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Muscle Code Amino Powder

Muscle Code Amino Powder

Developed by world-renowned amino acid scientist Dr. Robert Wolfe, Muscle Code delivers clinically proven essential amino acids for optimal muscle growth and recovery. Originally funded to protect astronauts' muscles in zero gravity, this breakthrough formula is now available in both powder and capsule form to support your fitness journey.

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Multiple containers of Muscle Code Advanced Aminos on a white background

NASA-Researched Essential Aminos

Key Features & Benefits

  • Rapid Recovery
  • Builds & Preserves Muscle
  • Clinically Proven
  • Clean Zero-Sugar Amino Acid
Description Science Ingredients FAQ

Capsules

Clinically proven to fuel muscle growth, recovery, and performance — in just 3.6g per serving

  • NASA-Researched Formula - Developed by Dr. Robert Wolfe, world leader in amino acid science, based on research originally funded to protect astronauts' muscles in space.
  • More Effective Than Whey Protein - Clinically shown to match the muscle-building effects of 15g whey protein with only
 3.6g of essential amino acids.
  • Rapid Muscle Recovery & Strength - Promotes lean muscle growth, reduces soreness, and supports peak training performance.
  • Tasteless, odorless, easy to swallow vegan capsules.
  • Made in USA & Third-Party Tested - Produced in GMP-certified facilities to ensure purity, potency, and safety.
Made with the best

The Science of Muscle Code & How it’s Made

What you can find in Muscle Code

  • Clinically Proven Amino Acids
  • Vegan & Clean Formula
  • Zero Sugar & No Artificial Flavors
  • Electrolytes & Enzymes
  • Researched & Developed Backed by amino acid science
  • Made in a GMP-Certified Facility
  • Gluten Free, Dairy Free, Soy Free, Nut Free, Shellfish Free
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Trusted by the best

Backed by Our Advisory Board

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Dr. Smith Johnston

Dr. Smith Johnston is a leading expert in space medicine with more than 25 years as a NASA Flight Surgeon, where he cared for astronauts, supported over 25 Space Shuttle missions, and led medical systems for the ISS. As Medical Director at Johnson Space Center, he oversaw astronaut medical standards, fatigue management, and human performance programs. He now serves as Chief Medical Officer at Axiom Space, guiding crew health and readiness for private astronaut missions. Board-certified in Aerospace Medicine, he also teaches at the University of Texas Medical Branch and advises Timeshifter. His work has been widely recognized in media outlets including NOVA, Scientific American, and The New York Times.

Aerospace Medicine Specialist
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Dr. Robert Wolfe

Dr. Robert Wolfe, a leading researcher in muscle metabolism, has spent decades uncovering the power of amino acids in human health. With a career rooted in clinical research and physiology, he became particularly intrigued by how the body repairs and builds muscle—especially in aging populations and athletes.His research led to a groundbreaking discovery: essential amino acids (EAAs) play a far more critical role than previously thought. Unlike complete proteins, EAAs could stimulate muscle protein synthesis rapidly, even without exercise. This had profound implications—not just for body builders, but for older adults losing muscle mass, patients recovering from surgery, and anyone looking to improve recovery and performance.

The Amino Acid Pioneer: Dr. Robert Wolf
Science Backed Ingredients

Key Ingredients

EAAlpha® Reginator Essential Amino Acids Powder Premix (3600 mg)

  • L-Leucine
  • L-Lysine HCl
  • L-Valine
  • L-Isoleucine
  • L-Arginine
  • L-Threonine
  • L-Phenylalanine
  • L-Methionine
  • L-Histidine
  • L-Tryptophan

Other Ingredients

  • Malic Acid
  • Pyure Organic Stevia (Rebaudioside A)
  • Red Beet Juice Powder
  • Natural Flavor
  • Silicon Dioxide

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What is Muscle Code?

Muscle Code by Nautilus is a patented, clinically proven essential amino acid (EAA) supplement formulated in the precise ratio your body needs to maximize protein synthesis.

What makes Muscle Code different from other protein or amino acid supplements?

Unlike generic amino blends or incomplete proteins, Muscle Code contains EAAs in the exact balance required for effective muscle protein synthesis. This ensures nothing is wasted, giving you better results with less effort.

How does Muscle Code work to build muscle and aid recovery?

Leucine triggers muscle protein synthesis, while the other EAAs provide the raw material for new muscle tissue. Together, they repair muscle damage and accelerate recovery.

Who should take Muscle Code?

· Athletes & fitness enthusiasts to maximize training gains

· Aging adults to maintain lean muscle and strength

· Post-surgery or illness recovery to prevent muscle loss

· Anyone looking to support muscle health, recovery, or total-body protein needs