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Transparent Labs PreSeries Stim-Free Review (2022 Upd)

Michael Garrico
Published by Michael Garrico
Fact checked by Donald Christman, BHSc FACT CHECKED
Last updated: May 11, 2022

As a personal trainer, I advise many of my clients to take a pre-workout and get to their strength and fitness goals a bit faster.

But many people are either sensitive to caffeine or head to the gym later in the day. And because many pre-workout supplements rely heavily on stimulants, we had to find some alternatives.

One product that has come highly recommended from fitness trainers I know and some other colleagues is Transparent Labs PreSeries Stim-Free.

So, we got together with a few clients and our nutritionist to research and test it for a few weeks to see how well it works.

Here's what we found.

What is Transparent Labs PreSeries Stim-Free?

transparent labs preseries stimm free product

Transparent Labs Pre-Series Stim-Free is a stimulant-free pre-workout supplement that features a scientifically proven caffeine-free formula that can reduce neuromuscular fatigue. Its main ingredients are citrulline malate, beta-alanine, and branched-chain amino acids (BCAAs).

Essentially, it should help you lift heavier weights or do more reps before you start feeling your muscles turn to jelly.

One thing that stood out is that Transparent Labs has made a few changes to the formula.

Originally, it included creatine HCL, and the L-Tyrosine dose has increased from 600 mg to 1,000 mg. We were a bit surprised about removing the creatine, but boosting L-tyrosine could make up for it [1].

Suited for Men and Women

Transparent Labs Stim Free Pre-workout

Transparent Labs PreSeries Stim-Free

Ingredients Quality
5.0
Convenience
4.6
Effectiveness
4.9
Overall Score 4.8
4.8

PreSeries Benefits

woman holding a pink dumbbell and protein powder filling a spoon

To analyze the Transparent Labs Stim-Free benefits, we took a close look at three key areas.

Ingredients

Transparent Labs Stim-Free pre-workout delivers 6 grams of citrulline malate, and that has been shown to help with nitric oxide levels and improved blood flow [2].

It also contains a decent dose of BCAAs, which could help beyond muscle protein synthesis.

Studies have shown that it can also help with muscle building and boosting fat loss [3]. And then there's beta-alanine, which should help to improve your strength during training [4].

It also contains betaine anhydrous, taurine, L-tyrosine, choline bitartrate, and black pepper extract. Based on what our nutritionist had to say about the label, this seems to be a favorable formula compared to other pre-workouts.

Convenience

This stim-free pre-workout comes as a powder that you can easily mix with water in a shaker. It tastes good, and it seems to take my body about 30 minutes to feel the ingredients kicking in.

It's also great that you can take this later in the day without messing up your sleep due to high doses of caffeine that are common in pre-workouts.

But, I know quite a few people who prefer capsules that can be more convenient.

Effects On The Body

During our testing phases, every single one of our clients said that they could feel when Transparent Labs Stim-Free was kicking in. It usually takes about 30 to 40 minutes which is a good starting point to plan your timing.

We also monitored the amount of weight and number of reps before and after taking this pre-workout. In all cases, those data points increased significantly, and we measured faster muscle growth.

Does It Have Downsides?

Overall, we couldn't find much wrong with this Transparent Labs Stim-Free pre-workout.

The main thing to keep in mind is that other products often come as capsules that can be more practical to throw in your bag in the morning and then take later in the day. However, this comes at the expense of losing precision in dosing.

The other thing to keep in mind is that the lack of stimulants also means that you don't get the same mental focus that you might be used to with caffeinated supplements.

Pros
  • Transparent Labs Stim-Free helps reduce premature muscle fatigue
  • Positive feedback that it can increase muscle growth with sustained resistance training
  • Available in natural flavors that easily mix with water in a shaker
Cons
  • Some people prefer the convenience of capsules

How Does It Compare To Other Products?

We compared Transparent Labs PreSeries Stim-Free to other products like 4 Gauge, Gorilla Mode, and Transparent Labs PreSeries BULK to see how it fares.

One thing we wanted to do was check our testing results with this stim-free pre-workout to see the performance benefits we measured with other supplements that we recommend.

First of all, we looked at 4 Gauge, which has the same amount of citrulline per dose. 4 Gauge relies on L-theanine and a strong caffeine dose, and while this does make it effective to boost mental and physical activity levels, you'd want to avoid taking it later in the day.

Gorilla Mode is another product we've seen great results with. But to get the same dose of citrulline and betaine from two scoops of powder, you'd end up with a very high dose of caffeine that could make you jittery [5].

"Caffeine does have its cognitive perks — including boosting alertness, energy, and feelings of well-being — but overuse can cause a range of unpleasant side effects, including troubled sleep, jitters, irritability, and gastric distress." - Stacy Lu, Contributor at apa.org. 

And finally, we compared the test results to Transparent Labs PreSeries BULK. The formula is very similar, with the main difference being the added caffeine. While it does help with motivation, we couldn't see major differences in the test results to the non-caffeine option.

Where Can You Buy It?

You can buy this stim-free pre-workout only on the company website. I generally advise all my clients and readers to only buy from official sites as the supplement industry is full of counterfeit products.

And you simply can't afford to take risks with something you eat or drink.

Also, the official store has great bulk discounts, and it's the only place you get the money-back guarantee.

Suited for Men and Women

Transparent Labs Stim Free Pre-workout

Transparent Labs PreSeries Stim-Free

Quality Ingredients
5.0
Convenience
4.6
Effectiveness
4.9
Overall Score 4.8
4.8

Other User Reviews

man lifting a container while drinking from a jug

We pulled a few reviews from the company website to show you what other users are saying.

"Love it. I'm a skinny guy, and this has definitely helped me get stronger. I also use it when I play soccer or go for a run, and this definitely helps out and is a great product. I definitely would recommend it to others." - Rafael M.

"Best pre-workout I've ever tried. Solid ingredients and very effective results. Kicks in quickly and leaves you with no jitters." - Edmund K.

FAQs

When Should You Take Preseries Stim-Free?

You should take PreSeries Stim-Free about 30 minutes before you start your warm-up routine. The great thing about this stim-free version is that you can even take it if you're heading to the gym in the evening, as it shouldn't mess with your sleep.

Is Preseries Stim-Free Safe for Long-Term Use?

Yes, the PreSeries stim-free pre-workout is safe for long-term use. All the ingredients are classed as generally safe to take and shouldn't cause any major side effects.

Should You Invest In This PreSeries Pre-Workout?

Yes, I am recommending my clients and readers try out this product, confident in the benefits they’re most likely to experience. Whether you're sensitive to stimulants or need something to give you a more intense exercise later in the day, this is a great option.

I regularly take it for later trips to the gym and feel that it gives enough of a physical and mental energy boost to keep me going for significantly longer. I really appreciate it helping me a lot in bulking phases without the jitters I often experience with caffeinated products.

Order yours today and find out how much of a difference it can make for your workouts.

Suited for Men and Women

Transparent Labs PreSeries Stim-Free

Transparent Labs Stim Free Pre-workout
Quality Ingredients
5.0
Convenience
4.6
Effectiveness
4.9
Overall Score 4.8
4.8
Pros
  • Transparent Labs Stim-Free helps reduce premature muscle fatigue
  • Positive feedback that it can increase muscle growth with sustained resistance training
  • Available in natural flavors that easily mix with water in a shaker
  • Get the BEST PRICE until the end of May
Cons
  • Some people prefer the convenience of capsules

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