Transparent Labs Bulk Pre-Workout Review (2024) - Lift Vault (2024)

Bulk Pre Workout by Transparent Labs is a pre-workout supplement designed to be taken by athletes during a bulking phase.

To help support a bulking cycle, it includes the ingredients vitamin D3, boron citrate, and zinc for testosterone support. This is rather unique for a pre-workout, as most do not contain ingredients for purposes other than increasing energy, focus, and motivation.

Transparent Labs was nice enough to send me some samples of their products to try out and review for you all. This will be the first in a series of reviews of some of their products.

I would recommend Bulk Pre Workout as a great daily pre-workout choice. It is also a good choice for days when you’re taking a break from more high stim pre-workouts if you take those. It’ll deliver solid energy and motivation in the gym without some of the side effects that can come along with more extreme pre-workouts.

Bulk is even included in our list of the best powerlifting supplements. It’s truly a pre-workout that everyone can enjoy and benefit from.

Best Low Caffeine + Nutrition Support

BULK Pre Workout - Transparent Labs

With just over 200 mg of caffeine, BCAAs, Vitamin D3, and Zinc, BULK is a great choice if you're looking for a normal amount of caffeine + extra nutritional support.

Discount codes:

LV10 = 10% off Transparent Labs

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Lift Vault earns a commission if you click this link and make a purchase at no extra cost to you.

Table of Contents

  • 1 My Experience with Bulk Pre-Workout
    • 1.1 Summary
    • 1.2 Details
  • 2 Where to Buy Transparent Labs Bulk Pre Workout
  • 3 Ingredients Label
    • 3.1 Citrulline Malate 2:1 – 8 grams
    • 3.2 Beta Alanine – 4 grams
    • 3.3 Betaine Anhydrous – 2.5 grams
    • 3.4 Taurine – 1.3 grams
    • 3.5 L-Tyrosine – 1,000 mg
    • 3.6 L-Theanine – 200 mg
    • 3.7 Caffeine Anhydrous – 200 mg
    • 3.8 Theobromine – 50 mg
    • 3.9 BioPerine – 5 mg
    • 3.10 Vitamin D3 – 3,000 IU
    • 3.11 Zinc AAC – 30 mg
    • 3.12 Boron Citrate – 5 mg

My Experience with Bulk Pre-Workout


I enjoyed Bulk Pre Workout way more than I was expecting to. I was skeptical of the 180 mg caffeine dose and was wondering if this pre workout would do anything for me. After all, I’d been testing out some heavy hitters like 1’3 Volt and Hooligan – would this be able to compete?

The answer: no, not exactly, but I like Bulk for different reasons. It’s a great pre workout for daily usage. I can take this regularly and not worry about building up a wild caffeine tolerance or putting my brain through the neurological wringer and feeling like crap.

As a result, Bulk is a versatile pre-workout that works well for a variety of use cases.

In fact, it appears on the following “best of” lists:

  • Best Pre-Workout for Beginners
  • Best Pre-Workout for Teens
  • Best Pre-Workout for Cardio
  • Best Pre-Workout for MMA

If you’re also considering Transparent Labs’ Lean Pre-Workout, check out my Lean vs. Bulk Pre-Workout comparison.


Within 20 minutes I could feel the beta alanine start to kick in. With over 4 grams of beta alanine, they’re hard to miss.

By 30 minutes or so I could feel the caffeine start to deliver. The feeling was not overwhelming, but was noticeable. From here, a blend of energy and motivation continued to build up to the 60 minute mark or so, where it plateaued for a while.

As the label suggests, you’re not going to get knocked over the head with any crazy stimulants with Bulk pre workout. Instead, a thoughtful blend of properly dosed ingredients (caffeine, L-Theanine, synephrine, hordenine, choline) come together to form a very, very solid energy and motivation package.

I took this in the morning after a light breakfast and this definitely helped me power through a quick 60 minute workout while still getting all of my work in.

Side Effects & Comedown

There was no comedown whatsoever from Bulk. No negative side effects were noted. It lasted for about two hours before fading out nicely.

This is absolutely something I’d feel comfortable taking every day. It’s a solid, functional pre workout and a great choice for something to take in between hardcore pre workout days.

Where to Buy Transparent Labs Bulk Pre Workout

Bulk Pre Workout is only available directly from Transparent Labs. Shipping was quick and hassle free.

Use discount code LV10 to bring the price per tub down to $44, or $1.47 per serving. Not bad at all for what you’re getting.

Ingredients Label

Transparent Labs upgraded the ingredients in Bulk Pre-Workout in 2022. You can see the latest ingredient panel below.

