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Performance® Pre-Workout Energy Drink

Item: #21510

Fuel for longer, harder workouts*

Get the most out of what you put in. Delivers natural energy from caffeine that's derived from green tea extract for a long-lasting boost plus beta-alanine and L-theanine to improve physical performance, delay muscle fatigue, reduce perceived exertion, and sharpen focus.* 

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Fitness Tip: Partner your pre-workout with hydration. Endurance Electrolyte Drink is clinically proven to hydrate better than water.
Retail Price: $39.75 $1.33/day
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Gluten Free
Star-K Kosher
Nut Free
Soy Free

Delivers 100 mg natural caffeine from green tea extract, 800 mg beta-alanine, and 100 mg L-theanine in a convenient stick pack. Simply mix with water for long-lasting energy without the crash.* Available in a refreshing Natural Lemon flavor.  

Contains 100 mg of caffeine per serving.
Not recommended for children, pregnant or nursing women, or those sensitive to caffeine. If you have a medical condition, consult with a physician before using this product. Do not consume more than 2 stick packs in 3–4 hours.

Mix 1 stick with 8 oz. of water or drink of choice. Drink 30 minutes before exercise.

Performance® Pre-Workout Energy Drink Product Sheet

What Causes Exercise Exhaustion?
When you exercise, your body uses oxygen to break down glucose for energy. During intense exercise, when there isn't enough oxygen available, your body makes lactate, which can be converted into energy without oxygen. Hydrogen ions are also produced during that process. Hydrogen ions decrease the pH level in your muscles, reducing your muscles’ ability to contract and resulting in fatigue.

Carnosine acts as a buffer against hydrogen ions, which helps reduce muscle fatigue and exhaustion to improve performance.

How the Ingredients in Pre-Workout Drink Help

Beta-alanine is a naturally occurring, non-essential amino acid. When combined with L-histidine, another amino acid, beta-alanine increases muscle carnosine concentrations. Muscle carnosine is important because it acts as an intracellular buffer against hydrogen ions that can accumulate during high-intensity activity. An increase in hydrogen ions can cause a decline in muscle pH, which can lead to a faster onset of fatigue and reduce your ability to perform. Supplementing with beta-alanine has been shown to increase carnosine levels in the muscle and improve performance by delaying fatigue.*1-3

Caffeine is classified as a stimulant. It increases activity in the central nervous system. It does this by acting as an adenosine antagonist. Adenosine is a neurotransmitter that binds to specific receptors and makes us feel drowsy. Caffeine binds to those same receptors, blocking the adenosine from working, which can enhance athletic performance.*


What ingredients are in the Pre-Workout Drink?
The Performance® Pre-Workout drink is formulated with naturally occurring ingredients, including 100 mg caffeine from green tea extract, 100 mg L-theanine, and 800 mg beta-alanine.

Why does the Pre-Workout Drink contain caffeine?
Caffeine provides an energy boost that has been shown to support athletic performance.* It does this by acting as an adenosine antagonist. Adenosine is a neurotransmitter that binds to specific receptors in the brain and makes us feel drowsy. Caffeine binds to the same receptors, blocking adenosine from working.*

How much caffeine is in one serving of the Pre-Workout Drink?
One serving of the Pre-Workout Drink contains 100 mg of natural caffeine from green tea extract. One stick pack contains caffeine equivalent to about one cup of coffee.

What is beta-alanine?
Beta-alanine is an amino acid that is produced naturally in the body and is used to synthesize carnosine. Carnosine helps reduce acid that accumulates in the muscle during high-intensity activity. Carnosine is important because it can help you work out longer by delaying the muscle fatigue that can result from the accumulation of acid.*1-3

How do the ingredients in the Pre-Workout drink help reduce perceived effort and improve physical performance?
Muscle fatigue can affect your ability to continue your workout. One of the causes of muscle fatigue during exercise is the build-up of acid in your muscles. Beta-alanine increases carnosine production, and carnosine helps regulate acid build-up to help delay muscle fatigue and improve exercise performance.*1-3

How does L-theanine sharpen focus?
L-theanine is an amino acid that increases alpha waves in the brain.* Alpha waves are produced in the brain of an individual during a relaxed state. Alpha wave activity is associated with improved performance under stress, improved concentration and cognitive function, and increased alertness.4

Does the Pre-Workout Drink have a flavor?
The Pre-Workout Drink has a natural lemon flavor.

Can I use the Pre-Workout Drink with Sustained Energy Boost*? Energy Chews? Energizing Tea?
Because all of these products contain caffeine, please use only one product at a time. Do not use these products if you are sensitive to caffeine, pregnant, or nursing.

What’s the best way to drink Pre-Workout Drink?
We recommend mixing 1 stick in 8 oz. of water or your drink of choice. Drink 30 minutes before exercise.

How many stick packs can I take a day?
Healthy adults should have no more than 200 mg of caffeine (two stick packs) over 3-4 hours and no more than 300 mg of caffeine (three stick packs) per day.

