Designed for the aging or arthritic Dog. It contains our highest concentration of Microencapsulated Probiotics, Prebiotics, Digestive Enzymes to improve digestion, digestive health and overall health. In addition ProThrive Senior contains Glucosamine, MSM, Hyaluronic Acid, and Yucca Schidigera to help with inflammation and pain management that can occur as a Dog ages All food is shipped ground delivery. Please allow 7 to 12 days for your delivery to arrive. Please note, we do not ship pet food internationally. For more shipping info click here.