Arnold’s Essential Stack

Arnold’s Essential Stack focuses on two of the most overlooked yet impactful performance drivers: muscle energy and gut health. Simple, foundational, and designed for daily consistency.

• Increase strength & training capacity
  Creatine Monohydrate supports ATP production to improve strength, power output, muscular endurance, and cognitive performance.
• Close your fiber gap
  95% of Americans fall short on fiber intake. Fiber+ delivers soluble fiber, insoluble fiber, and prebiotic resistant starch to support digestion and microbiome diversity.
• Improve energy stability & recovery
  A healthy gut supports nutrient absorption, metabolic balance, and steady energy—helping your training and nutrition work more effectively.

Two clinically supported essentials, NSF Certified for Sport®, and formulated without fillers or artificial additives.

Arnold’s Essential Stack targets two of the most impactful yet commonly overlooked performance drivers: cellular energy and gut health. The result is a streamlined foundation that improves how your body produces power and uses nutrients.

Here’s how it works:

Creatine Monohydrate elevates intramuscular phosphocreatine levels, increasing ATP regeneration for greater strength, power output, muscular endurance, and cognitive performance.

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.

When muscle energy production and gut function improve, training capacity, recovery, and long-term performance improve with them.

Arnold’s Essential Stack focuses on two high-impact fundamentals taken once daily.

Momentous Creatine Monohydrate (5g daily)

Supports strength, power output, and cognitive performance.*

• Take 1 scoop per day
• Mix with water or your preferred beverage
• Drink shortly after mixing
  
  

Fiber+ (1–2 scoops daily)

Supports digestion, gut health, and steady energy.*

• Mix with 12–16 oz of liquid
• Drink shortly after mixing (Fiber+ thickens the longer it sits)
• Can be taken with Creatine or separately
  
  

How to Combine

Daily consistency drives results. Benefits build over weeks of use.

• Both can be taken at the same time
• Many mix them together in the morning or post-workout

Creatine: Creatine Monohydrate (Momentous)

Momentous Creatine is sourced from the purest form of creatine monohydrate available with no additives, sweeteners, or other ingredients.

Fiber+:

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

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

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

Other Ingredients: Sunflower Lecithin

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 grown sustainably with less land, water, and crop rotation.

When to use:
Use Arnold’s Essentials Stack daily, whether you train that day or not. Consistency is key.

Onset time:

• Creatine: Cellular saturation typically occurs within 2–4 weeks of daily use.
• 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 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.