1+ years. Specially formulated for the unique needs of indoor cats. Advanced nutrition to promote a healthy weight. Gentle fiber blend to help reduce hairballs and promote healthy digestion. Veterinarian recommended. (10% less fat vs. Iams ProActive Health Original with Chicken Formula. Pet food only. Iams ProActive Health Indoor Weight & Hairball Care Formula Cat Food is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for Maintenance. Processed in the USA.