Pump Serum Review: Does It REALLY Give “Skin-Tearing Pumps”?

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Pump Serum is definitely a pre-workout option worth considering, delivering over 30 grams of performance and pump-enhancing ingredients per scoop. 

However, while it has a lot of redeeming qualities, Pump Serum may price itself outside of some users’ budgets. 

As a nutrition coach and personal trainer, I am always on the hunt for the best products for my clients, which includes a balanced approach between formula and price.

Key Takeaways

Honest Review Guarantee from FeastGood: Our testing team purchases each product 100% independently and uses the product for several weeks up to several months before writing a review. Learn more about our review process here.

Prefer to watch? Our video producer, Matteo Cantagallo, outlines the pros & cons.
  • If you take a single scoop, Pump Serum costs $1.37 per serving, which is below the average cost of pre-workout at $1.61. However, the label suggests you can take 2-scoops, which increases the cost to $2.75.
  • Pump Serum meets clinical dosing standards for ingredients ONLY when the 2-scoop serving is used.  As such, it’s apparent this product is best used if taking 2-scoops.   
  • Pump Serum claims it will deliver “skin-tearing muscle pumps”.  On this claim specifically, I did experience extreme pumps, more than any other pre-workout I’ve tested so far.   
  • Pump Serum is best for people who want increased pump and endurance but want to avoid any sources of caffeine or other stimulants.  It’s also suitable for late-night exercisers.  But realistically, it may be out of budget for some consumers. 

Overall Rating: 2.3/5

Pump Serum
Pump Serum


  • Pump Serum is designed to increase nitric oxide production, increased vascularity, and mental focus without the use of caffeine
  • Pump Serum does not contain beta-alanine, which is a common ingredient in pre-workout supplements that causes skin tingling


  • Awesome pump
  • Versatile for any time of day

Best For

  • People who want to prioritize “pump” over other performance-enhancing benefits
  • People who are sensitive to caffeine or are trying to avoid stimulants
  • People who workout late in the evening
  • People who don’t like the “tingly” feeling from certain pre-workouts
  • People with a moderate to high supplement budget

Medical Disclaimer: The material presented in this article aims to offer informational insights. It should not be perceived as medical guidance. The views and writings are not designed for diagnosing, preventing, or treating health issues. Always consult with your physician prior to starting any new dietary or supplement routine.

An Alternative If You’ve Already Decided Pump Serum Is Too Expensive

If you’ve already decided that Pump Serum is too expensive for you, then I’d suggest checking out my recent review of Transparent Labs Stim-Free Pre Workout.  

While the Transparent Labs formula doesn’t have as many “pump ingredients”, it has clinical doses of several ingredients that boost stamina, reduce muscular fatigue, and provide energy without the use of caffeine. 

If price isn’t a factor for you and you’re looking for an excellent pump product, then read my full review of Pump Serum below.

What Is Pump Serum?

Pump Serum Pre-Workout

Pump Serum is the stimulant-free workout formula by Huge Supplements. It is designed to increase nitric oxide production, increased vascularity, and mental focus without the use of caffeine. 

This formula makes it a good option for anyone who works out later in the day and wants a performance boost without negatively affecting their sleep

Pump Serum is also a good option for individuals who are sensitive to caffeine or commonly experience negative side effects from caffeine intake like jitteriness or anxiety. 

Pump Serum shows the dosage for two separate serving sizes: 1 scoop or 2 scoops. In the single scoop serving, the dose of some key ingredients like citrulline and betaine falls below clinical dosing standards. 

For this reason, I recommend using 2 scoops for optimal results, especially for experienced users. A single scoop serving may be sufficient for people who have never taken a pre-workout before. 

One positive thing that stands out with Pump Serum is that it does not have the ingredient beta-alanine, which is a common ingredient in pre-workout supplements that causes skin tingling. For anybody who has experienced that sensation and doesn’t like it, Pump Serum provides a good alternative. 

Pump Serum is available in 4 flavors: Jungle Juice, Cherry Berry, Strawberry Mojito, and Island Dream.

Claims vs Reality:  How I Felt After Taking Pump Serum? 

