Product benefits

Decode peak performance with bio-cellular precision.

Diverse Probiotic Strains

Clinically-Proven Molecules

Urolithin A, spermidine, and SAC backed by gold-standard RCTs in strength, endurance, and mitochondrial health.

Engineered to Survive

Triple-Pathway Activation

Supports mitophagy, autophagy, and antioxidant defense the three pillars of musclespan and cellular longevity.

Feeds Good Gut Microbes

Bioavailable Performance Doses

Clinical-grade formulation delivers 1000mg Urolithin A, 6mg spermidine, and 1mg SAC at efficacious levels.

Proven in 4 Clinical Trials

Proven in Middle-Aged Adults

+12% muscle strength, improved peak VO₂, enhanced endurance, and reduced inflammatory markers vs placebo.

Unlike many muscle‑centric pseudoscience supplements, M3 is built for Musclespan the cellular capacity to produce energy, recover, and keep output high as you age.

These cellular batteries start wearing out in your 30s.

Cellular Energy

Muscle Strength

Peak Endurance

Benefits that build over time

Your cells adapt before your mirror does.​

Hour 08

Cellular Programming Begins

  • Urolithin A reaches target plasma concentrations
  • PINK1/Parkin mitophagy signaling activates
  • Skeletal muscle mitochondria prioritized for quality control
Day 07

Cleanup Pathways Online

  • Mitophagy clears damaged mitochondria
  • Autophagy eliminates protein aggregates
  • Training recovery becomes more predictable
Day 30

Mitochondrial Efficiency Shifts

  • OXPHOS protein expression increases
  • Acylcarnitine levels begin declining
  • Cellular adaptation accelerates with consistency
Day 60

Performance Thresholds Move

  • Muscle endurance improves (RCT: +20% contractions-to-fatigue)
  • Fatigue resistance increases at intensity
  • Musclespan capacity expands measurably
Day 120

System-Level Optimization

  • Inflammatory markers drop (CRP -40%)
  • Mitochondrial stress signals decline (acylcarnitines, ceramides)
  • Triple-pathway protection sustains cellular health
Day 365

Compound Longevity Returns

  • Muscle quality preservation across loading cycles
  • Performance capacity maintained decade-over-decade
  • Cellular aging rate slows at the mitochondrial level
Timeline
Capsule

How to Use:

Take 2 capsules daily, with or without food, day or night.

Day-to-day life can disrupt the balance of your muscle mitochondria, depleting your critical super defendermitochondrial quality control.

TrainingDietStressAgingToxinsPoor SleepMedicationsOverreachingSedentar
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Built on Celagenex’s Research

MP M3 emerged from mitochondrial health discoveries of Urolithin A, Spermidine, and S‑Allyl Cysteine strains that defend the muscle-span biome from aging, stress, and metabolic imbalances.

L. crispatus culture in petri dish

Patented M3 Delivery

M3 delivers patented, bioavailable actives with 95%+ cellular uptake, ensuring mitochondrial, muscle, and brain targets receive full clinical doses intact unlike standard capsules that lose 70–90% in digestion.

Urolithin A 500mg™: Clinically proven mitophagy activator; boosts endurance 41-95% in RCTs

Mitochondrial Health

Why M3 is Superior to NMN

M3 prioritizes mitochondrial quality (mitophagy biology) with human RCT signals in muscle endurance + mitochondrial biomarkers, while NMN primarily boosts blood NAD+ with mixed/limited functional signals and no meaningful body-composition change.​

Urolithin A 1000mg

Clinically-proven mitophagy activator. RCTs show improved muscle endurance, reduced inflammation, and enhanced mitochondrial health in adults 40-65.*

Urolithin A 1000mg

ACTIVATION TIMELINE

Plasma levels peak at 2-4 hours. Mitochondrial remodeling occurs over 4 months.*

Spermidine 6mg

Autophagy inducer for cellular cleanup and muscle recovery. Synergizes with Urolithin A for complete renewal.*

