Beef is not an active ingredient in the Advanced Hip + Joint Complex, but a small amount is used as a natural flavoring. Our organic beef flavouring is made from USDA-inspected beef. It is uniquely processed, leaving very little of the reactive proteins available. By NOT having a full protein mass it can be used in "hypo-allergenic" diets and is generally considered safe for dogs with allergies. If you know that your dog has a specific beef allergy, or you suspect this may be the case, we suggest that you contact your veterinarian and discuss the beef flavoring that we use. And when in doubt, with your veterinarian’s approval we also suggest using a small or partial dose to observe possible allergic symptoms, and then decide to use or discontinue use. We offer a 30-day money back guarantee. You may also want to use our Advanced Hip + Joint Complex formula instead as it comes in chicken flavor and has no beef-related ingredients at all. Order Early Stage Hip + Joint Complex Now for Your Dog