Pump Formula by Mike O’Hearn Review – Is Natty Juice Good?

Written by James C., M.S.(C), PT

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Mike O’Hearn is a renowned figure in the fitness industry, boasting a prolific career as a bodybuilder, actor, and influencer.

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His passion for physical health and strength is not just demonstrated in his personal achievements but also through his commitment to helping others achieve their fitness goals.

This commitment led to the creation of the Titan Series, a line of fitness supplements designed to optimize performance and recovery.

mike o hearn natty juice pump formula

O’Hearn’s expertise and dedication to providing high-quality, effective products are evidently reflected in his Pump Formula, which is part of the acclaimed Titan Series.

The Titan Series is a testament to Mike O’Hearn’s dedication to fostering optimal physical performance and recovery.

This line of fitness supplements is meticulously formulated to reflect Mike’s own approach to health and wellness, bringing together cutting-edge science and premium ingredients.

The standout product within this range is the Pump Formula, a stim-free pre-workout supplement meticulously designed to enhance workout performance and muscle pump.

It encapsulates the ethos of the Titan Series: driving maximum results in fitness and bodybuilding, with each serving precisely measured to offer a potent blend of quality nutrients.

It’s no wonder that the Titan Series, and more specifically the Pump Formula, have become a top choice for athletes, bodybuilders, and fitness enthusiasts seeking that extra edge in their physical pursuits.

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Analysis of Pump Formula Ingredients

L-Citrulline Malate 1:1 – 3 grams

pump formula citrulline malate

L-Citrulline Malate, a key ingredient in the Pump Formula, is a compound that has been scientifically proven to aid in muscle endurance, alleviate muscle soreness, and increase nitric oxide (NO) production.

NO is instrumental in dilating blood vessels, thereby increasing blood flow and nutrient delivery to the muscles during workouts, resulting in an enhanced pump.

At a dosage of 3 grams per serving, some may argue that the Pump Formula falls slightly short of the recommended 6-8 grams required for optimal performance benefits based on certain research studies.

However, it’s important to note that L-Citrulline Malate’s effectiveness is not solely dependent on the dosage.

Factors such as individual body composition, tolerance, and the synergistic effect of other ingredients in the supplement can all influence its impact.

Moreover, the Pump Formula is designed as a stim-free pre-workout supplement, which implies a balanced formulation that prioritizes sustained release and avoids overstimulation.

The 3 grams serving of L-Citrulline Malate is, therefore, a deliberate choice by Mike O’Hearn, reflecting his commitment to creating effective, safe, and balanced supplements.

Glycerol Monostearate – 2 grams

glycerol in pump formula

Glycerol Monostearate is another key ingredient found in the Pump Formula.

This compound is known for its impressive ability to improve hydration and endurance, thereby enhancing both workout performance and recovery.

It functions by drawing water into your muscles, promoting a state of hyperhydration. This increased cellular hydration not only leads to better endurance but also contributes to a more noticeable muscle pump during your workouts, a benefit that aligns perfectly with the goals of the Pump Formula.

The 2 grams per serving provided by the Pump Formula falls within the general range suggested by research, which is typically between 1 to 3 grams.

This dosage is therefore not only safe but should also be effective for most users. It’s worth noting that the effects of Glycerol Monostearate can be noticeable fairly quickly after taking the supplement, often within about an hour.

So, the Pump Formula’s serving size of Glycerol Monostearate appears to align well with its intended pre-workout use.

It’s also worth noting that Glycerol Monostearate can work synergistically with other ingredients in the supplement, such as L-Citrulline Malate.

By enhancing muscle hydration and blood flow, these ingredients together can help maximize your pump and overall workout performance.

This demonstrates the thoughtful formulation behind the Pump Formula and Mike O’Hearn’s commitment to delivering high-quality, effective supplements.

Anti-Estrogenic Blend – 1.01 grams

The proprietary Anti-Estrogenic Blend in the Pump Formula is a unique feature, a testament to Mike O’Hearn’s commitment to supporting overall health and hormone balance along with physical performance.

This blend includes Velvet Bean extract, Calcium D-Glucarate, and Diindolylmethane (DIM), components known for their potential to support healthy hormone levels, contributing to better muscle growth and recovery.

