Urolithin A is a metabolite produced by gut microbiota from ellagitannins, which are found in foods like pomegranates, berries, and walnuts. Since not everyone’s gut microbiota can efficiently produce it, its bioavailability varies from person to person. Key benefits of Urolithin A include stimulating mitophagy (removal of damaged mitochondria), improving mitochondrial function and gene expression , enhancing muscle strength and endurance. Due to its potential benefits for aging, muscle health, and energy metabolism, Urolithin A has gained interest in longevity research. The recommended daily dose is 500-1000 mg per day.