Metformin has been primarily recognized as a treatment for type 2 diabetes in humans, functioning by enhancing insulin sensitivity and decreasing glucose production in the liver. In recent years, research within the field of geroscience has explored its broader implications for aging and longevity. Preliminary studies suggest that Metformin may have beneficial effects beyond blood sugar control, potentially influencing pathways related to aging and cellular health. This has sparked interest in its use for canine health, particularly in older dogs or those at risk for age-related diseases. In the context of dogs, Metformin's potential role in promoting longevity is still under investigation. Some studies have indicated that it might help mitigate certain age-related conditions, such as obesity or metabolic disorders, which can impact a dog's quality of life as they age. However, it’s important to note that while the prospects are promising, definitive conclusions regarding its effectiveness for longevity in dogs are yet to be established, and responsible veterinary guidance is essential when considering any medication for your pet.