I recommended what flake you try, but if you don't want to buy it online that's up to you. I have never seen any decent medicated food on sale at any LFS, ever. If I had to try anything from the LFS it would probably be the New Life Spectrum Ther-A food as a complimentary treatment, which doesn't even contain medication but mega doses of garlic, which is recommended by experts such as Jack Wattley (prominent discus breeder).
But what should work for you, because it worked for me, is deworming flake with Fenbendazole, which you can get at the Angels Plus site or on Aquabid. If I did not make that clear enough (I thought I did) then my apologies.
But I have to say your attitude is not the greatest, from when you first started this post "No one knows anything!" (your words, verbatim) to this last comment you made. I can understand being frustrated, but there's no need to take it out on the people who do nothing except give you advice for free.