Relief for pets experiencing discomfort in their muscles and joints. Relief for pet parents who want an all-natural solution to help very active dogs and senior dogs feel better. Vet's Best Aspirin Free Aches & Pains Dog Supplements combine quality, natural anti-inflammatories -- such as Glucosamine HCL, Pineapple Bromelain, MSM, and White Willow Bark -- for quick pain relief.