Arnold’s Ultimate Stack

Arnold’s Ultimate Stack:

Covering the critical systems that determine how well you train, recover, and perform. Each product in Arnold’s Ultimate Stack plays a distinct role, working together to build strength today and performance for life.

• Strength, power & cognitive output
  Creatine Monohydrate helps regenerate ATP—the body’s primary energy source—to increase strength, power output, training capacity, and brain performance.
• Lean muscle growth & recovery
  Grass-fed Whey Protein Isolate delivers essential amino acids for muscle repair and maintenance, with ProHydrolase® enzymes to support digestion and absorption.
• Bone density, muscle function & immune health
  Vitamin D3 (2000 IU) enhances calcium absorption and supports skeletal strength, neuromuscular function, and immune resilience.
• Full-spectrum gut support
  Fiber+ combines soluble fiber, insoluble fiber, and prebiotic resistant starch to nourish beneficial bacteria, strengthen the gut barrier, and support metabolic stability.
  
  

Built to The Momentous Standard®
NSF Certified for Sport®, rigorously tested, and formulated without artificial flavors or unnecessary additives—designed for daily, long-term use.

Arnold’s Ultimate Stack works by strengthening the core systems that determine performance: muscle repair, cellular energy production, bone integrity, immune resilience, and gut health. Each ingredient plays a defined role—and together they create a compounding effect.

Here’s how it works:

Whey Protein Isolate delivers rapidly absorbed essential amino acids, including leucine, to directly stimulate muscle protein synthesis and accelerate repair after training.

Creatine Monohydrate increases phosphocreatine stores inside muscle cells, allowing faster ATP regeneration—the energy source for strength, power output, and high-intensity performance. Creatine also supports cognitive energy and mental clarity.

Vitamin D3 (2000 IU) enhances calcium absorption and neuromuscular signaling, supporting bone density, muscular contraction efficiency, immune regulation, and long-term resilience.

Fiber+ provides soluble fiber, insoluble fiber, and prebiotic resistant starch to nourish beneficial gut bacteria, improve digestive efficiency, and support nutrient absorption, metabolic balance, and steady energy.

Together, these systems don’t just “support” performance—they optimize the body’s ability to train hard, recover efficiently, and adapt over time.

Arnold’s Ultimate Stack is designed to be simple, efficient, and sustainable. Take each product once daily and adjust based on body composition, training load, and protein intake.

Momentous Creatine Monohydrate (5g daily)
Supports strength, power output, and brain performance.

• Start with 1 scoop once per day
• Mix with water or add to your protein shake
• Drink shortly after mixing (best within 30 minutes)

Whey Protein Isolate (1 scoop daily)
Delivers essential amino acids for muscle repair and growth.

• Take post-workout or anytime you need protein support
• Increase servings to meet your daily protein target

Vitamin D3 (2000 IU daily)
Supports bone density, muscle function, and immune health.

• Take 1 capsule daily;no food required
• Formulated with extra virgin olive oil (EVOO) to support absorption health.

Fiber+ (2 scoops daily)
Supports digestion, microbiome diversity, and metabolic stability.

• Mix with 12–16 oz of liquid
• Drink shortly after mixing (Fiber+ thickens the longer it sits)
• Can be added to your protein shake
  
  

How to Combine

• All products can be taken together
• Many mix Creatine + Fiber+ into their Whey for convenience
• Vitamin D3 can be taken alongside or separately
  
  

Consistency matters. Results build with daily, long-term use.

Pairs well with: Omega-3 for joint, heart, and inflammation support.

Whey Protein:

Chocolate: Grass-fed whey protein isolate, ProHydrolase®

Other Ingredients: Natural Flavors, Cocoa, Salt, Monk Fruit Extract, Stevia, Contains Milk

Vanilla: Grass-fed whey protein isolate, ProHydrolase®

Other Ingredients: Natural Flavors, Salt, Monk Fruit Extract, Stevia, Contains Milk

Unflavored: Grass-fed whey protein isolate, ProHydrolase®

Other Ingredients: Contains Milk

Strawberry: Grass-fed whey protein isolate, ProHydrolase®

Other Ingredients: Natural Strawberry Flavor, Reb M*, Beet Root/Carrot Juice Powder (For Color), Contains Milk

ProHydrolase® is a clinically researched enzyme that enhances protein breakdown and amino acid uptake.

Creatine: Creatine Monohydrate (Momentous)

Momentous Creatine is sourced from the purest form of creatine monohydrate ever. No additives, sweeteners, or other ingredients.

Vitamin D3 2000IU:

Vitamin D3 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. 

Fiber+:

Pure Cinnamon: Psyllium Husk, Resistant Potato Starch (Solnul®), Rice Bran Hull

Other Ingredients: Cinnamon Bark Powder, Sunflower Lecithin, Reb M*


Fiber+ combines three active ingredients to support complete digestive health:

Psyllium Husk: a primarily soluble fiber that supports gut regularity.

Rice Bran: an insoluble fiber that promotes consistent digestion.

Resistant Potato Starch: a prebiotic starch that fuels beneficial gut bacteria and promotes short-chain fatty acid (SCFA) production for gut barrier support.

*Reb M is a natural, plant-based sweetener with zero glycemic response or aftertaste. Our Reb M is made from fermented rice and is 250× sweeter than sugar without bloating, 2.5× sweeter than monk fruit, and made sustainably with less land, water, and crop rotation.

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.
• Fiber+: You may notice easier, more regular stools within 12–48 hours, with fuller microbiome and metabolic benefits building over 1–4 weeks of steady use.
  
  

Expected results:

With consistent use, you can expect support for strength, muscle recovery, gut health, 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.