Most calming products are perfectly safe for your dog. In particular, aromatherapy, pheromone, wearable, and music calming aids are safe because they don’t actually enter your dog’s system. Calming treats, chews, and supplements, though, should be used with a little more caution since your dog will eat them. To make sure that the ingredients won’t affect any health issues your dog has or interfere with any medication he’s taking, check with your veterinarian to make sure they’re safe for your dog.