Spermidine 6mg

ACTIVATION TIMELINE

Absorbed in 1-2 hours. Autophagy activates within 4-6 hours. Full benefits accumulate over 8-12 weeks.*

S‑Allyl Cysteine 1mg

Nrf2 antioxidant that enhances glutathione for vascular and neural resilience under training stress.*

S‑Allyl Cysteine 1mg

ACTIVATION TIMELINE

Peak plasma at 30-60 minutes. Nrf2 activation begins within 2-4 hours.*

Clinically Validated Efficacy

Results from randomized, double-blind, placebo-controlled trials on M3 key ingredient Urolithin A:

90%

Of participants established stable mitochondrial function (reduced acylcarnitines/ceramides)

10x

Increase in mitophagy markers within 21 days use

100%

Of participants maintained optimal muscle endurance gains

How Muscalarpro™ [M3] Compares

Performance Metrics
[M3] Stack
Typical Muscle-Building SupplementTypical Longevity Stack
Clinically Studied Urolithin A Dose (1,000 mg/day)
Partial
Strength Endpoints in Human RCTs (Urolithin A Core)
Partial
Partial
Endurance/Fatigue-Resistance Endpoints in Human RCTs (Urolithin A Core)
Partial
Partial
Mobility-Type Performance Endpoint (6-min walk) in Urolithin A Research
Partial
Multi-Pathway Cellular Stack (Mitophagy + Autophagy Support)
Partial
Single Daily Capsule Protocol
Stimulant-Free Positioning
Varies
Varies

* Based on publicly available ingredient labels and published clinical literature.

Rigorous testing that sets a higher standard.

MUSCULAR PRO is screened as a full formula for identity, purity, contaminants, and performance because what’s not in your supplement matters too.​

US GMP

GMP Certified

Banned Substance Free

Banned Substance Free

Microbiological Safety

Microbiological Safety

Heavy Metals

Heavy Metals Tested

Human RCT

Human RCT

Pre-Clinically Tested

Pre-Clinically Tested

Meet MuscleCare

Science-backed guidance on mitochondrial health, strength, and longevity for athletes serious about musclespan.

Competitive Athletes + Coaches

Ask us about clinical doses, RCT evidence, performance protocols, and more.

Longevity Optimizers

Ask us anything we know navigating supplement science and training optimization is complex.

Start a Conversation

Hi, we're MuscleCare. We decode clinical trials on mitochondrial health, muscle performance, and cellular longevity. We answer science and protocol questions from our community.

Can I ask questions even if I haven't purchased M3 yet?

Absolutely that's why we're here 🔬

Better data = better decisions. Fire away!

Seed Labs landscape

MuscleLabs

Because Muscle is the super organ for longevity

Questions? We're here to help.

Musclespan is the duration of functional muscle strength and mobility across life, predicting longevity better than BMI grip strength cuts mortality 50%. M3's UA boosts endurance 41–95%, SPD autophagy for repair.[jamanetwork +3]
Yes, JAMA RCT (1000mg UA) showed mitophagy activation, reducing dysfunction markers like acylcarnitines; 90% achieved stable mito function in 21 days.[jamanetwork +1]
UA delivers ~12% strength gains and hypertrophy via mito biogenesis in RCTs; ideal for resistance training and Musclespan.[pubmed.ncbi.nlm.nih +1]
UA potentiates VO2max and fatigue resistance (+41% leg contractions); supports HRV via uncoupling for better recovery.[jamanetwork +1]
SPD delays brain aging, enhances spatial memory/deep learning via autophagy (25% lifespan extension models); SAC protects neurons.[aging-us +1]
Patented and proven on Human clinical trial double-blinded placebo-controlled with clinical doses, third-party tested (ICP-MS metals, PCR microbes, NSF banned substances), FSSAI cGMP, vegan/non-GMO.
Background

Muscle is your greatest power.