Dr. Jonathann Kuo, MD
Extension Health | CEO
Dr. Kuo advises on clinical safety, protocol design, and evidence-backed health optimization.
No. 1 Best Seller
STRONGER+ & LONGER+
LEMONADE FLAVOR
STRONGER + LONGER is the complete daily stack — pairing peak physical performance with long-term cellular health in a single routine.
Ships within 1–2 business days
- One daily routine, two complete systems — STRONGER for performance, LONGER for longevity, replacing a shelf of separate products.
- STRONGER: 5g creatine monohydrate + 8g pure L-Citrulline, with PeakATP®, EAAs, beta-alanine, and electrolytes for strength, power, and blood flow.
- LONGER: 1g Urolithin A + 300mg NMN + 3.6g GlyNAC, plus senolytic and autophagy cofactors for mitophagy, NAD+, and cellular energy.
- Personal Best Guarantee: 30 days on Longer+, 90 days on Stronger+
¥22,908
¥41,700
SAVE ¥18,792
First Order Discount
Auto-refills every 30 days at ¥35,597/month. Skip, pause, or cancel anytime.
Two-Product Stack
One scoop of each daily
One scoop of each daily
Personal Best Guarantee
30 days Longer+, 90 days Stronger+
30 days Longer+, 90 days Stronger+
Third-Party Tested
Transparent standard
Transparent standard
The short time I have been using Stronger and Longer 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.
The team behind this product
Advisory Team
World-class clinicians and scientists ensuring safety, efficacy, and scientific rigor at every step.
Featured on huberman lab
Dr. Abud Bakri, MD
Health Optimization Expert
Dr. Bakri brings expertise in hormone health, telehealth, and practical optimization protocols.
Dr. Paulina & Elena Rueda
Dama Health | Co-Founders
Paulina and Elena advise on science-backed women's health education, care standards, and patient-centered experience.
The athletes who chase personal bests for a living
TRUSTED BY WORLD-CLASS ATHLETES
ENHANCED GAMES ATHLETESCompeting under full scientific transparency, no hidden protocols
Cody Miller
US Olympic Medalist, Swimming
Fred Kerley
US Olympic Sprinter
Isabella Arcila
Pro Swimmer
COMPLETE DAILY SYNERGY.
Zero fillers. Zero proprietary blends. The LONGER+ and STRONGER+ stack combines clinical doses of premium, evidence-backed ingredients to optimize your body from the cellular level to peak physical performance.
STRONGER+ — Pre-Training
5g
Creatine monohydrate
A studied daily dose used to support strength, muscle performance, and cognitive function.
8g
Pure L-Citrulline
Pure L-Citrulline, not citrulline malate, to support nitric oxide production and blood flow.
400mg
PeakATP®
Patented ATP technology included to support cellular energy, blood flow, and performance signaling.
5g
EAAs + hydration stack
Essential amino acids plus sodium, potassium, and magnesium to support recovery and hydration.
LONGER+ — Morning Routine
1g
Urolithin A
Supports mitophagy, the cellular cleanup process that helps clear damaged mitochondria and support mitochondrial quality.
300mg
NMN
A direct NAD+ precursor included to support NAD+ levels, cellular energy metabolism, and DNA repair pathways.
3.6g
GlyNAC
Glycine plus NAC precursors included to support glutathione production and antioxidant defense.
Daily stack
Senolytics + autophagy
Quercetin, spermidine, CoQ10, D3, K2Go®, and core micronutrients in one daily scoop.
How the formula supports daily performance.
Stronger+
Start with the inputs that matter.
Creatine, amino acids, electrolytes, and PeakATP® support the foundation for energy, hydration, recovery, and strength without relying on caffeine.
1 scoop
Daily routine
20 servings
Per pouch
0mg
Caffeine
Clinically shown
+5–15%
increase in brain creatine levels vs placebo*
Brain creatine levels
vs placebo
With 5g Creatine
+5–15%
Without Creatine
Baseline
1,000+ studies, multiple meta-analyses
Longer+
Longevity support in one scoop.
LONGER+ is built to simplify a serious longevity stack: Urolithin A, NMN, GlyNAC, senolytic support, autophagy support, mitochondrial cofactors, and micronutrients in one transparent daily formula.
1 scoop
Daily protocol
30 servings
Daily formula
6–8 bottles
consolidated
Clinically shown
+12%
Improvement in muscle endurance vs placebo.
*MITOPURE clinical trial, 4 months
Stronger+
Pure citrulline supports nitric oxide pathways.
