Pre-Workout PRO ST is a concentrated pre-workout powder of the highest quality with a perfectly balanced composition; all essential amino acids, caffeine, yerba mate and precursors of nitric oxide. Scientifically proven by the University of Greenwich, it provides all the necessary nutrients to enhance your workouts and competitions, both in strength and endurance. ST line [Scientific Tested]. Certified by Informed Sport.
 
Pre-Workout PRO ST is a high-quality powdered pre-workout supplement with a perfectly balanced composition scientifically proven by the University of Greenwich. It provides all the necessary nutrients to enhance performance in both strength and endurance training and competition.
 
Extra essential amino acids
With caffeine and nitric oxide precursors
Low in carbohydrates and no added sugars
Scientifically proven efficacy through our own study
 
Essential Amino Acids
Fundamental for optimal muscle function during activity. Pre-workout intake has been shown to delay fatigue and enhance recovery by reducing muscle breakdown. Delivered in an optimal ratio similar to that of muscle mass.
 
Nitric Oxide Precursors (NO)
The exchange between Citrulline and Arginine in the presence of oxygen releases NO. When it binds to specific receptors, it causes vasodilation, increasing blood and nutrient flow to active muscles and potentially improving performance.
 
Taurine
Has antioxidant, metabolic, and ergogenic effects. When combined with other ingredients, it improves muscle endurance during exercise and stabilizes cell membranes, facilitating the transport of key minerals.
 
Tyrosine
Enhances focus and concentration when combined with caffeine—key for maximum performance in training or competition.
 
Betaine
This glycine derivative enhances performance by boosting creatine resynthesis and increasing NO levels. It also improves total workload to fatigue as well as strength and power output.
 
Acetyl-L-Carnitine
Crosses the blood-brain barrier and acts on two fronts: improves mitochondrial metabolism by donating acetyl groups (acetyl-CoA) and supports cognitive function by aiding acetylcholine synthesis.
 
Caffeine and Yerba Mate
Includes pure caffeine and yerba mate extract, the top ingredient for boosting endurance and strength. Stimulates the central nervous system, delays fatigue, optimizes glycogen and fat use, and enhances muscle contraction—especially under fatigue.
 
Like all Crown Sport Nutrition products, it offers outstanding taste and digestibility.
 
Scientific study published in Nutrients: The ingredient matrix was tested using 2 servings of Pre-Workout PRO ST (30 g) with approximately 16 g of added carbohydrates. To replicate the study, add 2/3 of a serving of Isodrink & Energy Lemon (about 20 g) to maximize effectiveness.
 
Format and Flavors
Flavors: Citrus and Blue Storm
300 g jar (20 servings of 15 g)
 
How to use depending on the body weight of the person:
 
People up to 80 kg: mix 15 g (3 level scoops, equivalent to one dose) in 250 ml of water and drink it approx. 45 to 30 minutes before training.
People between 80 and 100 Kg: mix about 22.5 g (4.5 scoops, equivalent to 1.5 shots) in 300 ml of water and drink it approx. 45 to 30 minutes before training.
People over 100 kg: mix about 30g (6 level scoops, equivalent to 2 doses) in 400 ml of water and drink it approx. 45 to 30 minutes before training.