Pump Serum user experienced

I’ll get this experience out of the way first: 

This is the first time that I have ever had a negative experience with the texture of a pre-workout supplement. 

Every pre-workout that I have tried before (and I’ve tried a lot) has mixed up really well and drank like juice, occasionally with a small residue left over. 

Pump Serum, however, has a very gritty texture which makes it unappealing to drink. 

I also found the flavor (I tried Jungle Juice specifically) to be quite strong and sour when mixed with the recommended 12oz of water. 

I was surprised that this product’s beet flavor wasn’t more pronounced. 

When testing 4Gauge (click to read my review), which has less than ⅓ of the beet root extract that Pump Serum has, the beet flavor was incredibly strong. Pump serum has 2g of beetroot extract in a 2 scoop serving and I didn’t notice the taste at all. 

This is likely because 4Gauge does not use artificial flavoring or sweeteners in their formula, but Pump Serum does (sucralose and acesulfame potassium). It’s possible that these artificial sweeteners are better able to mask the flavors of the raw ingredients.

With taste and mixability aside, Pump Serum does exactly as advertised. 

Within my first few sets after taking the product, I could see the effects of Pump Serum, especially for my upper body days. 

Despite having ingredients to support mental focus, I didn’t find the effects very noticeable. Once I got into my workouts though and saw/felt the muscle fullness from the pump ingredients, I felt motivated to push harder so Pump Serum did help with my workout intensity, in an indirect way. 

If you want something specifically for extreme muscle pumps, consider Pump Serum. If you want something that provides a bit more of a well-rounded experience that is stimulant-free, I’d opt for Transparent Labs Stim-Free Pre instead. 

Pump Serum

Pump Serum

Pump Serum is best for people who want increased pump and endurance but want to avoid any sources of caffeine or other stimulants. It’s also good for late-night exercisers.

Pump Serum Ingredients (Per 1 scoop)

I am listing the below ingredients per single scoop serving since the product technically recommends using a 1-2 scoop serving. It will become evident as we go through them, however, that this product is meant to be double-scooped. 

IngredientDoseClinical Effective Dose
Betaine Anhydrous*1500mg2500 mgx
Beet Root Extract1000mgn/an/a
L-Tyrosine750mg100-150 mg per kg of body weightx
Agmatine Sulfate1250mg1.6-6.4g/kg of bodyweight
Pomegranate Extract500mgn/an/a
VasoDrive-AP (Casein Hydrolysate)127mgn/an/a
Huperzine10mg200 mcg
Black pepper Fruit Extract *2.5mg5-10mgx

*These ingredients meet clinical dosing standards per 2 scoop serving


Choline, which can be naturally found in high amounts in egg yolks, is a molecule that turns into acetylcholine and is commonly used for its cognitive boosting properties

For daily health, doses as low as 250-500mg daily have been studied. For short-term increases to mental focus, much higher doses (1000-2000mg) are recommended. 

In the interest of full disclosure – most studies assessing choline supplementation alone on athletic performance have had underwhelming results showing little to no benefit

On the other hand, multi-ingredient supplements containing choline, like Pump Serum, have been shown to contribute to increased strength and power.  

Pump Serum contains 205.75mg of choline per scoop, or 411.5mg per 2-scoop serving. 

While this technically meets the dosing standards for daily general health purposes, it falls shy of the doses we typically see for improving cognition. 

That being said, the fact that choline is paired with other cognitive-enhancing ingredients like tyrosine and huperzine means that the combination will likely work well enough to give you a good mental boost without the use of caffeine. 

High doses of choline may cause headaches in some users, so I recommend starting with ½ scoop of Pump Serum to assess your tolerance, and gradually increase from there. 


Citrulline is one of the most popular ingredients found in pre-workout supplements. It can also be found naturally in high concentrations of watermelon. 

Citrulline functions as a nitric oxide enhancer, meaning it increases levels of nitric oxide in the body. Nitric oxide helps the body to constrict and dilate its blood vessels which can improve blood flow to the muscles. 

Nitric oxide enhancers are also popular features since they contribute to a muscle pump or fullness, which users find aesthetically pleasing. 

