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Muscletech Lab Series Pre Build Gummy Worm 30 Servings


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  • Brand: MuscleTech


2.5g Betaine ‡
3.2g Beta-Alanine ‡
3g L-Citrulline ‡
30 Servings

‡ Per 2 Scoops


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.*

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.

Fully Disclosed Formula

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

Guaranteed Banned Substance Free

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. 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.

PRE Build Direction

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 downing it about 30 minutes before your daily workout. Once tolerance has been assessed, 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. Maintain an adequate state of hydration during use.


*The products and the claims made about specific products on or through this website have not been evaluated by this website or the United States Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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