Aspirin-Free Aches & Pains Formula helps sore, stiff muscles that result from regular exercise and normal daily activity. Contains white willow bark, with aspirin-free salicin, glucosamine, MSM, bromelain and yucca to help maintain normal, healthy joint function and flexibility. Includes 50 chewable tablets. This product proudly displays the seal of the National Animal Supplement Council (NASC), a symbol of quality assurance.