Functionally, supplementing with citrulline before a workout can contribute to delayed fatigue, increased endurance, and improved recovery.

In the majority of clinical trials looking at citrulline and exercise-related outcomes, doses of 6-8g have been used. 

Pump Serum has 4g of Citrulline per scoop, which falls short of the clinical dose of 6-8g. 

It’s evident that the product is intended to be taken as a 2-scoop serving for experienced lifters, and if you take 1.5 to 2 scoops of Pump Serum, you do meet clinical dosing standards.

Betaine Anhydrous

Betaine is a compound found naturally in some plant-based foods like spinach, beets, and whole grains. 

Betaine plays a key role in creating carnitine, which is a substance that helps convert fat into energy. 

There is some, albeit minimal, evidence showing that betaine can improve muscle strength and power output. More research is needed in this area.

There is, however, more promising evidence that betaine can improve body composition by reducing fat mass and increasing lean mass. 

Betaine should be taken daily at a dose of 2.5g. As we’ve seen with the other ingredients so far, a single scoop of Pump Serum does meet clinical dosing standards with 1.5g of betaine. 

A 2-scoop serving would meet clinical dosing standards.

 Pre workout Pump Serum


Glycerol is rapidly gaining popularity in pre-workout supplements for its ability to create massive muscle pumps. 

Functionally, it can increase the total volume of water in the body and it can be used to create glucose in the body (when in a fasted state). 

Dehydration (defined as fluid loss equal to at least 2% of your body weight) can lead to decreased exercise performance. Hyperhydrating in advance can help negate the effects of dehydration. 

Since glycerol can increase total water volume, it can be a good tool to help with pre-exercise hyperhydration. 

While more definitive research is needed, the current research indicates that doses equal to 0.125g/kg of body weight are likely sufficient for day-to-day exercise. 

For a 160-pound individual, this equals approximately 9g of glycerol. Based on the available research, Pump Serum does not meet clinical dosing standards for glycerol. 

That being said, the majority of pre-workout supplements that use glycerol contain doses between 1.5g and 2g, equal to what is found in Pump Serum. 

Beet Root Extract

Beet Root Extract is exactly that – ground-up beetroot powder. Beets are naturally extremely high in nitrates. The body uses nitrates to make nitric oxide, therefore beetroot powder is a good nitric oxide booster. 

Increases in nitric oxide can lead to improvements in strength, endurance, power, and recovery.

The majority of the research on beetroot and exercise performance has used doses based on specific nitrate levels or actual beetroot juice measured out in ml, as opposed to the dried powdered form. 

As such, a clinical dose in a pre-workout is difficult to establish but at 1000mg per scoop, Pump Serum offers a massive dose of beetroot. (Other pre-workouts, like 4Gauge offer doses of around 300 mg). 

Despite the lack of clear established dosing protocols, the 1000mg of beetroot found in Pump Serum is very likely to contribute to increased workout performance, especially when paired with other nitric oxide boosting ingredients like citrulline.


Tyrosine is an amino acid that is a precursor to dopamine and norepinephrine. It shows potential for being able to boost cognitive function after just one single dose. 

When taken before exercise, tyrosine can stave off fatigue by increasing the time to exhaustion, allowing you to workout harder for longer periods of time. 

Like glycerol, tyrosine has been dosed in studies in mg/kg of bodyweight fashion. 

The optimal dosing for tyrosine is 100-150 mg per kg of body weight. This translates to between 7 and 10g of tyrosine for a 150lb individual – much more than the amount found in Pump Serum.

Another roadblock in regards to assessing how well (or not) tyrosine affects workout performance is that a lot of research looking at tyrosine has it paired with other ingredients, like caffeine and theanine

That being said, there is a lot of anecdotal support among fitness professionals in support of taking tyrosine in smaller doses for increasing work output and mental focus, but more research is needed. 


Nitrosigine® is a patented ingredient that has been specifically engineered to increase nitric oxide production in the body. (We have discussed the benefits of increased nitric oxide already in regards to citrulline and beetroot extract). 