STRONGER+ uses 8g pure L-Citrulline to support nitric oxide production and blood flow, paired with creatine, PeakATP®, BCAAs, and electrolytes for broader daily performance support.
5g
Creatine
8g
Pure L-Citrulline
3.2g
Beta-Alanine
400mg
PeakATP®
Clinically shown
+2–4 lbs
More lean muscle mass vs. training alone over 8–12 weeks.
Longer+
Five evidence-backed pathways in one formula.
LONGER+ is designed to support mitophagy, NAD+ restoration, antioxidant defense, senescent-cell clearance, autophagy, mitochondrial biogenesis, and foundational micronutrient coverage.
1g
Urolithin A
300mg
NMN
3.6g
GlyNAC stack
2mg
Spermidine
Improved physical performance in older adults*
Hand Grip Strength
Improved
6-Min Walk Distance
Improved
*2022 JAMA Network Open study in older adults
Trust standard
No proprietary blends. No guessing.
The panel is the proof point. Every ingredient and dose is disclosed, with third-party testing for label accuracy and banned substance compliance.
0
Proprietary blends
Every dose
Fully disclosed
3rd-party
tested
Doctor
formulated
Stronger+
~15%
Increase in strength and power output.
Longer+
~17–42%
Improvement in mitochondrial function biomarkers.
A cleaner alternative to loud, incomplete formulas.
Many supplement labels are built around hype, stimulants, or hidden blends. STRONGER+ is designed as a transparent daily routine upgrade.
Evaluation point
Enhanced Bundle
Typical Stack
0mg caffeine, no stimulant dependency
Yes
Often stimulant-led
5g creatine monohydrate
Yes
Often underdosed / separate bottle
8g pure L-Citrulline
Yes
Often underdosed / separate bottle
400mg PeakATP®
Yes
Often underdosed / —
BCAAs + hydration support
Yes
Separate bottle
1g Urolithin A
Yes
Separate bottle / rarely
300mg NMN (NAD+ support)
Yes
Separate bottle / rarely
3.6g GlyNAC (antioxidant stack)
Yes
Separate bottle / —
Fisetin + quercetin (senolytic support)
Yes
—
Spermidine (autophagy support)
Yes
Separate bottle / rarely
D3 + K2Go® micronutrient foundation
Yes
Separate bottle / rarely
Third-party tested
Yes
Varies
No proprietary blends or hidden actives
Yes
Often hidden / varies
One daily routine (2 scoops, both products)
Yes
Rarely — usually many bottles
Third-party tested
Clinically dosed
Doctor-formulated
No proprietary blends
Stimulant-free
5g creatine
8g pure L-Citrulline
400mg PeakATP®
5g EAAs
Full hydration
Third-party tested
Clinically dosed
Doctor-formulated
No proprietary blends
Stimulant-free
5g creatine
8g pure L-Citrulline
400mg PeakATP®
5g EAAs
Full hydration
what our customers are saying
"Stronger has Magnesium, Vitamin C, Sodium, potassium and collagen, everything to help you get stronger and faster. Be like me."
Fred Kerley Verified
“As an elite athlete, I’ve found Enhanced to be the ultimate post-workout supplement for my rigorous training regimen.”
While the creatine component is highly beneficial, the comprehensive advantages of Stronger Enhanced truly make it the all-in-one solution every top-tier athlete requires.
Maxwell Kreutzelman
Verified customer
"I train because I want to compete, I want to win and be the best. That’s why I choose Stronger because it was built for people and athletes that want to be on the podium. Let’s get stronger."
Isabella Arcila Verified
“Stronger has made a noticeable difference in my better recovery”
The shorter recovery time I have between sets has definitely felt a difference in my overall training output.
Ranier Simons
Verified customer
“Steady support without the edge”
I started using this supplement a few weeks ago and the difference in my energy, endurance, and overall sports performance has been incredible . I feel more focused, powerful, and ready to push harder every workout. Highly recommend it to anyone serious about taking their performance to the next level!
Christopher Reiff
Verified
"I love the Enhanced Products, LONGER+ and STRONGER+. I use them in combination for the synergistic effects and have seen a noticeable difference in energy, focus, clarity and strength during my workouts and throughout the day. I also notice gains in size and I've only been using them for a couple months now. Fantastic Stuff!"
Terry S.
Verified
"The benefits I’ve noticed, I wake up with more energy that lasts me the WHOLE day it’s amazing, my workouts actually feel strong and developed, when I drink water I can I’m actually getting hydrated rather than the water just passing right through me, overall compared to every other supplement I’ve taken, this one is by far the best and most effective!"