One thing that really impressed me is that almost all of the ingredients are included at their clinical dose. There is very little window dressing on this label, but I suspect there is still some.

I will also call out that it’s great to see a full 30 servings in each tub. So many pre-workouts are opting for 20 full servings per tub, which hurts the wallet a bit.

It’s also worth calling out that Bulk does not contain any artificial sweeteners (if you don’t count stevia as artificial) and overall is definitely a clean pre-workout. So if you’re looking for one of the best pre-workouts without sucralose or artificial sweeteners, definitely consider Bulk from Transparent Labs.

Transparent Labs Bulk Pre-Workout Review (2024) - Lift Vault (2)

Citrulline Malate 2:1 – 8 grams

Citrulline malate is included as a pump and power ingredient, helping improve endurance, reduce fatigue, and increase the production of nitric oxide.

8 grams is above a clinical dose.

Beta Alanine – 4 grams

Regular usage of beta alanine has been shown to increase power output. That means it must be taken daily, not just with a pre-workout. Nonetheless, 4 grams is a hefty dose.

3 grams to 4 grams is a clinical dosage for beta alanine, so Bulk is coming in on the upper end of the scales here. Like I said in my experience above – you’ll feel the tingling!

Betaine Anhydrous – 2.5 grams

Betaine is included to help increase your power output and reduce fatigue. However, research is pretty inconsistent around these claims.

2.5 grams is a solid dose of this ingredient. (More info:Examine)

Taurine – 1.3 grams

Taurine, when taken alongside BCAAs, helps reduce next-day muscle soreness (DOMS) after a workout.

1.3 grams is a solid dose, right in line with what is typically seen in pre workouts.

L-Tyrosine – 1,000 mg

This is one of the biggest upgrades to the latest Bulk ingredient profile. The old version of Bulk used N-Acetyl L-Tyrosine (NALT), which is less bioavailable.

Now Bulk contains pure L-Tyrosine at a nice 1,000 mg dosage.

L-Theanine – 200 mg

L-theanine can work synergistically and help reduce some of the negative side effects of high caffeine dosages like jitters.

200 mg is a fine dose of L-Theanine, lowered down from 360 mg in previous version of Bulk to reduce the calming effects.

Caffeine Anhydrous – 200 mg

Not much to say here – it’s caffeine.

This is upgraded from 180 mg to a more standard 200 mg dosage.

Theobromine – 50 mg

BioPerine – 5 mg

BioPerine is included for ingredient absorption.

5 mg is standard for a supplement like this.

Vitamin D3 – 3,000 IU

Vitamin D3 has been shown to create small, but statistically significant increases in testosterone among men that at Vitamin D deficient (source).

It is worth noting that daily intake is needed for these effects.

Zinc AAC – 30 mg

Zinc helps support optimal levels of testosterone, so regular daily supplementation between 10 mg and 40 mg is important. It can also be lost in sweat, so this is especially important for athletes.

Like Vitamin D3, zinc supplementation will only increase testosterone production in individuals that are already deficient.

Boron Citrate – 5 mg

Boron has been shown to increase amounts of free testosterone in males. The two studies cited used daily doses of 6 mg and 10 mg, so 5 mg is probably enough, especially if supplemented with natural sources like apples, coffee, and nuts.

Transparent Labs Bulk Pre Workout Review



Bulk pre workout by Transparent Labs is an all around solid pre workout for individuals seeking a good pre workout for daily usage. It has a variety of useful ingredients for promoting muscle growth, but most of these ingredients you should be getting from your everyday diet.


  • Good for daily usage.
  • No negative side effects.
  • Solid energy and motivation effects.


  • Effects may be too mild for those seeking an “extreme” pre workout.
  • Some ingredients are close to “window dressing” status, like mucuna pruriens or hordenine.
Transparent Labs Bulk Pre-Workout Review (2024) - Lift Vault (3)

About Kyle Risley

Kyle Risley founded Lift Vault in 2016 to make finding great powerlifting programs easier. Since then, the site has grown to include hundreds of programs for strength, bodybuilding, Olympic weightlifting, and more. He currently lives in Massachusetts and continues to compete in powerlifting.

Transparent Labs Bulk Pre-Workout Review (2024) - Lift Vault (2024)


Does transparent labs bulk have testosterone? ›

Each scoop of Bulk Black packs over 17 grams of proven nitric oxide boosters, hard-hitting nootropics, natural testosterone-supporting ingredients, and muscle fortifiers dosed according to scientific evidence, so you can bring the noise every time you walk into the gym.

What's the strongest pre-workout on the market? ›

Transparent Labs Bulk Black earns our pick as the strongest pre-workout overall. It includes 275-325 milligrams of caffeine, 75 milligrams of dicaffeine malate, and clinically-dosed ingredients aimed to improve energy, enhance blood flow, and build muscle.