Specifically, Nitrosigine®  is an engineered form of Arginine, which is a compound that is created from citrulline. 

The most recent research done on Nitrosigine® also shows that it improves working memory and cognitive function in adults. You can see the infographic summarizing these results here

Nitrosigine® has been clinically studied in over 30 different studies (as indicated by the company that created it, Nutrition21, though much of this research is hidden by the company to protect their product). 

The research graphs displayed on the Nutrition21 website indicate doses of 1.5g of Nitrosigine®. In order to get this clinically studied dose, you would have to take 2 scoops of Pump Serum. 

Agmatine Sulfate

Agmatine is a chemical that can be found in some bacteria and plants. It is created from arginine, discussed above in its patented form, Nitrosigine ®. 

Agmatine acts as a neurotransmitter in the brain, offering potential to increase mental focus and mood. 

Agmatine can stimulate the release of a hormone called Luteinizing Hormone, and therefore may have a positive impact on testosterone levels and muscle growth. 

Unfortunately, most of the research has been done on rats which makes it hard to properly establish dosing protocols for adult humans. 

Preliminary research estimates an adequate dose for humans is 1.6-6.4g/kg of bodyweight. For a 175lb individual, this translates to between 125 and 500mg of agmatine. 

Pump Serum far exceeds what has been used in research trials with 1250mg per serving. 

Potential side effects of agmatine supplementation include diarrhea, upset stomach, and nausea

Pomegranate Extract

Pomegranate is a fruit that is naturally high in vitamins, minerals, and antioxidants.  Like beetroot, pomegranate has a beneficial effect on blood flow when taken prior to exercise.  

The benefits of that enhanced blood flow and antioxidant content include reducing muscle 

soreness, increasing endurance, enhancing strength and supporting recovery.  

The majority of the research around pomegranate supplementation uses raw pomegranate juice, not powdered extract. As such, it can be difficult to establish whether Pump Serum uses a clinical dose. 

That being said, Pump Serum uses amounts of pomegranate extract similar to what is found in other pre-workouts, like Swolverine (500mg). 

VasoDrive-AP ® 

Like Nitrosigine ®, VasoDrive-AP ® is a patented product for improving blood flow and vascularity. 

If not evident by now, Pump Serum is full of ingredients to increase nitric oxide production to provide a significant muscle pump, as well as blood flow and oxygen delivery to the muscles. 

While the specifics of the way that VasoDrive-AP ® is scientifically formulated is a bit convoluted, the important part is that its been proven in clinical studies to

  • Support glucose utilization
  • Reduce inflammation
  • Support cognitive function
  • Improve recovery
  • Reduce muscle soreness
  • Reduce fatigue
  • Provide good intra-workout pump

Huperzine A

Huperzine is a chemical that comes from Chinese or fir club moss. 

It helps to prevent a specific enzyme from breaking down acetylcholine, which in turn increases the level and duration of the effects of acetylcholine

Since acetylcholine is a chemical messenger in the brain, increased acetylcholine levels can result in improved memory and cognitive function. 

Despite the fact that research has demonstrated that huperzine doesn’t improve exercise performance, it remains a common addition to pre-workout supplements. 

Research has used doses of 200mcg of huperzine before exercise, which is an amount substantially lower than Pump Serum provides (which is 10mg per scoop). 

Black Pepper Fruit Extract

Black Pepper Fruit Extract, also called piperine, is found in nearly every pre-workout supplement available on the market. 

It has been shown in research trials to increase nutrient absorption by up to 30%. In other words, it allows your body to absorb and utilize the other ingredients in your pre-workout. 

The typical dose of black pepper extract is between 5 and 10mg daily. 

Pump Serum offers 2.5mg of black pepper extract per scoop, half of what is recommended. With a 2-scoop serving, Pump Serum meets clinical dosing standards. 

Highlights: What I Like About Pump Serum

Pros vs Cons of taking Pump Serum

Awesome Pump

There should be no real surprise here, that a clinically dosed product called Pump Serum provides a great pump. 

If you enjoy the aesthetics of a workout pump and have a generous supplement budget, then you will likely enjoy Pump Serum.

