Arnold's Stack
30 Servings $/Serving
Delivers the fundamentals Arnold takes daily for strength, muscle, and longevity.
- Promotes strength, muscle, and recovery
- Supports bone and immune health
- Science-led and NSF Certified for Sport®
Frequently Purchased Together
Arnold’s daily fundamentals. No shortcuts.
This stack brings together the three essentials Arnold Schwarzenegger relies on every day—grass-fed whey protein, creatine monohydrate, and vitamin D3—to support strength, muscle, and Performance for Life™.
Arnold’s Stack is built around the fundamentals Arnold Schwarzenegger has relied on for decades—supporting strength, muscle, and long-term performance through consistent daily use. Each product plays a distinct role, working together to support the body from training through recovery for lifelong health.
- Strength, power, and performance: Creatine monohydrate supports ATP production to help sustain strength, power output, and endurance during training, while also supporting brain energy and cognitive performance.
- Lean muscle and recovery: Fast-absorbing, grass-fed whey protein isolate delivers essential amino acids to support muscle maintenance, repair, and recovery, with ProHydrolase® enzymes for easy digestion.
- Bone, muscle, and immune health: Vitamin D3 2000 IU supports calcium absorption, bone density, muscular function, and immune defenses—key for long-term resilience and performance.
- Built for consistency: NSF Certified for Sport®, rigorously tested, and made without fillers or artificial additives, Arnold’s Stack is designed to be taken daily—no trends, no shortcuts, just what works.
Arnold’s Stack works by addressing the foundational systems that support performance and long-term health: muscle protein synthesis, cellular energy production, and musculoskeletal integrity. Each component is selected for its role in sustaining strength, recovery, and resilience through consistent daily use.
Whey Protein Isolate provides rapidly absorbed, complete amino acids—especially leucine—to support muscle maintenance, repair, and adaptation to training. Creatine Monohydrate increases intramuscular phosphocreatine stores, supporting ATP regeneration during high-intensity effort and contributing to both muscular power and cognitive energy. Vitamin D3 (2000 IU) supports calcium and phosphorus absorption, muscle function, immune signaling, and inflammatory balance, helping preserve bone density and muscular performance over time.
Together, these fundamentals support the body’s ability to train, recover, and adapt—forming a simple, science-led daily routine.
Begin with 1 scoop or 1 capsule of each product. You can adjust intake over time based on your body composition, training volume, and desired results.
- Creatine: Take 1 scoop (5g) once daily. Mix with water or add to your protein shake and drink promptly.
- Whey Protein: Take 1 scoop daily, post-workout or anytime you need protein support. Increase or decrease servings based on your protein needs and training demands.
- Vitamin D3: Take 1 capsule daily, with or without food.
- Can be taken together: All three products are designed to be taken at the same time as part of a daily routine.
- Daily consistency matters: Benefits build with regular, long-term use.
Arnold’s Stack is designed to fit seamlessly into a daily routine. Many people choose to mix creatine into their whey protein post-workout or in the morning for convenience. Vitamin D3 can be taken alongside the stack or on its own at any time of day.
Pairs well with: Omega-3s for additional joint, heart, and inflammation support.
Whey Protein:
Chocolate: grass-fed whey protein isolate, ProHydrolase®, natural flavors, cocoa, salt, monk fruit extract, stevia
Vanilla: grass-fed whey protein isolate, ProHydrolase®, natural flavors, salt, monk fruit extract, stevia
Unflavored: grass-fed whey protein isolate, ProHydrolase®
Strawberry: grass-fed whey protein isolate, ProHydrolase®, natural strawberry flavor, Reb M*, beet root/carrot juice powder (for color)
ProHydrolase® is a clinically researched enzyme that enhances protein breakdown and amino acid uptake.
*Reb M is a natural, plant-based sweetener with zero glycemic response or aftertaste. Our Reb M is made from fermated sources and is 250× sweeter than sugar without bloating, 2.5× sweeter than monk fruit, and made sustainably with less land, water, and crop rotation.
Creatine: Creapure® Creatine Monohydrate
Momentous Creatine is sourced from the purest form of creatine monohydrate available with no additives, sweeteners, or other ingredients.
Vitamin D3 2000IU: 50mcg (2000 IU) (as plant-based cholecalciferol)
Other Ingredients:
- Organic Extra Virgin Olive Oil, Hypromellose (Capsule), Candelilla Wax
We include a high-quality fat source (organic extra virgin olive oil) in this product to aid in Vitamin D absorption even if taken without a meal or other fat source.
