I have noticed that I do better on brand focalin than I do on generic focalin. I looked at the ingredients, and I found that brand focalin has an extra chemical that helps in dispsersion - its called potato starch A, or something like that. Then I put a brand focalin and a generic focalin each in a cup of water, and the brand dissolved MUCH faster than the generic. So, I believe there is a difference, and I am trying to get medicare to pay for brand, because its $200 per month. Can you give me advice?