Pre-Workout - Rainbow Candy - 1 Serving


Get ready to meet your new favorite pre-workout. 373 Lab's Rainbow Candy Pre-Workout is now available in a single serving!

One serving of 373 Lab's Rainbow Candy Pre-Workout contains 150mg of natural caffeine and performance-enhancing ingredients, including Citrulline Malate, Beta-Alanine, L-Arginine, L-Tyrosine, and L-Theanine. All to help you push through a few more reps, sets, or miles so you power through when it matters most!

Mix it in a tall glass of water and ice to taste the fruit explosion of grape, strawberry, green apple, and orange – blended perfectly to give you a refreshing and tasty burst of energy!



  • 150mg of natural caffeine for a surge of sustainable energy.
  • 4g of Citrulline Malate to help increase blood flow.
  • 2g of Beta-Alanine to boost muscular endurance and help shuttle lactic acid. 
  • 200mg of L-Theanine to help increase energy and focus without the jittery side effects and post-workout crash.
  • 500mg of L-Tyrosine to improve concentration and focus.
  • Naturally flavored to give you a delicious and refreshing dose of pre-workout.


Mix 1 serving into 8 ounces of cold water and shake until it is well-mixed. Drink 15 minutes before exercise.

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