Transparent Labs LEAN Pre-Workout

An image of Transparent Labs LEAN pre-workout

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  • Formulated for those looking to lose weight but maintain muscle mass
  • 14 grams of evidence-based ingredients
  • Naturally flavored and sweetened with Stevia
  • Available in 9 different flavors
  • Backed by a 60-day money-back guarantee
Manufacturer: Categories: ,

In-Depth Review

Transparent Labs LEAN Review (2024): The Best Pre-Workout for Cutting?

Transparent Labs LEAN Review (2024): The Best Pre-Workout for Cutting?

In this Transparent Labs LEAN review, we tested out and rated our experience using this pre-workout that also doubles as a fat burner. Read the full review.

Pros & Cons

What we like ...
  • Includes vitamins/micronutrients to support thyroid production
  • High levels of citrulline to increase oxygen delivery to muscles
  • No artificial sweeteners
  • No artificial colors
  • 60-day money-back guarantee
What needs improvement ...
  • Bitter and unpleasant taste for some consumers
  • Several reports of receiving wrong item

Product Summary

Transparent Labs’ LEAN Pre-Workout supplement is designed for those looking to optimize both body composition and fitness performance. Each serving is formulated with 14 grams of active research-based ingredients including citrulline malate, BetaPure betaine, beta-alanine, and Infinergy sustained-release caffeine. Additionally, LEAN Pre-Workout features micronutrients that help promote thyroid hormone production. 

All ingredients serve a very specific purpose. LEAN is intended to support improved focus, endurance, and power and to boost digestion, adrenaline, and fat loss. The variety of ingredients and effects are appreciated by consumers who report better overall performance. Transparent Labs has had LEAN Pre-Workout drink third-party tested to ensure its effectiveness.

Available in nine different flavors, many consumers struggled with the taste. They are naturally flavored and sweetened with Stevia but many report a bitter aftertaste.

* 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.



Watermelon, Sour Grape, Green Apple, Orange, Blue Raspberry, Strawberry Lemonade, Tropical Punch, Lemon Lime, Sour Peach

Key ingredients

Citrulline malate, Beta-Alanine, BCAA 2:1:1, BetaPure Betaine Anhydrous, Acetyl L-Carnitine HCI, Choline Bitartrate, L-Theanine, caffeine Anhydrous, Theobromine, Infinergy, BioPerine

Serving size

30 servings per tub, 16.5g per serving

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Transparent Labs LEAN Pre-Workout

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      Transparent Labs’ LEAN pre-workout supplement promises to deliver better endurance, power, alertness, and focus. The fat loss component is less of a guarantee with few reports of an actual change in body composition.