Isles)... i think beside the Pokemon center, there is also a gym there (fighting-type) where you can win the storm badge.
go to cianwood and go to the medicine building
find a way to them talk to jasmine get out of the lighthouse go back to cianwood city and go to the pharmacy talk to the guy and he will give you the medicine
You surf to the left of the island until you get to cianwood city and go into the medicine mans cabin. Once you talk to him, he will give you the medicine and you can either fly back or surf back to the lighthouse to give jasmine the medicine.
Surf to Cianwood City, there is a pharmacy there and the guy inside will give you secret medicine.
You must first talk to Jasmine, located in the top floor of the lighthouse. She will inform you that Amphy needs medicine. Then, go to Cianwood City. The medicine you seek is in the pharmacy there. From that point, give the medicine to Jasmine, and battle her to get the 6th badge.
you need to brought a ampharos
go to cianwood city then get it from a man
go to cianwood pharmacy hope that helped
The girl in the tower, I'm assuming, is Jasmine in the Olivine lighthouse. You have to surf west to Cianwood. There is a pharmacy there that will give you the "Secret Medicine". While you're there you can beat the 6th gym leader, then return to Olivine and give the medicine to Jasmine, after which she will return to her Gym.
You must surf on Routes 40 and 41 to get to Cianwood City. In the city, there will be a pharmacy where you can get a Secret Potion. Give this to Jasmine.
get the secret medicine from the pharmacy to ampharos then beat jasmine
You have to get to the top of the light house and she will ask you to get medicine in a nearby city, get the medicine give it to her and she will return to the gym. ☺