Eterna® is our custom Urolithin A formula - the core of Breadcrumbs™ and our unique advantage. Urolithin A is a breakthrough compound that renews mitochondria, the “power plants” of your cells, to support lasting energy and strength. Since most people can’t make enough from diet alone, Eterna® delivers a clinically studied dose in every serving, backed by 15+ years of research and made in GMP-certified facilities without stimulants or fillers. It’s designed to help you feel stronger, recover faster, and maintain vitality you can count on.

Unlike trendy powders or hyped “superfruit” claims, Breadcrumbs Eterna® is built on peer-reviewed human clinical trials. In published studies, adults aged 40–90 who took Urolithin A showed measurable gains in muscle strength, endurance, and mitochondrial health - the root driver of lasting energy.

And it’s not just the science - real people in their 50s, 60s, and 70s consistently report feeling stronger, clearer, and more energized within weeks. In other words: this isn’t marketing spin - it’s one of the most studied and trusted longevity compounds available today.

FDA-recognized as safe (GRAS), produced in GMP-certified facilities, and formulated at the exact dosages proven effective in trials.

Urolithin A has shown an excellent safety profile in human studies at 500–1,000 mg/day for up to 4 months, with no serious adverse events reported. A small number of people note mild, short-lived GI upset or a headache; taking with food and staying hydrated usually helps. If you have a medical condition, are pregnant/nursing, or have specific concerns, check with your clinician first.

There are no widely documented drug to drug interactions for Urolithin A, but everyone’s health picture is different. If you take prescription meds (including blood thinners) or are on HRT, share the supplement facts with your healthcare provider to confirm fit. Start with the suggested dose and monitor how you feel.

Benefits build with consistent daily use - most people notice changes between 8–12 weeks, with deeper cellular effects reported by 4 months. There’s no known tolerance or dependency, so cycling isn’t required; you can pause and restart if needed. Think of it like nutrition for your cells - the longer you feed them, the more support they get.

No. Urolithin A is not a stimulant (no caffeine), and it works by renewing at a cellular level, rather than spiking you and crashing later. You can take it morning or with your largest meal; if you’re very sensitive, take it earlier in the day and see what feels best.

Most people can’t reliably make Urolithin A from food (only ~40% convert from pomegranate/ellagitannins), so a clinical dose delivers what diet alone often can’t. Human trials using 500–1,000 mg/day report improvements in muscle strength/endurance and favorable shifts in cellular biomarkers - plus our feel better guarantee means you can evaluate it in your real life. On a per-day basis, it often replaces multiple “energy/anti-fatigue” products while targeting the root cause (tired mitochondria), not just the symptoms.