PreSeries LEAN Ingredient Review

Supps SimplifiedPre-Workouts0 Comments

1-Serve Rating
Bonus Points
2 Serves
We do not recommend taking more than 1 serving, due to levels of certain ingredients.

PreSeries LEAN, Simplified

PreSeries LEAN is a combined pre-workout and fat burner made by Transparent Labs.

It prides itself on using clinically effective doses of a majority of its ingredients, which help its users to have more effective workouts while burning extra fat.


  • 2.2 cups of coffee’s worth of caffeine per scoop

PreSeries LEAN is a relatively low-caffeine formula compared to some of its competitors, but this is most likely due to the inclusion of other ingredients like hordenine and synephrine.


  • L-Theanine – Increases focus through promoting relaxation without sedation (great dose)
  • Caffeine – Improves alertness and motivation (good dose)
  • Hordenine – May improve mood and alertness (stimulant and MAO inhibitor)
  • L-Tyrosine – Improves mood and focus (poor dose)
  • Choline Bitartrate – May improve cognition and mood (poor form of choline)
  • Mucuna Pruriens (Velvet Bean) – May improve mood via dopamine increase (poor dose)

The formula has a bunch of mood and focus-enhancing ingredients, but it was a little surprising to see that three off these weren’t great forms or doses.

Overall, though, it should be decent for focus, un-jittery energy, and a slight mood boost – mostly thanks to the l-thenine, caffeine, and hordenine.


  • Citrulline Malate – Improves endurance via Nitric Oxide production (optimal dose)
  • Betaine – Improves power output and endurance (optimal dose)
  • Caffeine – Can increase power output and endurance at dose provided
  • Beta Alanine – Improves endurance by delaying fatigue (good dose)

PreSeries LEAN only has a few performance ingredients, and could have done slightly better in this category if it added one or two more.

They claim to have skipped the creatine since they believe its effects are dulled by caffeine, however this may be an invalid concern.

Bigger doses of beta alanine and caffeine would have been beneficial, but were most likely avoided due to excessive “tingles” and possible danger in a high-caffeine/hordenine combo.


  • Citrulline Malate – Increases pumps via Nitric Oxide production (optimal dose)

PreSeries LEAN could have done a little better in this category with an extra ingredient or two for pumps.


  • Synephrine HCl – Burns fat in a similar way to ephidrine (speeds up metabolism)
  • Chromium – Suppresses appetite and controls blood sugar
  • Piperine – May increase the absorption of the other ingredients
  • Thyroid support (Iodine, Zinc, Selenium, Copper, Guggulsterones)
  • Hordenine – May have fat burning effects
  • BCAAs (2g) – Reduces muscle breakdown during workouts; increases growth and repair

PreSeries LEAN is absolutely packed with extras that support fat-loss and hormonal support, as well as a (small) dose of BCAAs to prevent muscle breakdown.

We’re giving the formula a full 3 bonus points for basically being a fat-burner as well as a pre-workout in one.


PreSeries LEAN is a solid forumla, both as a pre-workout and as a fat-burner.

Although it could have added a couple extra ingredients to further enhance it as a pre-workout, it is a great supplement for anyone who wants a boost in both their workouts and fat-loss.

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