Give your pet the support she needs with K9 Select Melatonin Beef Flavor Calming Dog Supplement. Each bottle contains tablets with melatonin that helps provide the perfect support for a large breed’s health and vitality. The beef-flavored supplements address the challenges dogs face, especially during noisy events. These tablets help support the adrenal gland function for a more composed canine as well as support the reduction of cortisol, the stress hormone. The melatonin supplement goes beyond just easing stress and acts as a powerful antioxidant to support the immune system and overall health.