you go down to the house next to the Pokemon center and inside is this guy, talk to him and he will give a secret potion.
Cynthia will give it to you.
You get the secret potion by talking to the pharmacist in Cianwood City. His house is in the south, south east of the gym.
cianwood city
The SecretPotion gets rid of the Psyduck on Route 210.
you go down to the house next to the Pokemon center and inside is this guy, talk to him and he will give a secret potion.
Valor Lakefront
Cynthia will give it to you.
You get the secret potion by talking to the pharmacist in Cianwood City. His house is in the south, south east of the gym.
cianwood city
In Cianwood city there should be a Medical store up north of the gym and the man inside the store will give you the secret potion.
You need the Secret Potion, and you can get it at the Cianawood Pharmacy.
Yes, beating the 7th Gym does not effect getting the secret potion.
Go to Pastoria city, and by the Great Marsh entrance you should see a galactic grunt. Keep chasing him until he stops and fights you. After you beat him, Cynthia will come and give you a secret potion. If you use it on the Psyduck, they will move.
hugkjgkjhfiyfdhgd.;iuklucf.;pi9glo,;ol,fvg, secret code
to get the secret potion(medicine)you need to go to cianwood
you have to get the secret potion from Cynthia