go to veilstone city and go into the department store and look.
jeez you don"t know Pokemon very well
Abe chutiye super potion nahi hai , sercret potion hai
get the secret potion and give it to cynthia
Get the secret potion from Cynthia
Valor Lakefront
you give it to the psyduck
Cynthia will give it to you.
The SecretPotion gets rid of the Psyduck on Route 210.
There is no legitimate secret potion cheat for Pokémon Diamond, Pearl and Platinum version. One way to do this would be to use an Action Replay.
A bit up from the grand lake hotel, you will find Cynthia who gives you the secret potion. Also it will be needed to get to Celestic town, you use it on the Psyduck at route 210. Hope it helped!!
you get the secret potion from Cynthia then go to route 10 press A in front of the psyduck then they move.
you need to get a secret potion to cure the kcklon just like in damond and pearl ecxpect psyduck
u have to head to the top of the light house and the gym leader will be there and then go to cianwood city and go to the farmacey and the man will give u the potion
you have to go to cianwood city go to the herb shop get the secret potion and then bring it to the top of the light house make sure you talk to her before you get the secret potion it will be a Key item