Versatile for any time of day

Because Pump Serum contains no stimulants, making it a great option for individuals who work out late in the evening and don’t want to disrupt their sleep. 

It’s also a good option for individuals who are sensitive to caffeine or want to avoid it for personal reasons, but who still want a slight mental focus boost. 

Drawbacks What I Did Not Like About Pump Serum


A pre-workout is only effective if you can drink it, and I found the combination of the strong taste combined with the poor mixability made an overall unpleasant experience. 

Doesn’t Meet Clinical Standards with 1 scoop

Though Pump Serum advertises that it contains 40 servings, those are 40 single scoop servings. 

With just one scoop, Pump Serum falls short of clinical doses on nearly every single ingredient. In order to really reap the benefits of this product, a 2-scoop serving is required. 


On the surface, 40 servings at $1.37 looks like a very reasonable cost. As discussed, however, Pump Serum needs to be taken as a 2 scoop serving which makes the more accurate cost per serving $2.75. 

The most expensive pre-workouts that we’ve found cost $3.00 per serving, with the average being around $1.61 per serving. At $2.75, Pump Serum is well above average and in the highest price bracket. 

How Does Pump Serum Stack Up Against Our Criteria For Pre Workouts


Our rating: 2/5

With a single scoop serving, Pump Serum provides 40 servings at $1.37 per serving. Unfortunately, Pump Serum requires a two-scoop serving in order to meet clinical dosing standards on the majority of ingredients, halving the servings to 20 and doubling the cost to $2.75 per serving. 

Some of the most expensive pre-workouts we’ve found on the market cost around $3.00 per serving, which puts Pump Serum in the highest price bracket. 

Pump Serum does offer clinical dosing on the majority of its ingredients when a 2 scoop serving is taken, and it has a lot of pump and mental focus ingredients that work well together. 

If your number one priority is finding a product that is stimulant-free and provides a good pump, then Pump Serum may be worth the investment for you. 

I personally preferred the taste and results from Transparent Labs Stim-Free, which I thought provided better strength, tasted better, and saves you more than $1.00 per serving. 

Transparent Labs Stim Free


Our rating: 2/5

When 2 scoops are taken with the recommended amount of water, Pump Serum had a very strong and sour taste. The strong taste combined with the poor texture made it unappealing to drink. 

Interestingly, Pump Serum has significantly more beetroot extract than 4Gauge, and I couldn’t taste the beets at all in Pump Serum. 

This could be due to the fact that Pump Serum uses artificial flavors like sucralose which may be better able to mask the taste of the raw ingredients like beetroot. 


Our rating: 1/5

Pump Serum does not dissolve completely in water, making for a gritty, undesirable drinking experience. 

Pump Serum mixability

After testing so many pre-workouts that had reasonably good to excellent mixability, I considered removing mixability as a key criterion since I didn’t think it would ever be an issue. 

This product makes me glad that I kept mixability as a criterion because it was so off-putting that I struggled to thoroughly test this product since I didn’t want to drink it. 


Our rating: 1/5

Pump Serum does not provide a noticeable energy boost, but that is not a knock against this product because Pump Serum is not formulated for energy. It does provide increased mental focus, likely due to the combination of tyrosine and Nitrosigine ®. 

As a stimulant-free pre-workout, Pump Serum is not designed for increasing energy. In fact, nowhere on the container does it mention any benefit aside from Pump. 

Even the website doesn’t mention that this product increases energy, so it’s no surprise that this product didn’t provide a noticeable energy boost. 


Our rating: 5/5

With high doses of 7 different ingredients shown to support nitric oxide production and muscle pump, the aptly named Pump Serum definitely delivers on this front.  

With a 2 scoop serving, Pump Serum meets clinical dosing standards for all pump-enhancing ingredients for which clinical doses have been established. 

Pump Serum uses a wide variety of ingredients that work well together to enhance vasodilation and blood flow, providing a pump that is long lasting and supports recovery. 


Our rating: 3/5

While increased mental focus and blood flow (which Pump Serum provides) can help you grind out an extra couple of reps, the ingredients found in Pump Serum are not well-documented for providing significant increases in strength. 

