The formulation of Pet-Med Distress Spray combines Aconite, Argentum nit, Borax, Gelsemium, Kali phos, and Scutellaria. In homeopathic use, these ingredients are commonly chosen to support pets during stress, fear, nervousness, and change, including loud noises, vet visits, and unsettled behaviour at home.
The extra value in the blend is that it can cover shock, anticipation, trembling, and that generally anxious, wound-up state.
This also helps explain why kali phos and scutellaria are both commonly linked with nervous system support, which helps round out the formula.