Zylkene Capsules 75mg for Small Dogs or Cats <10kg

Cat showing stress-related cystitis at 8 years old after the death of his cat friend and the arrival of a new kitten at home. Recommended by my vet. 1 capsule, no effect. 2 capsules, still no effect... We even tried the green Zylkene, same result. Doesn’t suit him. Very nervous.

After using the whole package as recommended, it doesn’t work at all....