Transparent Labs Bulk Black Review: Is This Strong Enough?

by Nader Qudimat
Updated February 18, 2024
Pre Workout
Serving Size
Reformulated to be stronger
High energy pre-workout
Well rounded formula 

Bottom Line

Transparent Labs Bulk Black Pre-Workout is a supplement designed for those who crave a stronger "kick" before hitting the gym.

It's marketed as a hard-hitting, clinically dosed pre-workout supplement with 100% formula transparency.

For people like myself, I find this pre-workout perfect to be a strong daily type of driver. 

Meaning I can use it and still have a great workout without the side effects of a much stronger pre-workout. 

The price is fair but you can drop it down even further by using the discount code ' FITFREK '.


If you're on the hunt for a pre-workout supplement that packs a punch, you may have seen Transparent Labs Bulk Black.

This pre-workout has been one of the breakthroughs for Transparent Labs because they don't usually make this type of pre-workout. 

(See Is Transparent Labs Legit?)

They normally have their pre-workouts a little more moderate with the energy. 

For example, Bulk and Lean both have around 220mg of caffeine along with theanine. 

But Bulk Black takes it up to the next level. 

This pre-workout has around 300mg of caffeine, coming from multiple sources. 

First, we'll dive into my review then we'll break down the label and the FAQ's about this pre-workout...

My Bulk Black Experience

The original Bulk has always been my trusty pre-workout for those days when I want to take a breather from the stimulant roller coaster, yet still need that gentle caffeine nudge to power through my workouts.

It's like a whisper in the ear, just enough to keep you moving without fearing a caffeine-induced frenzy.

But then, there's Bulk Black.

This pre-workout is a whole different beast.

It doesn't just whisper; it takes things to the next.

The energy surge hits hard within minutes, and it's fast.

I can feel it coursing through your veins almost instantly after I take a sip.

Packing a solid 300mg of caffeine stands out in the Transparent Labs lineup.

It's like the family's big brother, flexing its muscles and showing off its strength.

But here's the twist:

Despite the hard-hitting energy, there's no crash.

It's like riding a high-speed train that slows smoothly as it approaches the station.

If you're all about the pump, Bulk Black might leave you wanting more.

The pump effects are decent, not extraordinary, but they do the job.

It increases blood flow and all that, nothing crazy, but it's enough to keep you going.

The show's real star with Bulk Black, though, isn't just its formula.

It's the clean, natural sweetness.

It's like sipping on a refreshing, guilt-free elixir that also happens to supercharge your workout.

It's a clean experience from start to finish. 

You might like: Prebiotic Green vs Athletic Greens


Bulk Black by Transparent Labs

If you want a daily driver pre workout with 300mg caffeine, featuring a fully transparent and legit label, then consider this limited edition pre workout from Transparent Labs, Bulk Black.

  • Long lasting energy
  • Two forms of caffeine
  • Increases focus and mental functions
Ingredients: 8g Citrulline Malate, 4g Beta-Alanine, 2.5g Betaine Anhydrous, 1.3g Taurine, 1g L-Tyrosine, 300mg AlphaSize (Alpha-GPC), 180mg Sodium, 130mg Potassium, 50mg SenActiv, 10mg Zinc, 5mg Vitamin B6, 5mg Bioperine (Black Pepper Extract), 3mg Boron, 100mcg Vitamin B12
Stimulants: 275mg Natural Caffeine, 200mg L-Theanine, 100mg Theobromine, 75mg Infinergy (Dicaffeine Malate)
Discount code: FITFREK
FitFrek earns a commission if you click this link and make a purchase, at no additional cost to you.

Transparent Labs BULK Black is a unique blend that's as clean as it gets.

Sweetened with stevia, it skips the sugars and carbs, making it a calorie-free companion for your workouts.

And if you're wondering about protein or fat, there's none of that either.

The formula is a powerhouse of 17 ingredients, kicking off with five inactive vitamins and minerals.

You've got your Vitamins D, B6, and B12, along with sodium and potassium - essential electrolytes that keep your body in balance.

But the real stars of the show are the 12 active ingredients.

