Dr. Jonathann Kuo, MD
Extension Health | CEO
Dr. Kuo advises on clinical safety, protocol design, and evidence-backed health optimization.
LONGER+ is daily cellular optimization for people already doing the work. One scoop stacks 1g Urolithin A, 300mg NMN, and 800mg GlyNAC — research-backed ingredients to support autophagy and mitochondrial health.
Auto-refills every 30 days at $99/month. Skip, pause, or cancel anytime.
One-time Purchase for $120 →"The short time I have been using Longer and Stronger I have definitely felt a difference. Stronger has resulted in better workouts and better recovery. It improves power and strength. Longer seems to help with better sleep."
Advisory Team
World-class clinicians and scientists ensuring safety, efficacy, and scientific rigor at every step.
Extension Health | CEO
Dr. Kuo advises on clinical safety, protocol design, and evidence-backed health optimization.
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Five cellular maintenance mechanisms, transparent doses, and a micronutrient foundation designed to replace the scattered daily stack.
The routine
LONGER+ consolidates a serious longevity stack — Urolithin A, NMN and GlyNAC — into one transparent daily formula.
Inside the ingredients
Select a core ingredient to explore the research behind it.
Gut-derived mitophagy activator
Urolithin A helps your cells clear out and recycle their worn-out mitochondria — the tiny structures that produce your body's energy — so the healthier ones can keep working efficiently.
Nicotinamide mononucleotide
NMN is a compound your body converts into NAD⁺ — a molecule your cells rely on to produce energy and carry out essential repair processes — which naturally declines with age.
Glycine + N-acetylcysteine
GlyNAC is a combination of two amino acids (glycine and N-acetylcysteine) that supply the building blocks your body needs to make glutathione, its main internal antioxidant.
These complementary ingredients support the core actives by promoting energy metabolism, cellular health, recovery, antioxidant defence and micronutrient sufficiency, with each selected for its clinically studied benefits: creatine, betaine, Ca-AKG, apigenin, ginger, turmeric, quercetin, CoQ10, spermidine, vitamin K2, and core micronutrients including vitamins C, D3, B6, B12, methylfolate, magnesium, zinc and copper.
Research described above is drawn from studies of the individual ingredients. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
A daily cellular maintenance formula built to replace scattered bottles, generic multis, underdosed blends, and routines that are hard to repeat.
LONGER+ is daily infrastructure, not instant stimulation. It is designed to support cellular health pathways with consistent use. Individual results vary.
One scoop joins your morning routine and replaces 6–8 separate longevity products with one transparent formula.
You stop rebuilding the routine from bottles, reorder dates, partial doses, and overlapping labels.
The 1g Urolithin A dose is designed to support mitochondrial quality and endurance over months of consistent use.
GlyNAC is included to support glutathione production, antioxidant defense, mitochondrial function, and healthy aging pathways.
Use LONGER+ daily as part of your forward-looking health routine. Flexible refills are available when you want the routine stocked.
Straight answers about the label, the routine, and what makes LONGER+ different.
LONGER+ is a daily longevity formula combining Urolithin A, NMN, GlyNAC, and supporting ingredients to support cellular maintenance, mitochondrial function, and healthy aging.
Urolithin A (Mitopure®), NMN (Nicotinamide Mononucleotide), GlyNAC, Spermidine, and supporting cofactors. Full Supplement Facts panel above.
Mix one scoop with water or your beverage of choice. Take daily, ideally in the morning with food.
No. The micronutrients are the foundation, not the whole formula. The premium is in what surrounds them: 1g Urolithin A, 300mg NMN, 800mg GlyNAC, quercetin, spermidine, and mitochondrial cofactors.
No. The refill option is there for people who want the routine stocked automatically and prefer preferred pricing. You can skip, pause, or cancel anytime.
Several ingredients in LONGER+ are fat-soluble. Taking with a meal supports absorption.
Yes. Take LONGER+ in the morning with food and STRONGER+ before training.
Subscribe and your next order ships automatically on the schedule you choose. Edit, skip, or cancel anytime in your account.
LONGER+ is not a stimulant. It is designed to support cellular maintenance over time. Ingredients such as Urolithin A and GlyNAC are best framed on month-scale timelines, so the right expectation is cumulative daily infrastructure.
Every ingredient in LONGER+ is listed on the Supplement Facts panel.
LONGER+ is manufactured in the USA in an FDA-registered, cGMP-compliant facility, and every batch is tested for microbial safety. K2Go® is a registered trademark of Natraland USA, Inc. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A longevity formula designed to support healthy aging and cellular function.
Ships mid-late September
Cellular renewal and physical performance, covered together. Stack both for comprehensive coverage.
Ships mid-late September
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