My first dog was a rescue from Spain, Grace was a special dog but was in a terrible anxious state, terrified of everything and everybody. The road was long but one of the things that helped her was adding crushed dried Chamomile to her food, to help her tummy adjust and calm her anxiety. It worked! I have since given it in tea form to Dylan my new boy who is terrified of guns shots and loud noises.
Chamomile is such a gentle herb, good for helping to calm, ease stress and settle tummy upsets and can be shared with humans!
If in doubt check with your vet.
caffeine free , no additives, grown in Devon.