Adaptil Calm - Anti-stress for dogs - Fears, LOUD NOISES, Learning, Adoption - Collar M / L for Medium and Large Dogs natural solution that provides a continuous calming effect in stressful situations. Useful to reduce signs of stress inside and outside the home: difficulty being alone, afraid of noises, anxiety during movements, changes in routines or stays in nursing homes, among others. Adjustable collar for medium and large dogs: lasting up to 30 days. Proven: recommended and used by veterinarians, educators dogs and breeders. No drowsy or have risk to humans or other animals: Adaptil Calm provides calm and security to maintain its activity and dogs waking state.