We're talking citrulline malate, beta-alanine, betaine anhydrous, taurine, L-tyrosine, AlphaSize Alpha-GPC, caffeine anhydrous, L-theanine, theobromine, BioPerine, Infinergy di-caffeine malate, and boron.

These are the game-changers, the ones that deliver the physical and mental benefits you can feel.

Citrulline Malate (8g)

Citrulline malate is a combination of the amino acid citrulline and malate, an apple derivative.

It's known for its ability to increase nitric oxide production, which can improve blood flow, delay muscle fatigue, and enhance strength and aerobic performance [1, 2, 3, 4

Citrulline is also found in some foods, like watermelon.

In the body, citrulline plays a key role in the urea cycle, which is a process that helps your body eliminate harmful nitrogen waste substances. [5

In terms of its properties, citrulline is known for its ability to increase nitric oxide production in the body.

Nitric oxide is a gas that expands blood vessels and improves blood flow. 

By boosting nitric oxide production, citrulline can enhance exercise performance, reduce muscle soreness, and speed up recovery time [6, 7].

In addition to its performance-enhancing benefits, citrulline also has several other potential health benefits.

It may improve heart health, boost immune function, and even have potential benefits for people with diabetes and erectile dysfunction.

In Bulk Black, citrulline is combined with malate to form citrulline malate.

This combination is believed to enhance the production of nitric oxide even further, leading to even greater performance benefits.

(Related: How long does pre-workout take to kick in?)

Beta-Alanine (4g)

Beta-alanine is an amino acid that's used by your body to produce carnosine, a substance that helps muscle endurance during high-intensity exercise. [8, 9]

It can delay muscular fatigue, increase overall muscle strength, and improve muscle endurance. [10, 11, 12]

It's a non-essential amino acid that plays a crucial role in muscle endurance during high-intensity exercise.

Unlike other amino acids, it's not used by our bodies to synthesize proteins.

Instead, it helps to produce carnosine, a molecule that buffers acid in muscles, thus delaying the onset of muscle fatigue and allowing for increased performance and physical capacity.

During periods of strenuous exercise, lactic acid builds up in the muscles, leading to an acidic environment that can cause muscle fatigue and hinder performance.

Beta-Alanine counteracts this by increasing carnosine concentrations in the muscles, which then helps buffer the acid, reduce muscle fatigue, and enhance athletic performance.

While Beta-Alanine is generally safe for consumption, it's worth noting that it may cause a harmless side effect known as paresthesia, a tingling sensation on the skin.

This sensation is temporary and usually subsides within an hour of consumption.

In conclusion, Beta-Alanine is a valuable supplement for athletes and fitness enthusiasts looking to enhance their performance and push their physical limits.

Its ability to buffer muscle acid and delay fatigue can be a game-changer in high-intensity workouts.

Now, you might be wondering, "Is this stuff safe?".

The answer is yes.

In fact, a bunch of studies, like ones published in the Journal of the International Society of Sports Nutrition and Frontiers in Physiology, have shown that Beta-Alanine can be a real game-changer for athletic performance, especially during high-intensity, short-duration exercises.

But here's a heads up: Beta-Alanine might cause a tingling sensation on the skin.

It's totally harmless and usually goes away within an hour.

It's just Beta-Alanine's way of saying "Hello, I'm here!", or a way for you to feel like Spider-Man.

BetaPure Betaine Anhydrous (2.5g) 

Betaine, or trimethylglycine (TMG), is a potent ergogenic aid.

A daily dose of 2.5 grams can boost physical performance, including power and endurance. [13]

Betaine acts as a methyl donor, aiding in metabolic processes and optimizing energy production. [14]

It also helps balance homocysteine levels, reducing cardiovascular disease risk. [15]

Additionally, Betaine is an osmolyte, enhancing cell hydration and nutrient access, and protecting against metabolic stress. [16]

Research shows betaine supplementation can improve strength, power, and body composition. [17]

A 2013 study found that a daily dose of 2,500 milligrams led to significant muscle gain and fat loss over one and a half months.

