If your veterinarian recommends a smaller dose of milk thistle, those dosages are often based on milk thistle concentrated extract. If your veterinarian recommends a smaller dose of milk thistle, those dosages are often based on milk thistle concentrated extract. Our milk thistle is whole ground seed of milk thistle and because we use the whole seed, there’s 5x more volume of powder than concentrated extract. So, while our daily recommendations are higher, there’s still a comparable amount of active ingredient (3%) needed to be effective.