Have you thought about the Kevin Bacon supplement? Takes a little while to change (as all do) but the results are fab. Mine had truly shabby feet when I bought her and now the farrier comments on how lovely they are - haven't lost a shoe for two and a half years. Obviously, the condition of her feet is down to what an ace farrier I have, not the supplement (just in case he's reading
) Expensive at first but I only give her a third of the rec. dose now that it's in her system.
HTH