Here's an overview of the benefits that betaine offers:

  • Betaine, also known as trimethylglycine (TMG), enhances physical performance.
  • Betaine acts as a methyl donor, aiding in metabolic processes and energy production.
  • Betaine helps balance homocysteine levels, reducing cardiovascular disease risk.
  • As an osmolyte, it enhances cell hydration and nutrient access.
  • Research shows betaine supplementation can improve strength, power, and body composition.

So really, Betaine is a valuable supplement for overall health and physical performance enhancement.

Taurine (1.3g)

Taurine is a versatile supplement ingredient, offering benefits from improved hydration to enhanced mitochondrial efficiency, dopamine upregulation, and body fat browning. 

Like betaine, taurine is an osmolyte, capable of inducing cellular hyperhydration. [1819]

This process enhances cellular-metabolic efficiency and resilience to heat stress.

A single 1,000-milligram dose of taurine, taken before exercise, can significantly boost athletic endurance.

Taurine also functions as a powerful antioxidant and supports calcium signaling in muscle tissue, optimizing athletic performance and preventing cramps. [20, 21]

In the brain, taurine mimics a neurotransmitter called gamma-aminobutyric acid (GABA), which has calming and anti-inflammatory effects on neurons. [22]

It also promotes mitochondrial biogenesis in the brain, enhancing energy production for brain cells.

Furthermore, taurine can upregulate dopamine production and signaling, aiding focus and motivation during workouts.

Taurine also aids in fat loss and muscle building.

It can increase the body's proportion of brown adipose tissue (BAT), a type of fat tissue rich in mitochondria.

Taurine induces the browning of fat, converting white adipose tissue (WAT) into BAT.

This process increases caloric burn through non-shivering thermogenesis (NST).

Taurine can also inhibit the growth of new WAT cells while promoting the formation of new BAT.

This can improve blood lipids and blood glucose, mitigating some harmful effects associated with excess body fat.

Given that taurine is conditionally essential, with metabolic requirements increasing with workout intensity, gym enthusiasts can benefit from taurine supplementation.

The dose in Bulk Black is 1.3g, around the standard for minimum dosing, offering more benefits as taurine effects are dose-dependent.

Tyrosine (1g)

Tyrosine is a standout pre-workout ingredient for two main reasons:

Firstly, tyrosine is a precursor to crucial neurotransmitters like dopamine, adrenaline, and noradrenaline.

Supplementing with tyrosine can enhance focus, motivation, and energy, while also boosting your body's fat-burning rate.

Secondly, tyrosine supports thyroid function. [23, 24]

It's a precursor to the body's primary thyroid hormones, triiodothyronine (T3) and thyroxine (T4). [25]

This is particularly beneficial for gym enthusiasts, as intense dieting and strenuous exercise can stress the thyroid, leading to an imbalance in stress and thyroid hormones.

An additional benefit of tyrosine, particularly for those experiencing sleep deprivation, is its ability to restore cognitive function.

In fact, research suggests that tyrosine is more effective than caffeine at improving cognitive function during periods of sleep deprivation.

AlphaSize Alpha-GPC (300mg)

Alpha-GPC, or Alpha-glycerophosphocholine, is a phospholipid rich in choline, an essential nutrient that aids in maintaining cell membranes and is crucial for synthesizing acetylcholine, a neurotransmitter that regulates brain function and muscle control. [26, 27]

Alpha-GPC enhances the processing of acetylcholine in the body, ensuring optimal choline yield. [28]

Alpha-GPC is superior to other forms of choline like choline citrate or choline bitartrate in boosting acetylcholine production.

Its lipid content makes it easier for cells to absorb, thus more effectively increasing acetylcholine production.

This makes Alpha-GPC a more beneficial form of choline.

There's a reason why we keep saying this can help enhance the mind-to-muscle connection:

Alpha-GPC can enhance the "mind-muscle connection," a focus on muscle contractions during exercise that has been shown to yield better results.

It increases acetylcholine levels in the frontal cortex of the brain, which controls motor function and attention management.

This could lead to improved focus and a better mind-muscle connection during workouts.

