Helps Keep Your Pet Calm and Relaxed Quality Seal - NASC - National Animal Supplement Council For Use In Dogs and Cats Only Now Pets Pet Relaxant is formulated to promote relaxation and contentment during changes to your pet's daily routine, which can include separation, travel, motion sickness and/or tension. This health supplement is made with natural botanicals and has been formulated by renowned veterinarian Dr. Barbara Royal, DVM, CVA, founder of The Royal Treatment Veterinary Center.