My last email to Hills asked them why they had changed this product and told them that many cats didnt like the new version and would die because of this change and this was their dumb reply:
Hill's Prescription Diet Feline l/d has recently been reformulated to overcome difficulties with sourcing adequate supplies of the beef ingredient. By reformulating the food, we are minimising the risk of interruptions to supply because of ingredient availability.
Please be reassured that the reformulated product provides the same high palatability, nutritional goodness and support for the pet as the previous formulation.
Should an owner with a pet on any therapeutic food encounter difficulties with acceptance, we would encourage the owner to contact their vet for advice at the earliest opportunity. In addition, Hill's staff are always keen to offer help and support, when required. We provide a Veterinary Technical Advice Service, which welcomes contact from veterinary clinic staff, should a vet wish to discuss a pet's feeding using products from our ranges. In addition, the staff on our free Helpline, 0800 282438, are available to offer assistance. This Helpline is available from 9 am to 4 pm, Mondays to Fridays. Please encourage the owner(s) mentioned in your email to contact their vet, if he/she has not already done so, and/or the staff on our Helpline.
We are pleased to learn that one of our foods proved to be of great benefit to your cat and, once again, thank you for taking the time to contact us.
The food they are referring to in last sentence is AD!