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This careful selection and combination of ingredients demonstrate the thoughtfulness and expertise that has gone into the formulation of the Pump Formula.

It’s more than just a pre-workout supplement; it’s a comprehensive tool designed to support various aspects of your physical fitness journey.

In the next section, we will delve into the taste and mixability of the two available flavors – Natty Juice and Cotton Candy.

Taste and Mixability

Natty Juice

The Natty Juice flavor of the Pump Formula offers a refreshing, fruit-based taste. It’s a blend that captures the sweetness and tanginess of natural fruit juice, offering a palatable and enjoyable pre-workout drink.

The flavor is not overly sweet or artificial, which is a common concern with many pre-workout supplements.

When it comes to mixability, the Pump Formula shines. It easily dissolves in water with a quick shake, leaving no clumps or residue at the bottom of your drink.

This enhances the overall user experience, making it a convenient option to incorporate into your pre-workout routine.

Cotton Candy

The Cotton Candy flavor, on the other hand, is a unique and delightful choice for those with a sweet tooth. It brings back the nostalgic taste of fairground cotton candy, but without the guilt of indulging in a sugary snack.

While it is sweet, it’s not overpoweringly so, striking a good balance that makes it easy to drink. Similar to the Natty Juice, the Cotton Candy flavor boasts excellent mixability.

It blends smoothly with water, offering a lump-free, enjoyable drink.

In terms of taste and mixability, both the Natty Juice and Cotton Candy flavors of the Pump Formula deliver an exceptional experience.

Mike O’Hearn’s Pump Formula, therefore, not only excels in its carefully curated ingredient profile but also provides a taste and mixing experience that matches its premium quality.

Value for Money

Considering the comprehensive formulation of the Pump Formula, the price point of $33.99 for 30 servings seems well-justified.

Each serving costs just over a dollar, a price that feels reasonable given the quality, thoughtful blend of ingredients, and positive effects on workout performance.

It’s also important to consider the added value of the Anti-Estrogenic Blend, which addresses hormonal balance, a feature often overlooked in most pre-workouts.

Moreover, the superior taste and mixability of both the Natty Juice and Cotton Candy flavors further enhance the value for money.

Therefore, the Pump Formula by Mike O’Hearn’s Titan series provides an excellent balance of cost and quality, making it a worthwhile investment for anyone seeking to optimize their workout performance and overall fitness.

Personal Experience and Effectiveness

In terms of personal experience, using the Pump Formula from Mike O’Hearn’s Titan series was truly beneficial.

From the first use, there was a noticeable increase in energy levels during workouts.

The impressive part was that this energy wasn’t the result of a sudden surge, typically found with stim-based pre-workouts, but rather a steady, sustained level of vigor and focus throughout the entire workout session.

The pump achieved while using this product was intense and lasted throughout the session, highlighting the effectiveness of the L-Citrulline Malate and Glycerol Monostearate in the formula.

Regarding the Anti-Estrogenic Blend, while the impact of such ingredients can be less immediately discernible, an overall sense of well-being and improved recovery were noticeable.

It’s worth noting that such benefits might vary among individuals and may become more evident over continuous usage.

The flavors, Natty Juice and Cotton Candy, were both enjoyable and made taking the supplement something to look forward to before workouts.

They mixed well, leaving no residue or grittiness, which significantly enhanced the overall experience.

In conclusion, the Pump Formula delivered on its promises, providing a stim-free energy boost, an impressive pump, and an overall sense of well-being, making it an effective and worthwhile addition to any fitness regimen.

It’s important to note that the Pump Formula is designed as a stimulant-free pre-workout supplement.

If you’re looking for a product that primarily boosts energy levels akin to caffeine or other stimulants, this might not be the top choice.

The Pump Formula’s main focus is enhancing muscle pumps, as its name suggests. The ingredient profile, including L-Citrulline Malate and Glycerol Monostearate, is tailored to improve blood flow, hydration, and ultimately, muscle pump during workouts.

This formula offers a more targeted approach to workout supplementation, focusing on the quality of your workout and muscular development, which should not be overshadowed by the absence of a stimulant-based energy boost.

