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Transparent Labs Preseries Bulk Pre-Workout Review: Our Results

Preseries BULK by Transparent Labs is a pre-workout supplement that helps you get the most out of your workouts.

Do you want to enhance your gym performance by increasing stamina, strength, and energy? Make sure to continue reading our Transparent Labs Preseries BULK Review!

Why Transparent Labs Preseries Bulk?


What makes this pre-workout so special when there are a hundred other products to choose from?

Well, first of all, Preseries Bulk only contains science-backed ingredients at optimal dosages. That's right, you won't find any useless filler ingredients in this product. Every one of the 19 ingredients contributes to helping you enhance focus, muscle pumps, and overall performance.

This is why each serving of Preseries Bulk is over 22 grams. That is more than about 99% of the pre-workouts available on the market.

Secondly, this pre-workout contains a Testosterone Support Complex of Vitamin D3, Zinc, and Boron. In combination with the many other ingredients, this makes Transparent Labs Preseries Bulk a great pre-workout for those looking to gain bulk up and gain size.

Transparent Labs Preseries Bulk pre Workout

Check out the best pre-workout of 2020

And finally, the formula offers 100% transparency. This means you won't find any proprietary blends or hidden ingredients in this product. It also doesn't contain artificial sweeteners. preservatives or coloring.

Personally, I find this important because I want to know what I am putting into my body. It's good to know that Transparent Labs takes this very seriously and live up to the name.

What To Expect

I've been using this pre-workout for a while now. I usually take one scoop about 20 to 30 minutes before my workout. Most of the times I'll take it on an nearly empty stomach because it will work a lot better from my experience.

A lot of you guys will be interested in what to expect from this pre-workout when it comes to gym performance. Let's have a quick look!

Muscle Pumps

I have to admit, Preseries Bulk has been one of the best pre-workouts I've used that increases muscle pumps. Some of the ingredients found in this product are known to increase nitric oxide.

Nitric oxide is responsible for increasing blood flow to the muscles, meaning you'll get a better pump when it is increased.

For me, a great pump is what really makes or breaks a good gym session. I've experienced many great workouts due to the fact that I had a much better pump than without this PWO.

Strength Increase

I wasn't really able to up the weights or reps even though everything was on point. But once I started using Transparent Labs Preseries Bulk it helped me break through a plateau.

It's definitely one of the better products out there when it comes to boosting strength. I think it's a combination if the various effects that help you lift more weight.

I was able to lift heavier due to the fact that I felt more focused and energized. On most excersises, I was able to squeeze out a few more reps. By doing so, it also significantly enhanced my muscle pumps.


Having a good focus during a workout is crucial. You want to make sure you are giving it your all during a gym session. This PWO helped me enhance focus and concentration. It's nothing special but for me it was very beneficial.


This pre-workout contains a moderate amount of stimulants which is just enough to get you going without causing a crash afterwards. With more energy in the tank you'll be able to increase the intensity of your workouts.

Transparent Labs Bulk Pre-Workout Ingredients

The reason why Transparent Labs Preseries Bulk is such a widely used pre-workout is because of it's science based formula.

Amongst the 19 ingredients you'll find popular compounds such as Branched chain amino acids, Citrulline Malate and Beta Alanine.

As previously mentioned, Preseries Bulk contains a Testosterone support complex of Vitamin D3, Zinc and Boron. These 3 ingredients might be able to help increase Testosterone, which plays an important role when it comes to building mass and strength.

I consider it to be one of the most advanced pre-workout formulae on today's market.

At the end of 2020, Transparent Labs changed the formula of PreSeries Bulk. The main things that shifted in the new formula are:


  • Removed Choline Bitartrate
  • Removed Macuna Pruriens 
  • Removed L-Norvaline
  • Removed Synephrine HCl
  • Removed Hordenine
  • Removed Bioperine


  • Increased 600mg N-Acetyl L-Tyrosine –> 1000mg L-Tyrosine
  • 300mg Alpha GPC
  • 50mg Theobromine
  • 30mg Infinergy (DiCaffeine Malate)
  • 25mg Astragin
Transparent Labs Preseries Bulk Ingredients
OLD Formula
Preseries Bulk Pre workout ingredients v2
NEW Formula

The formula is topped off with a small amount of Astragin. It is added to enhance the bioavailability of the other nutrients found in this pre-workout.

On the official website, you'll find detailed information about what each ingredient contributes to the formula. 

In the new formula, they removed some very powerful ingredients like hordenine, L-norvaline, and Synephrine. In my opinion, the formula became weaker and is not to be called a high stimulant pre-workout anymore.

If you're looking for a high stimulant pre-workout, make sure to check out Wrecked or STEEL AMPED AF.

Value & Price

One bag of Preseries Bulk will cost you $49.00. When you purchase multiple bags, you'll get a significant discount.

Now, I know what you are thinking – it's more expensive than the other products around.

However, you're forgetting the fact that this product has 22 different ingredients and a scoop is over 21 grams! I mean, they are packing this stuff in jumbo-sized bags, of course it's going to be a bit more expensive.

So, if you ask me…

Do you think the Transparent Labs Preseries Bulk Pre workout is worth it?

Yes, I think it is worth every penny. In my opinion, you definitely get what you pay for. They also carry a lot of other effective products such as the Transparent Labs Fat Burner.

Should You Try Transparent Labs Preseries Bulk?

I highly recommend that you guys give Preseries Bulk a try. It's become one of my favorite pre-workouts because it really gives me a great boost in the gym. 

Besides that, it contains a lot of different ingredients at optimal doses. You can tell a lot of research has gone into formulating this pre-workout. 

Unfortunately, they recently changed the formula of Preseries Bulk, making it less potent. That's why we would advise using Wrecked by Huge Nutrition instead. 

It's also worth mentioning that I don't experience any type of crash after my workouts. The moderate amount of caffeine per serving (180mg) is just enough to get me in the sweet spot without feeling fatigued afterwards.

8.4 Total Score
Transparent Labs Preseries Bulk Pre-Workout Review

  • 19 Different Ingredients
  • Backed Up By Science
  • 21 Gram Servings
  • Expensive compared to other pre-workouts
User Rating: 4 (9 votes)

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Kyle is passionate about bodybuilding and fitness. He has been training for over two decades and has trained and coached many people in the past. Kyle shares his experience on various supplements, health, and bodybuilding topics. He is a certified health coach and is the CEO of SupplementsReviewer.

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