go to driftveil market and talk to the women towards the top enterence.
Chat with our AI personalities
In Driftveil market place, you can buy up to a dozen of them.
On Pokemon diamond you use moomoo milk for healing your Pokemon. Moomoo milk heals 100hp and costs P500 P.S. It is p700 cheaper than a Hyper Potion, but the down side is you can only buy them one at a time.
You can buy them in the Pokemon League Pokemon Center.
You can buy them at the Pokemon League and the Route 9 mall.
You buy them at the poke-mart once you have enough badges