Pros and Cons

value for money pump formula by mike o hearn

Like any supplement, the Pump Formula has its strengths and areas for potential improvement.


  1. Stim-free formulation: For individuals sensitive to caffeine or those who prefer to avoid stimulants, the Pump Formula is an excellent option. Its stim-free nature allows for a smooth and sustained energy boost, eliminating the risk of a post-workout “crash.”
  2. Thoughtful ingredient selection: The inclusion of L-Citrulline Malate and Glycerol Monostearate demonstrates a commitment to enhancing workout performance through improved blood flow and muscle hydration.
  3. Unique Anti-Estrogenic blend: This blend is a unique addition not often seen in pre-workouts, addressing hormonal balance for better muscle growth and recovery.
  4. Superior taste and mixability: Both Natty Juice and Cotton Candy flavors are delightful and mix smoothly with water, enhancing the user experience.
  5. Good value for money: Given the quality and effectiveness of the ingredients, along with the pleasurable user experience, the price point feels reasonable.


  1. Lacks caffeine: While being stim-free is a positive for some, others may miss the immediate energy boost that caffeine provides. If you are a fan of caffeine-induced energy surge, the Pump Formula may not satisfy your needs.
  2. Missing some popular pre-workout ingredients: While the Pump Formula has some great ingredients, it does miss out on a few popular ones commonly found in other pre-workouts, such as Beta-Alanine and Creatine. These compounds are known for their potential to enhance muscular endurance and strength, respectively.
  3. Proprietary blend: The use of a proprietary blend for the Anti-Estrogenic component means that the exact amounts of each ingredient aren’t disclosed. This lack of transparency may be a downside for some users.

In conclusion, the Pump Formula has several strong points, particularly for those seeking a stim-free pre-workout. However, the absence of caffeine and some other popular pre-workout ingredients might be a drawback for certain users. As always, your choice of pre-workout should align with your individual fitness goals and preferences.

Frequently Asked Questions (FAQs)

  1. Who should use the Pump Formula by Mike O’Hearn’s Titan series?
    • The Pump Formula is suitable for anyone seeking a stim-free pre-workout to enhance muscle pumps, improve blood flow, and support hormonal balance. It’s particularly beneficial for those sensitive to caffeine or prefer to avoid stimulants. Remember to always consult with a healthcare professional before starting any new supplement regimen.
    1. What flavors does the Pump Formula come in?
    • The Pump Formula is available in two flavors: Natty Juice and Cotton Candy. Both offer a pleasant taste and mix well with water.
    1. What makes the Pump Formula stand out from other pre-workout supplements?
    • What sets this formula apart is its stim-free nature and the inclusion of an Anti-Estrogenic blend. The ingredient profile is thoughtfully curated to enhance blood flow, hydration, and muscle pump during workouts without relying on stimulants.
    1. Why doesn’t the Pump Formula contain caffeine or other stimulants?
    • The Pump Formula is designed to provide a steady, sustained energy boost throughout your workout, without the risk of a post-workout crash commonly associated with stimulant-based pre-workouts.
    1. What is the serving size of Pump Formula?
    • The serving size is 7.6 grams, and each bottle contains 30 servings.
    1. Is the Pump Formula good value for money?
    • Given the quality and effectiveness of the ingredients, along with the superior taste and mixability, the Pump Formula is a good value for the price.


  1. O’Hearn, M. (n.d.). Titan series. Mike O’Hearn’s Titan Crew. Retrieved from https://www.mikeohearn.com/titan-series.
  2. National Institutes of Health. (n.d.). L-Citrulline. U.S. National Library of Medicine. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/L-Citrulline.
  3. PubChem. (n.d.). Glycerol monostearate. National Center for Biotechnology Information. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/24699.
  4. Pescatello, L. S. (2014). American College of Sports Medicine. ACSM’s Guidelines for Exercise Testing and Prescription 9th Ed. 2014. Medicine & Science in Sports & Exercise.
  5. National Center for Biotechnology Information. (n.d.). Diindolylmethane. PubChem Compound Database. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Diindolylmethane.
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