Our most complete pre-workout and features only the highest quality key ingredients in research-inspired doses.
  • Get extreme energy to make each workout count
  • Superior pumps & performance for shirt-splitting gains
  • Maximize muscle & strength
Our most complete pre-workout and features only the highest quality key ingredients in research-inspired doses.
  • Get extreme energy to make each workout count
  • Superior pumps & performance for shirt-splitting gains
  • Maximize muscle & strength
2 for $34.99
Enhance Performance
Lab Series
Before Workout

2 for $34.99

  • Pre-Workout
  • Extreme Energy
  • Enhanced Focus

Lab-Tested Pre-Workout for Maximum Energy

How it Works

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. This formula will give you more energy, better focus and a unique sensory experience. The result is an explosive workout, leading to better performance and more lean muscle. Prepare for a blast of energy, the best pumps and enhanced focus, plus more raw strength, power and muscle.

Who Should Use it

Pre-Build is perfect for active men and women looking for scientifically backed energy and extra focus for intense workouts to help build lean muscle.

MuscleTech Ambassador

Lab Series Pre Build

When to Take

30 minutes prior to workout.

How to Take

To assess your tolerance, mix 1 scoop with 8 oz. of cold water. Once your tolerance has been assessed, increase to 2 scoops with 16 oz. of water.

Stack it

Try it with Clear Muscle® for musclebuilding power and After Build® for post-workout recovery.

From Lab Bench to Gym Bench

MuscleTech® researchers have partnered 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. MuscleTech Lab Series products are based on research from universities and third-party labs all around the world, including emerging research from the Metabolism and Sports Science Lab for trusted results.


  • Only the highest quality ingredients
  • Key ingredients backed by real scientific research
  • Fully disclosed formulas
  • Clinically dosed, lab-tested key ingredients
MuscleTech Ambassador
3g L-Citrulline


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 Vinitrox™, a unique and clinically studied grape and apple extract blend, shown to enhance exercise performance.

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.

Schwedhelm et al., 2007. British Journal of Clinical Pharmacology. 65(1):51-59.

Deley et al., 2017. Nutrients. 9-917.



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 2 weeks improved muscle endurance (squats) and increased the quality of repetitions performed. Researchers concluded that 2 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.

3.2g Beta-Alanine

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.

‡ Per 2 Scoops


Each bottle of 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 has the highest purity, quality and consistency.


We understand that, as an athlete, 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 After 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 Lab Series Pre-Build delivers a mouthwatering flavor experience that will have you craving every serving!


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.

Customers Also Viewed