When to use:
Use Arnold’s Stack daily, whether you train that day or not. Consistency is key.
Onset time:
- Whey Protein: Begins supporting muscle repair immediately after use.
- Creatine: Cellular saturation typically occurs within 2–4 weeks of daily use.
- Vitamin D3: Blood levels build gradually, with measurable changes in 4–8 weeks.
Expected results:
With consistent use, you can expect support for strength, muscle recovery, and daily performance in the short term, with improvements in muscular resilience, bone health, and overall vitality developing over time. Long-term benefits are driven by daily adherence—not quick fixes.
There are 15 credible reviews and studies related to this product:
Whey Protein Isolate:
Creatine:
10. Effect of creatine supplementation on body composition and performance: a meta-analysis
Vitamin D3:
11. Vitamin D3 Supplementation and Stress Fractures in High-Risk Collegiate Athletes – A Pilot Study
12. Sunlight and vitamin D for bone health and prevention of autoimmune diseases, cancers, and cardiovascular disease
- 20g of clean protein per serving
- Limited-run flavors. No artificial sweetners
- NSF Certified for Sport®
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- 20g of protein in travel-ready packets
- Supports daily protein intake
- NSF Certified for Sport®
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- 1g of clinically proven creatine per chew
- Enhances cognitive function & ATP production
- Supports lean muscle growth, endurance, and recovery
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- 5g of pure creatine monohydrate in travel-ready sachets
- Supports strength, power output, and recovery without fillers
- Helps boost brain energy and cognitive clarity
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- 6 clinically-studied ingredients that work together
- Targets core cell functions - beyond just NAD⁺
- Promotes brain function + DNA integrity
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Frequently Asked Questions
Yes. Arnold’s Stack reflects the core supplements Arnold Schwarzenegger uses daily—protein, creatine, and vitamin D3—because they address the fundamentals of strength, muscle, and long-term performance.
Arnold’s Stack is designed for anyone focused on strength, muscle, and longevity—from serious athletes to everyday individuals of any age who want a simple, proven daily routine without trends or hype.
Yes. Consistent daily use is important. Creatine and vitamin D3 work by building and maintaining levels in the body over time, not just on training days.
Momentous Whey Protein Isolate is sourced from grass-fed, pasture-raised cows on European dairy farms that meet rigorous standards for animal welfare and product quality, including being free from hormones, steroids, and rBST.
The whey is cold-processed and micro-filtered to preserve its full amino acid profile while minimizing sugar, fat, and lactose. It’s also enhanced with ProHydrolase®, a clinically studied enzyme that improves digestion and amino acid absorption, helping reduce GI discomfort and maximize protein uptake.
Not necessarily. The idea that Vitamin D3 must always be paired with Vitamin K2 to “move calcium into the bones” is a common myth, not a medical requirement. Most healthy people already get enough Vitamin K through diet-leafy greens supply K1, and foods like eggs, dairy, and fermented dishes provide K2. Your body can also convert some K1 into K2 as needed.
Clinical research shows that Vitamin D alone does not cause calcium to build up in arteries, and routine Vitamin K supplementation isn’t necessary unless you have a known deficiency.
At Momentous, our Vitamin D3 is formulated for optimal absorption and real-world effectiveness. Delivering what your body needs, without unnecessary additives or marketing hype.
What matters most is creatine quality, and this is where Momentous stands apart. Our creatine is made with the world’s most trusted and rigorously tested form of creatine monohydrate, produced under pharmaceutical-grade standards. It is NSF Certified for Sport®, meaning every batch is independently verified to contain exactly what’s on the label—no banned substances, no heavy metals, and no contaminants.
We also use zero fillers, flavors, or additives. Just pure, clinically-validated creatine. That purity is what makes Momentous Creatine easier to digest, more consistent in performance, and trusted by elite athletes and high-performers alike.
Some people are concerned about bloating, however creatine does not cause unwanted weight gain or bloating for most people. Any small change on the scale is typically from water being stored inside the muscle cells, not under the skin. This is actually part of how creatine supports strength, power, and recovery, and it tends to normalize with consistent use.
Yes. Each product is made to The Momentous Standard®, rigorously tested, and NSF Certified for Sport®, making the stack suitable for consistent, long-term daily use.