Several natural herbal remedies exist to help reduce stress levels in cats, including catnip, valerian and chamomile, notes PetMD. Some other natural remedies include hops and Bach Rescue Remedy.
The best way to administer these natural herbal remedies to cats is through a tube collar or a tiny pillow with dry herbs inside, notes PetMD. This helps the cat from eating too much of the herbs. Pet owners can also use tinctures to place in the cat's water dish or directly in its mouth, but these must be made by a professional for safety reasons. Cats must never consume these herbs as essential oils because their livers cannot process them, which can lead to illness or death.