Pre Build

Pre Build , 30 Servings Gummy Worm

An Advanced Pre-Workout Formulated For Extreme Energy And Enhanced Focus*
Contains 1.25G Betaine, 1.6G Beta-Alanine And 1.5G L-Citrulline For Supported Performance And Pumps*
8.6  out of 10  (79 Reviews)
1 Size
30 Servings
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Price: $34.99  ($1.17 / Serving)
Flavor Rating: 8.2

Product Overview



MuscleTech Lab Series PRE-BUILD

Extreme Energy and Enhanced Focus*

Superior Pumps and Performance*

Max Muscle and Strength*


MuscleTech® Lab Series Pre-Build is our most complete pre-workout. Unlike the other guys, it features only the highest quality key ingredients in research-inspired doses, and fully discloses them on the label, so you know exactly what you’re getting. Prepare for more energy, the best pumps, enhanced focus plus more raw strength, power and muscle.*


Lab Series Pre-Build was engineered to deliver the ideal combination of clinically dosed key ingredients for unparalleled energy, extreme muscle pumps and performance, and a powerful sensory experience!*

The unique combination of choline bitartrate and TeaCrine® provides a powerful sensory experience, while a research-inspired dose of a precise caffeine molecule delivers enhanced energy and focus.*

There’s also a research-inspired dose of L-citrulline for better pumps plus a grape and apple extract blend.*

In the past, arginine was a staple in most pre-workout products due to its ability to increase Nitric Oxide (NO). Then, a few years ago, research emerged that showed L-citrulline was extremely effective at increasing blood arginine levels. Citrulline is a precursor of arginine and it provides a readily available material for arginine production, which in turn can be used for the production of NO. In fact, compared to a larger dose of arginine, L-citrulline has been scientifically shown to reach superior peak plasma arginine levels, making it a far better choice for NO production in your pre-workout! This is due to arginine itself, when consumed as a supplement, excessively breaking down in the body. Citrulline, on the other hand, is less susceptible to these destructive metabolic pathways, making it far more effective and efficient.*










While other pre-workout formulas may have some of the same ingredients, Lab Series Pre-Build features superior and full clinical doses of beta-alanine, betaine and taurine.*

In a 2009 study, active college males taking 2.5g of betaine per day (found in 2 scoops of Pre-Build) for two weeks improved muscle endurance (squats) and increased the quality of repetitions performed. Researchers concluded that two weeks of betaine supplementation can significantly improve muscle endurance in the lower body (via more squat reps), as well as improve the quality of the workout by improving the number of repetitions performed at 90% of the subject’s maximal peak power output.[ii]*

In a 2013 study, conducted at the College of Springfield in Massachusetts and published in the Journal of the International Society of Sports Nutrition, researchers found that subjects who supplemented with 2.5g of betaine along with weight training gained 3.75 lbs. of muscle in 6 weeks! What’s key about this study is, subjects were strength-trained men between the ages of 18 and 35. These men were required to have 2 years of strength training at least 3 times per week. Plus, they needed to meet minimum strength requirements of being able to at least bench-press their bodyweight and squat at least 1.25 times their bodyweight. This is key as it shows betaine can help even the most experienced lifters — which makes betaine a must-have ingredient in any supplement arsenal![i]*

i Cholewa et al., 2013. Journal of the International Society of Sports Nutrition. 10:39.
ii Hoffman et al., 2009. Journal of the International Society of Sports Nutrition. 6:7.

MuscleTech Lab Series PRE-BUILD

Beta-alanine is one of the key supplement breakthroughs of the last 10 years and Lab Series Pre-Build utilizes a full researched 3.2g dose in each 2-scoop serving. When consumed, it passes directly from the bloodstream into muscle, where it binds to the essential amino acid L-histidine to form carnosine – a dipeptide that is your muscles’ first line of defense against the lowering of pH within your muscle cells during exercise. The lowering of pH is a major factor in muscle fatigue – negatively affecting enzyme function and muscle contraction events. As your muscles’ pH drops, so does their ability to contract forcibly and maintain a high level of performance throughout a workout.*

Research backs the effectiveness of this powerful ingredient and the studies are numerous. Research shows that beta-alanine is capable of decreasing fatigue rate and improving performance during training – enhancing the muscle and strength-building process!*

The 1g dose of taurine found in a full serving of Lab Series Pre-Build is clinically shown to improve performance in endurance athletes. This free-form amino acid is one of the most abundant amino acids in muscle and also aids in cell volumization.

Balshaw et al., 2013. Amino Acids. 44(2):555–61.