Is it safe to use Pre-Workout Drink if I am currently taking medications or have a medical condition?
Consult with your physician before using the Pre-Workout Drink if you have a medical condition, are taking a prescription medication, or are concerned about how you will react to the drink.

Can this product be used when pregnant or nursing?
The Pre-Workout Drink is not recommended for use by pregnant or nursing women or those sensitive to caffeine as one stick pack contains 100 mg of caffeine.

Can this product be used by children?
The Pre-Workout Drink is formulated for adults and is not recommended for use by children under the age of 18.

I felt a tingling sensation when I took the Pre-Workout Drink. Should I be concerned?
While not everyone will experience tingling, this sensation is a common side effect of beta-alanine that can last for up to an hour. There is no evidence to suggest that this tingling is harmful in any way.5

Is Pre-Workout Drink vegan?

Is Pre-Workout Drink Star-K Kosher certified?

Is Pre-Workout Drink gluten-free, soy-free, dairy-free, and non-GMO?

Product Label

100% Money Back Guarantee. Even if it's 100% used up.

Key Ingredients

A Look at the Numbers

Shaklee leaf

100 mg


Contains 100 mg caffeine from green tea extract

800 mg


Contains 800 mg beta-alanine, a non-essential amino acid

100 mg


Contains 100 mg L-theanine, a non-essential amino acid

*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.
  1. Smith, A., Sturgess, W., Gallagher, J. Effects of a low dose of caffeine given in different drinks on mood and performance. Hum. Psychopharmacol. Clin. Exp. 14: 473-482, 1999.
  2. Quinlan, P.T., Lane, J., Moore, K.L., Aspen, J., Rycroft, J.A., O'Brien, D.C. The acute physiological and mood effects of tea and coffee: the role of caffeine level. Pharmacol. Biochem. Behav. 66(1):19-28, 2000.
  3. Peeling, P., Dawson, B. Influence of caffeine ingestion on perceived mood states, concentration, and arousal levels during a 75-min university lecture. Adv. Physiol. Educ. 31(4):332-335, 2007.
  4. Heckman, M.A., Weil, J., de Mejia, E.G. Caffeine (1,3,7-trimethylxanthine) in foods: a comprehensive review on consumption, functionality, safety, and regulatory matters. J. Food Sci. 75(3):R77-R87, 2010. Van Dam, R.M., Hu, F.B., Willett, W.C. Coffee, caffeine, and health. N. Engl. J. Med. 383(4):369-378, 2020.
  5. van Dam, R.M., Hu, F.B., Willett, W.C. Coffee, caffeine, and health. N. Engl. J. Med. 383(4):369-378, 2020.
  6. Goldstein ER, Ziegenfuss T, Kalman D, Kreider R, Campbell B, Wilborn C, Taylor L, Willoughby D, Stout J, Graves BS, Wildman R, Ivy JL, Spano M, Smith AE, Antonio J. International society of sports nutrition position stand: caffeine and performance. J IntSoc Sports Nutr 2010;7:5.
  7. Ganio MS, Klau JF, Casa DJ, Armstrong LE, Maresh CM. Effect of caffeine on sport-specific endurance performance: a systematic review. J Strength Cond Res 2009;23:315-24.
  8. Trexler ET, Smith-Ryan AE, Stout JR, Hoffman JR, Wilborn CD, Sale C, Kreider RB, Jager R, Earnest CP, Bannock L, Campbell B, Kalman D, Ziegenfuss TN, Antonio J. International Society of Sports Nutrition position stand: beta-alanine. J Int Soc Sports Nutr 2014;12:30.
  9. Thomas DT, Erdman KA, Burke LM, MacKillop M. Position of the Academy of Nutrition and Dietetics, Dietitians of Canada, and the American College of Sports Medicine: Nutrition and athletic performance. J Acad Nutr Diet 2016;116:501-28.
  10. Culbertson JY, Kreider RB, Greenwood M, Cooke M. Effects of beta-alanine on muscle carnosine and exercise performance: a review of the current literature. Nutrients. 2010 Jan;2(1):75-98. doi: 10.3390/nu2010075. Epub 2010 Jan 25. PMID: 22253993; PMCID: PMC3257613.
  11. Owen GN, Parnell H, De Bruin EA, Rycroft JA. The combined effects of L-theanine and caffeine on cognitive performance and mood. Nutr Neurosci. 2008 Aug;11(4):193-8.
  12. Kimura K, Ozeki M, Juneja LR, Ohira H. L-theanine reduces psychological and physiological stress responses. Biol Psychol. 2007 Jan 74(1):39-45
  13. Unno K, Tanida N, Ishii N, Yamamoto H, et al. Anti-stress effect of theanine on students during pharmacy practice: positive correlation among salivary α-amylase activity, trait anxiety and subjective stress. Pharmacol Biochem Behav. 2013 Oct;111:128-35

Estimates based on calculations of product usage over 30 days.

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