Better blood flow to the muscles means better oxygen delivery which can support strength and recovery between sets, providing small enhancements to strength. 

Overall, Pump Serum is really designed to enhance pump and mental focus, with strength being secondary. 

Who Should Take Pump Serum? 

Pump Serum is a great option for people who:

  • People who want to prioritize “pump” over other performance-enhancing benefits 
  • People who are sensitive to caffeine or are trying to avoid stimulants 
  • People who workout late in the evening
  • People who don’t like the “tingly” feeling from certain pre-workouts (a side effect of beta-alanine, which is not in the Pump Serum formula)
  • People with a moderate to high supplement budget

Who Should Not Take Pump Serum?

I would find an alternative to Pump Serum if:

  • People looking for a caffeinated/high stim formula
  • People who have a restrictive supplement budget
  • People who have a sensitive stomach or commonly experience nausea when taking pre-workouts (the high doses make it more likely you will experience negative side effects)

What Are Other Customers Saying About Pump Serum? 

The reviews found on Amazon largely mimicked my own experience: Good pump, terrible taste, you can probably get away with a cheaper alternative and get similar results. 

On Amazon, Pump Serum has a 4/5 star rating which is actually pretty low compared to other pre-workouts which usually have closer to 4.5/5. There are only 130 total reviews for the product on Amazon though which is a pretty small sample size. 

On the Huge Supplements website, Pump Serum has a 4.7/5 star rating. 

It is common to see higher ratings on the official company website than on third-party retailers since people shopping directly from a company’s website are more likely to be fans of the brand and have a slight positive bias. 

Despite that, there are 1400 reviews on the Huge Supplements website, more than 10x what was found on Amazon which makes this a more reliable sample size. 

The 5-star reviews boast about the incredible pump that lasts 1-2 hours after the workout is finished. Even the positive reviews mention the very strong taste.

After browsing the 1-star reviews and weeding through the ones that were complaining about shipping delays, the majority of negative reviews had one of two threads: they either hated the taste and texture, or they felt like it didn’t do anything. 

The latter complaint is common among stimulant-free pre-workouts. I have even seen some reviews for some of the highest stimulant pre-workout also claim that the users “didn’t feel anything” so I always recommend trying a product for yourself. 

Pump Serum Alternatives

Transparent Labs Stim Free

Transparent Labs Stim Free

If you like the idea of a pump-focused, caffeine-free pre-workout but find that Pump Serum is a bit out of your budget, consider trying Transparent Labs Stim-Free Pre Workout.

Transparent Labs Stim-Free comes in a container with 30 clinically dosed scoops at $1.66 per serving, more than $1.00 per serving less than Pump Serum. 

Pump Serum is very clearly designed with the one key focus point of increasing nitric oxide production, and it has 7 different ingredients for that specific purpose. 

Transparent Labs Stim-Free, on the other hand, does have clinical doses of ingredients for pump, but also has ingredients for increasing strength, endurance, and mental focus to create a more well-rounded product. 

Transparent Labs Stim-Free is third-party tested, and contains zero artificial flavors, colors, or preservatives. 


Pump Serum is only one product of several which are manufactured by Huge Supplements. If you like the brand, but are looking for a formula that is high in caffeine and stimulants, then give Wrecked Pre-Workout a try.

Wrecked is formulated in a similar fashion, with a single scoop serving likely being good enough for beginners but falling short on clinical doses for experienced pre-workout users. 

Both Wrecked and Pump Serum delivers high doses of ingredients, with 31g of ingredients per serving. 

Wrecked has some similar ingredients to Pump Serum, including citrulline, glycerol,  betaine, and agmatine. 

With Wrecked, we also see the addition of a lot of ingredients for increasing mental focus and energy including Alpha GPC, Lion’s Mane, 2 types of caffeine, and yohimbine. 

If you want a high-energy, high-stim formula that also delivers a good pump, consider trying Wrecked. 

Wrecked comes at a slightly lower cost per serving, at $1.25 for a single scoop serving or $2.50 for a double scoop serving. 

Are There Any Promos or Discounts For Pump Serum? 