Alpha-GPC also has potential strength-boosting and growth hormone-raising effects.

Studies have shown that it can increase strength and power in resistance training. A dose of 600mg of Alpha-GPC resulted in a larger increase in peak growth hormone and a 14% increase in bench press force.

Another study showed that Alpha-GPC increased force in mid-thigh pulls, suggesting it can boost lower body force production.

Interestingly, lower doses of Alpha-GPC have also been found effective.

A study comparing different dosages found that a 250mg dose resulted in significantly greater power in a jump test and a 132% increase in serum choline.

This suggests that lower doses of Alpha-GPC may still be effective and possibly even preferred.

L-Theanine (200mg)

Does 300 milligrams of caffeine seem a bit much?

Don't worry, theanine is here to smooth things out.

L-theanine, a natural amino acid found in the Camellia sinensis plant, the source of white, green, oolong, and black teas, has a calming effect on the brain.

Acting as a neurotransmitter, it reduces anxiety by inhibiting neurotransmission without causing sedation.

The magic happens when theanine and caffeine come together.

This dynamic duo enhances mood and cognition, outperforming the effects of either ingredient alone.

They work in tandem to improve mental accuracy, reduce fatigue, speed up reaction times, and boost numerical working memory. [29, 30]

They also enhance the ability to judge written texts and increase alertness.

Theanine is particularly beneficial for stressed individuals, increasing attention and reducing reaction time. [31]

It's also known to improve sleep quality and reduce resting heart rate by upregulating GABA, a calming neurotransmitter that inhibits neurotransmission. [32]

And if you're looking to reduce cortisol, Transparent Labs Vitality is a great choice.

It contains KSM-66 (ashwagandha), known for its cortisol-reducing properties.

Caffeine Anhydrous (275mg)

Caffeine, the world's most popular legal stimulant, is consumed daily by a vast majority of American adults.

Its ability to stave off fatigue makes it a go-to for those with busy schedules. 

What sets caffeine apart is its ability to cross the blood-brain barrier, a feat most nutritional supplements can't achieve. [33]

This unique capability allows caffeine to significantly influence the central nervous system. [34]

Like its close relative, theobromine, which is also present in Bulk Black, caffeine works by blocking the action of adenosine.

Adenosine is a nucleotide that accumulates in the brain during wakefulness, gradually increasing mental fatigue.

Fatigue is a common issue for those trying to lose weight, as calorie restriction can significantly reduce energy levels. [35, 36]

This is why dieters often consume large amounts of tea or coffee.

It's also why caffeine is a favored ingredient in fat-burning supplements.

Caffeine can also inhibit phosphodiesterase, an enzyme that breaks down cyclic adenosine monophosphate (cAMP), a messenger molecule that signals cells to burn more glucose and fatty acids for energy.

By inhibiting phosphodiesterase, caffeine raises cAMP levels, which in turn speeds up your metabolism, leading to more calories burned throughout the day.

What's more, caffeine is particularly effective at accelerating fat burning.

Animal studies have found that caffeine supplementation can increase the body's rate of fat-burning by up to 50%.

So, not only does caffeine keep you alert, but it also helps you burn fat more efficiently.

Theobromine (100mg)

Theobromine, like caffeine, belongs to the methylxanthine class and has stimulant, bronchodilatory, and vasodilatory effects.

It works similarly to caffeine by inhibiting phosphodiesterase, leading to increased cyclic adenosine monophosphate (cAMP) levels. [37]

This results in increased caloric expenditure by boosting mitochondrial function and cellular energy production.

However, theobromine differs from caffeine in its primary target.

While caffeine primarily stimulates the central nervous system, theobromine focuses on relaxing smooth muscle, which lines the inside of blood vessels.

This means theobromine can reduce blood pressure, unlike caffeine, which is known to increase it.

Interestingly, combining theobromine with caffeine can counteract caffeine's effect on blood pressure, making this a smart ingredient pairing.

You get the benefits of caffeine with less of the downside.