Davin Lane
Verified
"Stronger is creatine that helps with muscle growth and recovery. I’ve felt the difference in my training, and it’s become part of my everyday routine."
Kristian Gkolomeev
Verified
"Stronger is one of the most tested supplements on the market. It helps with recovery and explosiveness. I use it every single day."
Shane Ryan
Verified
STRONGER+ & LONGER+ BUNDLE
Built for output today. Engineered to last.
This bundle runs two systems on one protocol: a daily performance formula and a daily cellular-maintenance formula. Not a stimulant spike, not instant stimulation — a 90-day performance window layered on top of a longer cellular timeline. Individual results vary.
Start today
-
Day 1Start
Your protocol is set. One input. Zero stimulants.
18 clinically dosed performance ingredients, 1,000mg Urolithin A, no caffeine dependency, full ingredient transparency.
1 scoop daily -
Week 1Early signal
Training sessions start and finish cleaner. Cellular repair is already running underneath.
Reduced mid-session fatigue, improved hydration, no afternoon crash.
7 days in -
Day 30Build phase
Strength up. Recovery faster. The longevity routine starts working as a habit.
Creatine saturation, 8g L-Citrulline, one scoop replacing 6–8 longevity bottles, less soreness.
30 days in -
Day 90Evaluate
Personal bests tracked. Long-game defense online. Results you can measure, on two timelines at once.
Documented strength/power gains, 800mg GlyNAC, 90-day money-back guarantee.
90-day money-back guarantee -
Day 120Mitophagy Support
Strength gains are now backed by repair, not just fuel. Urolithin A works on cellular timelines.
1g Urolithin A dose supporting mitochondrial quality over months.
1g Urolithin A -
DailyMaintain
The routine stays simple. The results compound.
Flexible refills, adjust, pause, or cancel anytime.
Daily use
FAQ
Common questions, clear answers.
Answers for health-conscious buyers evaluating ingredients, caffeine, daily use, refills, and the purpose of the formula.
The STRONGER+ & LONGER+ Bundle is a daily routine: STRONGER+ for training performance and LONGER+ for cellular maintenance. STRONGER+ is built around a clinically-studied creatine dose plus performance ingredients to support strength, power output, and recovery. LONGER+ combines NMN, Urolithin A, Spermidine, and supporting ingredients to support mitochondrial function and healthy aging.
STRONGER+ is built around disclosed active doses including 5g creatine monohydrate, 8g pure L-Citrulline, 400mg PeakATP®, EAAs, and electrolytes. LONGER+ includes NMN (Nicotinamide Mononucleotide), Urolithin A (Mitopure®), Spermidine, and supporting cofactors. Full Supplement Facts panels are above.
Take STRONGER+ 45–60 minutes before training: mix one scoop with 8–10 oz of water or your preferred beverage. Take LONGER+ daily in the morning with food: mix one scoop with water or your beverage of choice.
Yes. STRONGER+ and LONGER+ are designed to be stacked. Take STRONGER+ pre-training and LONGER+ in the morning with food.
Subscribe and your next order ships automatically on the schedule you choose. Edit, skip, or cancel anytime in your account.
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.
Creatine saturation typically takes three to four weeks of consistent daily use, based on published research. Effects like steadier energy, sharper focus, and pumps build with consistent daily use. LONGER+ is not a stimulant and is designed to support cellular maintenance over time. Individual results may vary.
STRONGER+ is well-tolerated. Some users notice a mild tingling sensation (paresthesia) from Beta-Alanine - a well-documented, temporary sensation that fades within 30–60 minutes.
Yes. STRONGER+ contains 0mg caffeine and is built for daily performance support without a stimulant spike.
Yes. The formula is built around disclosed active doses, including 5g creatine monohydrate, 8g pure L-Citrulline, 400mg PeakATP®, EAAs, and electrolytes. LONGER+ uses full label transparency: every ingredient, every dose, and no proprietary blends.
STRONGER+ avoids proprietary blends and caffeine dependency. It focuses on transparent daily support for strength, blood flow, hydration, recovery, and energy systems.
No. The micronutrients are the foundation, not the whole formula. The premium is in what surrounds them: 1g Urolithin A, 300mg NMN, 3.6g GlyNAC, fisetin, quercetin, spermidine, mitochondrial cofactors, and full label transparency.
Several ingredients in LONGER+ are fat-soluble. Taking with a meal supports absorption.
Every ingredient is listed on the Supplement Facts panel above.
Yes. LONGER+ is third-party tested for label accuracy and banned substance compliance. 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.