When going to the Huge Supplements website, you might be greeted by a pop up that allows you to subscribe to their VIP email list to receive 10% off your order and be among the first to know about new product drops. 

Huge Supplements also offers a military and First Responders discount which you can access here.

I cannot find any indication of a subscription on their website, which we’ve seen as a common feature among other brands. 

Frequently Asked Questions

Is Pump Serum The Best Pre Workout?

Pump serum is formulated for the very specific purpose of increasing nitric oxide production. If you are looking for a caffeine-free option for increasing pump, then Pump Serum is great. It does not provide much other benefit, though. 

Is Pump Serum Third Party Tested? 

I cannot find any indication on the product or the company website that Pump Serum is third party tested. 

Is Pump Serum Good For Weight Loss? 

Pump Serum does contain one ingredient, betaine, that can support increasing muscle mass and reducing fat mass. Weight loss is not Pump Serum’s specialty though, and on its own won’t provide noticeable weight loss. 

Is Pump Serum Safe For Women?

Pump Serum is safe for use by women. It should not be used while pregnant or breastfeeding.  

How Much Caffeine Does Pump Serum Have? 

Pump Serum contains zero caffeine or stimulants. 

Does Pump Serum Have Creatine?  

Pump Serum does not contain any creatine. 

How Long Does Pump Serum Last For? 

The pump provided from Pump Serum lasted through my 60-90 minute workouts, with the pump effects lasting up to an hour afterwards. Some users report feeling the pump effects up to 2 hours after finishing their workout. 

Does Pump Serum Need To Be Cycled? 

Pump Serum does not technically need to be cycled. It is my professional recommendation, however, that pre-workout either not be used every single day or you take one week off every 4-8 weeks to avoid building up a tolerance to the ingredients. 

Will Pump Serum Make Me Jittery?

Pump Serum does not contain any caffeine or stimulants and should not make you jittery. 

What Flavors Are Available For Pump Serum? 

Pump Serum is available in 4 different flavors: Jungle Juice, Cherry Berry, Strawberry Mojito, and Island Dream. 

Where Is Pump Serum Made? 

Pump Serum is made in the USA using globally sourced ingredients. It is manufactured in a cGMP compliant facility. 

What Is Huge Supplements’ Shipping Policy? 

All orders are shipped out within 24-72 hours. Orders within the USA typically arrive within a few business days, but may be delayed for international orders. Shipping costs vary by location. Huge Supplements ships to all valid APO, FPO, or DPO military addresses.

What Is Huge Supplements’ Return Policy? 

Returns must be submitted within 14 days of purchase. Returns must be unused. Refunds, if applicable, will be issued within 5-7 business days of Huge Supplements receiving your returned item. Sale items cannot be refunded. 

How To Contact Huge Supplements? 

Customer support is available 9am-5pm Monday through Friday. You can fill out the contact form available on their website (found here) or via e-mail at support@hugesupplements.com

Find Huge Supplements on social media on Instagram (still active) and Facebook (no updates since June of 2022). 

Pump Serum

Pump Serum

Pump Serum is best for people who want increased pump and endurance but want to avoid any sources of caffeine or other stimulants. It’s also good for late-night exercisers.

About The Author

Jennifer Vibert

Jennifer Vibert is a Certified Strength and Conditioning Specialist, Nutrition Coach, and supplement store manager. She has a Bachelor of Kinesiology with a major in Fitness and Lifestyle and a minor in Psychology from the University of Regina. She is a Certified Nutrition Coach through Precision Nutrition, with a passion for helping clients learn the fundamentals of nutrition and supplementation in order to build healthy, sustainable habits.

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I’ve Tested 28+ Pre-Workouts, Here’s My #1 Pick


  • Proven Doses: Ingredients Dosed To Clinical Standards
  • Great Value: 17% Cheaper Than Other Similar Formulas
  • Well-Rounded: Excellent for Pump, Energy, & Strength


  • Proven Doses: Ingredients Dosed To Clinical Standards
  • Great Value: 17% Cheaper Than Other Simliar Formulas
  • Well-Rounded: Excellent for Pump, Energy, & Strength

Read my review