Vet's Best Aspirin-Free Aches & Pains for dogs (50 ct) is a potent formula that helps to quickly relieve and ease temporary discomfort due to regular exercise and normal daily activity (stiff muscles and joints). Perfect for very active dogs involved in physical training and competitions, and senior dogs. Aspirin-Free Aches & Pains contains key natural active ingredients like Glucosamine HCL, MSM, Bromelain, Yucca, and White Willow Bark with aspirin-free salicin. For dogs and puppies 10 months or older, and can be given 2 times daily (use as directed).