Additionally, theobromine can support cardiovascular health by optimizing nitric oxide production and function. [38]

Infinergy (Dicaffeine Malate) (75mg)

Infinergy, also known as dicaffeine malate, is the third source of caffeine in our mix.

It's essentially caffeine molecules bound to malic acid, which slows down the caffeine's activation time.

This process results in a longer-lasting energy curve and less of a crash.

You still get the stimulant properties of caffeine, but the ride is much smoother, especially when paired with theanine.

Dicaffeine malate is about 73-75% caffeine by mass, yielding approximately 75mg of actual caffeine per serving.

It's a longer-acting form of caffeine compared to caffeine anhydrous due to the chemical binding of the caffeine molecule to malic acid, which delays digestion and absorption.

This slower rise in caffeine blood levels and lower peak level means a less harsh comedown.

Stacking malate with anhydrous gives you a quick energy boost with extended action and a gentler withdrawal.

Aside from the difference in timing, di-caffeine malate provides the usual effects of caffeine.

This adds about 25 milligrams more actual caffeine, bringing our total to aroudn 300 milligrams, not counting the 50mg of thebromine.

Bioperine (5mg)

Bioperine, derived from black pepper extract, significantly improves the absorption of the nutrients in Bulk Black.

By enhancing nutrient bioavailability, Bioperine ensures that you get the maximum benefit from each ingredient in the pre-workout, making the supplement more effective overall.

Boron (3mg)

Boron has been included for its benefits in bone health and cognitive function.

This mineral plays a crucial role in strengthening bones and enhancing mental sharpness, making it a valuable addition for those looking to support their physical and mental health through rigorous training routines.

Sodium (180mg) and Potassium (130mg)

Sodium and Potassium are essential electrolytes that help maintain fluid balance and support muscle function.

Their inclusion in Bulk Black ensures that you stay hydrated and that your muscles work efficiently, which is vital for endurance and performance during workouts.

Zinc (10mg), Vitamin B6 (5mg), & Vitamin B12 (100mcg)

The formula now includes Zinc, Vitamin B6, and Vitamin B12, which support immune function, energy metabolism, and neurological health, respectively.

Zinc helps keep your immune system strong, Vitamin B6 aids in energy production and metabolism, and Vitamin B12 is crucial for maintaining energy levels and supporting brain health.

Together, these additions ensure that your body is well-supported for both physical and mental demands.

BULK Black vs BULK

In the comparison between BULK Black and BULK, notable differences in their formulations are evident, impacting their effectiveness and suitability for various fitness goals:

Citrulline Malate: Both BULK Black and BULK are formulated with 8g of Citrulline Malate, supporting enhanced blood flow and improved workout performance by boosting nitric oxide production.

Betaine Anhydrous: Both supplements include 2.5g of Betaine Anhydrous, aiding in muscle strength and power, underscoring their commitment to enhancing physical performance.

Caffeine: BULK Black ramps up the energy with 350mg of total caffeine (275mg of natural caffeine plus 75mg from Infinergy DiCaffeine Malate), compared to BULK's 200mg. This adjustment positions BULK Black as the go-to for those seeking a more intense energy surge.

Theobromine: BULK Black has 100mg theobromine, vs the 50mg theobromine that's in the original BULK. Theobromine will help elevate mood and provide a nice smooth source of energy. 

Theanine: Each formula incorporates 200mg of L-Theanine, balancing the stimulant effects of caffeine to provide focused energy without the jitters, ensuring both supplements offer a smooth energy curve.

Boron Citrate: BULK Black includes 3mg of Boron Citrate, a component also present in BULK. Boron supports bone health and cognitive function, adding an extra dimension to BULK Black's comprehensive approach to pre-workout supplementation.

These distinctions highlight BULK Black's positioning as a more potent option for those desiring a stronger pre-workout boost, while BULK remains a solid choice for balanced energy and performance enhancement.

BULK Black vs LEAN

Comparing BULK Black and LEAN, the differences are more clear:

  • Citrulline Malate: BULK Black contains 8g of citrulline malate, while LEAN contains a lower amount at 6g.

  • BCAA: Unlike BULK Black, LEAN contains 2.5g of BCAAs, which can aid in muscle growth and recovery.

