I am playing Pokémon Pearl and I want to know where to find cheap medicine. I want to know where to buy items such as Moomoo Milk and Lemonade that cost less than normal potions and Herbal medicines.
There is nowhere you can get "cheap" medicine. The prices you see are the prices you get. However, if you're looking for the most cost effective items for healing, the Fresh Water (heals for 50) and Energy Root (heals for 200) offer the most bang for your buck. Fresh Water is found at the Veilstone Department Store top floor, and Energy Root is found at the Herb Shop in Eterna City.