Beaphar Bone Builder is specially formulated for cats and dogs that are fed home-prepared meat, soya or fish-based diets to help you provide them with the correct balance of vitamins and minerals. Suitable for cats and dogs. IMPORTANT: Do not use if you are feeding your pet a 'complete' diet as this could lead to skeletal problems due to too much calcium and phosphorous in their diet. Not suitable for use during pregnancy without veterinary supervision.