  • Beta Alanine: BULK Black contains 4g of beta alanine, while LEAN contains a lower amount at 2g. Beta alanine can help improve athletic performance and exercise capacity.

  • Acetyl L-Carnitine HCl: LEAN contains 630mg of Acetyl L-Carnitine HCl, an ingredient not found in BULK Black. This compound can help the body produce energy and is important for heart and brain function.

  • Choline Bitartrate: LEAN contains 500mg of choline bitartrate, another ingredient not found in BULK Black. Choline is an essential nutrient that supports various bodily functions, including cellular growth and metabolism.

  • Caffeine: BULK Black contains 275mg of caffeine anhydrous, while LEAN contains a slightly lower amount at 180mg.

  • BioPerine: LEAN contains 5mg of BioPerine, an ingredient also in BULK Black. BioPerine is a black pepper extract that can enhance the absorption of other nutrients.

Bulk Black vs Pre Kaged Elite

Transparent Labs Bulk Black Pre-Workout and Pre-Kaged Elite are both high-quality pre-workout supplements designed to enhance your gym performance.

However, they differ in their ingredient profiles, which may influence their effects and suitability for different individuals.

Caffeine Content

Transparent Labs Bulk Black Pre-Workout contains 300mg of caffeine, which is a potent stimulant that can enhance focus and energy levels.

On the other hand, Pre-Kaged Elite packs a slightly higher caffeine content of 388mg, which may provide a stronger energy boost.

Amino Acids

Both pre-workouts contain L-Citrulline, an amino acid known for its ability to improve blood flow and reduce muscle fatigue.

However, Pre Kaged Elite contains a whopping 10,000mg of L-Citrulline, which is significantly higher than the amount typically found in pre-workouts.

Bulk Black also contains L-Theanine, an amino acid that promotes relaxation and can help take the edge off the stimulant effects of caffeine.

Unique Ingredients

Transparent Labs Bulk Black Pre-Workout contains Bioperine, a compound that enhances nutrient absorption, potentially increasing the effectiveness of the other ingredients in the supplement.

On the other hand, Pre Kaged Elite contains unique ingredients like BetaPower (Betaine Anhydrous) and Carnipure (L-Carnitine Tartrate), which are known to enhance power output and reduce exercise-induced muscle tissue damage, respectively.

Creatine Content

Bulk Black doesn't contain creatine, a compound that enhances strength and power output.

However, Pre Kaged Elite contains two forms of creatine: Creatine Monohydrate and Creatine Nitrate, which may provide a more sustained release of creatine into the body.

Stimulant Profile

Transparent Labs Bulk Black Pre-Workout contains three sources of caffeine for a sustained energy release, including Infinergy (dicaffeine malate), which provides a smoother energy curve with less crash.

Pre Kaged Elite, on the other hand, sources its caffeine from PurCaf, a patented extraction process from organic green coffee beans, and AmaTea, a blend of caffeine and polyphenol antioxidants.

So the bottom line: both pre-workouts are packed with potent ingredients designed to enhance your workout performance.

Your choice between the two may depend on your specific fitness goals, tolerance to stimulants, and preference for certain ingredients.

Who Should Buy BULK Black Pre-Workout?

If you're someone who's serious about their fitness and looking to take your workouts to the next level, BULK Black Pre-Workout could be a game-changer for you.

Here's why:

  1. Gym Athletes: Whether you're a bodybuilder, an athlete, or just someone who enjoys a good workout, BULK Black can help you push past your limits. Its blend of ingredients is designed to enhance your performance, increase your endurance, and speed up your recovery.

  2. Health-Conscious Users: If you're mindful of what you put into your body, you'll appreciate BULK Black's clean formula. It's free of artificial sweeteners, coloring, and preservatives, and it's sweetened with stevia, a natural sweetener.

  3. People Looking For Better Focus: The inclusion of ingredients like AlphaSize Alpha-GPC, caffeine anhydrous, and L-theanine means that BULK Black can help enhance your mental focus during workouts. This can be particularly beneficial if you engage in exercises that require a high level of concentration, like yoga or pilates.