  • Only the highest quality ingredients
  • Guaranteed pure protein
  • Fully disclosed formulas
  • Clinically dosed, lab-tested key ingredients

MuscleTech® researchers have taken an unparalleled leap in their commitment to supplement science by partnering with the Faculty of Kinesiology of the University of Toronto – an institutional leader with a long history of innovation and research – to support the MuscleTech Metabolism and Sports Science Lab.

As part of the $58-million, state-of-the-art Goldring Centre for High Performance Sport of the University of Toronto, the partnership with the new lab reaffirms our devotion to developing ingredients with extreme efficacy validated by unbiased scientific research. The prestigious University of Toronto was recently ranked in the Top 20 for overall performance as stated in the Times Higher Education World University Rankings 2013–2014 report. The MuscleTech Metabolism and Sports Science Lab features novel technologies and equipment to carry out gold-standard research on new, emerging ingredients.

As the first partnership of its kind, it is at the forefront of muscle physiology, sports performance and nutritional biochemistry. MuscleTech researchers’ passion and vision to continuously research, develop and patent the most effective sports supplements in the world has led to the MuscleTech Lab Series – a complete line of advanced products that promises extreme efficacy, with key ingredients validated by scientific research. MuscleTech Lab Series products are based on research from universities and third-party labs all around the world, including, what will be emerging research from the Metabolism and Sports Science Lab. MuscleTech Lab Series is the brand you can trust for superior science and superior results.


Each bottle of MuscleTech® Lab Series Pre-Build is fully disclosed with no proprietary blends, or hidden or underdosed key ingredients.


To ensure a high standard of quality and purity, each batch of MuscleTech® Lab Series Pre-Build undergoes strict quality control and is third-party tested and verified to ensure that each bottle of meets the highest standards of purity, quality and consistency.


As an athlete, we understand that one of your key concerns is knowing exactly what you put in your body. That’s why Team MuscleTech® is committed to providing the highest quality scientifically formulated products that are free of banned substances. And that’s why each batch of MuscleTech Lab Series Pre-Build is guaranteed to be banned substance free so you can rest assured you’re taking only the best to be the best.


MuscleTech® researchers worked closely with industry-leading flavoring experts to guarantee that each high-quality serving of MuscleTech Lab Series Pre-Build delivers a mouthwatering flavor experience that will have you craving every serving!

Ratings & Reviews

Overall Rating
79 Ratings
Verified Buyer Rating
3 Ratings
Average Flavor Rating
1 Flavors
Top Rated Flavor
Gummy Worm
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Verified Buyer
  • 6 Gummy Worm

Starts of tasting sweet and ends tasting tart. Sometimes it was hard to drink this stuff once I got to the bottom of the cup. Unfortunately this stuff didn't do anything for my energy, focus, or pump. The most I ever took at once was 2.5 scoops and I got a slight tingly feeling that quickly faded away. I feel like MuscleTech needs to consolidate the 30 different pre-workouts they have and make one good pre-workout.

Verified Buyer
  • 6 Gummy Worm
Verified Buyer
  • 4 Gummy Worm

Didnt taste very much like Gummy Worms. Tasted more like a cherry/raspberry blend. Ive tried the LIT gummy worm at a local GNC, which was really good and did taste like gummy worms. I didnt buy it as it was a little expensive for me, but if you really want gummy worm flavor, i would try the LIT version The mix didnt blend all that well either. I still had a bunch of pieces floating around in my water bottle even after shaking like crazy for 5 minutes. Also didnt really feel the Beta-Alanine effect like i normally do, even with taking 2 scoops

  • 10 Gummy Worm

Tastes just like gummy worms!!

  • 5 Gummy Worm

This is great!

  • 10 Gummy Worm

This product get you so ready to hit the gym it will make you wane work out

  • 10 Gummy Worm

Great Product

  • 10 Gummy Worm


  • 10 Gummy Worm
  • 10 Gummy Worm
  • 10 Gummy Worm

I enjoyed the Pre Build quite a bit. I still have a few scoops left. The TASTE is delicious: a great mixture of sweet/sour, and more on the sour side. I liked it very much. The MIXABILITY was good, but you will have to keep adding water as you get to the bottom of your shaker, in order to avoid a bitter taste, which I am guessing is due to the Teacrine in there. If you add a bit of water to the last few sips, you'll be fine. The PROFILE is good: good dosing. I ended up with 1 scoop servings but I heard others going with 2 scoops on a regular basis. I was fine at 1 scoop. The PRICE is right. You get what you pay for, and it won't break your bank. I highly recommend this. One of my favorites so far!

