Product Overview: Adaptil Calm Collar for Dogs Large is a wearable collar designed to reduce anxiety in dogs by releasing calming pheromones. Specifications: ‣ Dosage Form: Collar ‣ Active Ingredients: Dog-appeasing pheromones ‣ Pet Type: Dogs ‣ Pet Age Range: All ages ‣ Dosage: Replace collar every 4 weeks Key Features: ‣ On-the-Go Calm: Portable calming for large dogs. ‣ Long-Lasting: Lasts up to 4 weeks. ‣ Safe: Non-sedating, stress-relief solution.