Does transparent labs bulk pre-workout have creatine? ›

But, the product is free from artificial sweeteners and colors, which may account for the bitter taste reported. Additionally, buyers should be aware BULK does not contain creatine, an ingredient some athletes seek in a pre-workout supplement.

Is transparent lab overpriced? ›

If you're willing to pay $1.99 per serving, then we think Transparent Labs protein is worth it. That's not the highest cost we've seen in a protein powder, and it's on par for the higher-end products that don't contain artificial ingredients, but there are more budget-friendly options.

Does transparent lab bulk make you gain weight? ›

Transparent Labs LEAN is formulated to help support weight loss, while Transparent Labs BULK is formulated to support muscle growth.

Do you get bigger with pre-workout? ›

"Pre-workout supplementation may enhance muscle pumps and growth when taken before a workout," says Elmardi. "By providing your body with enough nutrition before exercise, you'll see bigger and stronger muscles while working out."

Can you get hard on pre-workout? ›

Yes, many pre-workouts contain ingredients designed to increase blood flow to the muscles for improved endurance and performance. This increased blood vessels and flow can also positively impact sexual performance by improving blood flow to the sexual organs.

Does pre-workout actually make you stronger? ›

Summary – Pre Workouts Boost Strength

Pre workout supplements have the ability to boost endurance, time to exhaustion and mental focus. And as more and more research is made available we are finding an increasing number of studies showing that they can enhance strength and power too.

Is it OK to take pre-workout regularly? ›

If you work out a lot, though, you probably shouldn't take pre-workout more than once a day, and always be sure to carefully follow dosage instructions. And remember: You can't out-supplement a bad diet. The best way to get energy for your workout is by eating healthy foods that are rich in vitamins and nutrients.

Does pre-workout have downsides? ›

Pre-workout formulas are popular in the fitness community due to their effects on energy levels and exercise performance. However, you may experience side effects, including headaches, skin conditions, tingling, and stomach upset.

Is pre-workout more effective than creatine? ›

Which is better: creatine or pre-workout? One supplement isn't necessarily better than the other. Creatine is a single ingredient that can act as an ergogenic aid, while pre-workout contains multiple ingredients known to act as ergogenic aids. It all depends on what you're looking to get out of your supplements.

Does transparent labs bulk break a fast? ›

A pre-workout supplement that's sweetened only with stevia or monk fruit and has no insulinogenic amino acids (e.g. BCAAs), such as Transparent Labs LEAN Pre-Workout, should not stimulate an insulin response nor break your fast.

How much caffeine is in transparent labs bulk? ›

Transparent Labs BULK can potentially help increase testosterone levels with its vitamin D, zinc, and boron. The smaller dose of caffeine here (180mg) can provide a little boost in alertness without causing unwanted jitters.

What are the benefits of transparent labs lean? ›

Optimized Strength and Lean Muscle Growth: Lean Pre-Workout's powerful formula, including 6,000 mg of Citrulline Malate 2:1 and 1,000 mg of Acetyl L-Carnitine HCl, enhances blood flow, boosts strength, and promotes lean muscle growth, making it an ideal choice for those seeking both power and physique improvements.

What is the No 1 testosterone booster? ›

Vitamin D3, Zinc, and Magnesium are essential nutrients that support overall health and testosterone production. Korean Red Ginseng Extract and Nettle Leaf Extract offer comparable efficacy to other T booster supplements in elevating testosterone levels.

Does lab work show testosterone? ›

A. Doctors usually order a blood test to measure total testosterone. A total testosterone lab test measures both "free" (unbound) testosterone and the amount of hormone bound to blood proteins. Normal testosterone levels are between 300 to 1,000 nanograms per deciliter (ng/dL).

What labs to order for low testosterone? ›

Your doctor may order these blood tests:
  • Total testosterone level. This test should be done at two different times on samples taken before noon. ...
  • Luteinizing hormone (LH). This test is done to help find the cause of a Low-T level. ...
  • Blood prolactin level. ...
  • Blood hemoglobin or Hgb.

What is the strongest testosterone for bodybuilding? ›

The seven best testosterone supplements are:
  • #1 Testosil—Best Testosterone Supplement Overall.
  • #2 Testodren—Best For Enhanced Body Composition.
  • #3 Xwerks RISE—Best For Increased Energy.
  • #4 Testo Prime—Best For Mood Promotion.
  • #5 Prime Male—Best For Libido Support.
  • #6 TestRX—Best For Lean Muscle Growth.
Feb 7, 2024


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