Equine america cortaflex ha super fenn powder the equine america cortaflex ha super fen powder has been developed with cortaflex and fortified with silicon that is ideal for horses with high work loads and have excessive wear on their joints joint health powder 2 months supply to be used as part of a balanced diet technological additives monosilic acid e551a 500mgkg glycine glutamine acid l proline aspartic acid l alanine l serine preservatives ammonium prop