  4. Those Looking for a Calorie-Free Supplement: BULK Black is calorie-free, making it a great choice if you're watching your caloric intake or trying to lose weight.

Who Shouldn't Buy BULK Black Pre-Workout?

While BULK Black Pre-Workout is a high-quality supplement, it's not for everyone. Here's who might want to think twice:

  1. People Sensitive to Caffeine: BULK Black contains around 300 of caffeine, with multiple forms of caffeine. If you're sensitive to caffeine or other stimulants, you might experience side effects like jitteriness, insomnia, or rapid heartbeat.

  2. Pregnant or Nursing Women: As with most dietary supplements, if you're pregnant or nursing, it's best to consult with a healthcare professional before using BULK Black.

  3. Those with Certain Medical Conditions: If you have a medical condition, particularly a heart condition, or if you're taking medication, it's recommended to consult with a healthcare professional before using BULK Black. Some ingredients in the supplement could interact with certain medications or exacerbate certain health conditions.

  4. People Under the Age of 18: BULK Black is intended for adults and should not be used by individuals under the age of 18. Although it's likely safe to be used by those under 18, it's just what they stated. 

Remember, it's always a good idea to talk to your doctor or a qualified healthcare professional before using any new supplement.


Here's your FAQ's about Bulk Black answered...

What are the key features of Bulk Black Pre-Workout?

Bulk Black Pre-Workout is designed with an enhanced formula that includes 8,000 mg of L-Citrulline Malate for improved blood flow and muscle pumps, and 75 mg of Infinergy™ Di-caffeine Malate for sustained energy and focus. It also contains 200 mg of L-Theanine to help smooth out the stimulant effect, providing focused energy without the jitters. The formula is balanced with 10 mg of Zinc Chelate for immune support and overall health, making it a potent choice for those looking to maximize their workout intensity.

How long before a workout should I take Bulk Black?

For optimal results, take Bulk Black 20-30 minutes before your workout. This timing allows the ingredients to activate fully, ensuring you get the most out of your training session.

Can I take Bulk Black on non-workout days?

Yes, you can take Bulk Black on non-workout days, though it's specifically formulated to enhance workout performance. Some users may choose to take it on rest days for the cognitive benefits provided by ingredients like caffeine and L-Theanine.

Is Bulk Black suitable for vegetarians or vegans?

Yes, Bulk Black is suitable for both vegetarians and vegans as it does not contain any animal-derived ingredients.

Can I stack Bulk Black with other supplements?

Yes, Bulk Black can be stacked with other supplements. It's important to monitor your total caffeine intake when stacking with other stimulant-containing supplements to avoid overstimulation.

How does Bulk Black taste?

Bulk Black comes in several flavors, including Blue Raspberry, Cherry Kiwi, Blueberry Pomegranate and Sour Gummy. Users generally report that the flavors are enjoyable and not overly sweet, making it a pleasant addition to your pre-workout routine.

Bottom Line

Bulk Black by Transparent Labs is a pre-workout supplement that stands out for its potent energy boost and clean, natural sweetness.

It's packed with a robust 350mg of caffeine, making it one of the most caffeinated options in the Transparent Labs lineup.

Despite the high caffeine content, users can expect a smooth experience with no crashes.

The energy surge is swift and potent, kicking in almost instantly after consumption.

While the pump effects are decent, they may not meet the expectations of those seeking the ultimate pump effects.

However, the natural sweetness of Bulk Black adds a refreshing touch to the pre-workout experience, making it feel super clean to drink.

It's a pre-workout that offers a clean experience, from start to finish, making it a great choice for those seeking a strong energy boost without the crash.

by Nader Qudimat

Forged by iron and cold steel, I'm Nader, a mid-30s natural bodybuilder. Once a 100lb skinny guy, I've transformed into a 200lb muscular athlete with over 15 years of lifting experience. Today, I leverage my transformation and extensive experience to guide countless individuals on their fitness journeys.

Click here to check out my 12 year transformation: Natural 12 Year Transformation

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