  • 1 Gummy Worm

Great product! It tastes great and delivers a great amount of energy and a great pump. I would definitely recommend this product. I had family members begging for scoops lol!

  • 9 Gummy Worm

This preworkout was great once I figured out how much to take effectively. 1.5-2 scoops was the perfect range for me. During my workouts I felt energetic and focused the entire time, roughly an hour each workout. I also had a great pump afterwards and felt pretty vascular and could notice how pumped I was after lifting. Hit some pretty good volume and weight while using this preworkout. I would recommend this for people who have a low and high stim tolerance. The 1 scoop and 1.5-2 scoops work for both of them.

  • 10 Gummy Worm

I definitely recommend Pre-Build as it delivers excellent energy & endurance. Tastes just like gummy worms in 16+ oz of water & mixes easily; once paired with additional pump supporting ingredients & creatine it becomes especially powerful due to the substantial amount of polyphenols which upregulate NOS for lasting pumps & endurance in combination with beta-alanine & betaine. Most importantly, it's novel use of Galangal provides numerous health benefits: anti-cancer/fungal/bacterial, anti-inflammatory, antioxidants, etc. I really enjoy the stims b/c I can actually feel it at the given dosages due to it's unique combination (caffeine, theacrine, yohimbe), while being balanced w/ashwagandha (10% withanoides) for cortisol support preventing anxiety. A single scoop is ideal for beginners or those who like to take it a bit lighter & 2 for heavier sessions w/greater repetitions.

  • 8 Gummy Worm

Starting off this product is actually great, I have tried plenty of pre-workouts. Most preworkouts give you that cracked out feel. This one keeps your body under control with a great pump. Usually I cant take preworkout because I panic and get too warm but, PreBuild was probably the first preworkout that I was able to take and have that super pump feeling without the shaking and anxiety. One negative thing was the taste, the gummy bear can be tasted well but has a sort of weird after taste. Not that taste matters that much for gym guys. Either way it was a great product and I will definitely be using it again.

30 Servings
30 Servings
$1.17 Per Serving
Gummy Worm

What's in MuscleTech Pre Build

Serving Size 1 Scoop (9g)
Servings Per Container Approx.30
Amount Per 1 scoop %DV
Calories 20       
Total Carbohydrate 1 g <1%%
Sugars 0 g
Sodium 65 mg 3%
Performance & Endurance Compound
Carnosyn® Beta-Alanine 1.6 g
Taurine 500 mg
Pump Matrix
L-Citrulline 1.5 g
ViNitrox™ Grape Extract (as Vitis vinifera) (marc) and Apple Extract (as Malus pumila) (skin) 250 mg
Standardized for 95% Polyphenols       
Musclebuilding Matrix
Betaine Anhydrous 1.25 g
Neurosensory Blend
Galangal extract (as Alpinia officinarum) (root) 150 mg
Choline Bitartrate 100 mg
Sensoril® Ashwagandha Extract (as Withania somnifera) (root and leaf) 62.5 mg
Yohimbe Extract 20 mg
as Pausinystalia yohimbe) (bark)       
Standardized for 6% yohimbine       
Energy + Matrix
Caffeine Anhydrous 175 mg
TeaCrine® (supplying 40% theacrine) 62.5 mg
† Daily Value not established.
Other Ingredients:
Malic Acid, Silicon Dioxide, Natural and Artificial Flavors, Resistant Maltodextrin, Sucralose, Tartaric Acid, Salt, Acesulfame-Potassium, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), FD&C Red No. 40.
Processed in a facility that also processes milk, egg, wheat, soy, peanut, tree nut, fish and shellfish ingredients.

Directions For Pre Build: Please read the entire directions before consuming and follow the tolerance assessment protocol. Assess your tolerance first by mixing 1 serving (1 scoop) with 8 oz. of cold water and consuming it about 30 minutes before your daily workout. Once tolerance has been assesed, increase the dosage to 2 scoops mixed with 16 oz. of water before working out. Do not exceed 2 scoops in a 24-hour period. Drink a glass of water daily for general good health.

Warnings: Not intended for use by persons under 18. Do not use if pregnant or nursing. One serving of this product contains up to as much caffeine as two cups of coffee. Caffeine-sensitive individuals may experience symptoms including (but not limited to) restlessness, nervousness, tremors, anxiety, increased heart rate and difficulty sleeping. Do not combine with other sources of caffeine or stimulants. Some individuals may experience a harmless tingling sensation from the concentrated performance dose of beta-alanine. Consult a medical doctor if you have a medical condition or before starting any diet or exercise program. KEEP OUT OF REACH OF CHILDREN.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.