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A thermogenic pre-workout is a supplement that can help you lose weight by boosting your metabolic rate and allowing you to burn more calories, and also by increasing your energy levels so that you can get through a workout more proactively.
Jacked Factory, the company behind NitroSurge Shred, claims the supplement can increase strength, promote fat loss, while also giving you endless energy and focus.
NitroSurge Shred has thousands of reviews (on Amazon) and most of them are positive.
In this article, I’ll dive deep and analyze the formula to understand if the ingredients are legitimate and whether or not they’re delivered in effective dosages.
What Is Nitrosurge Shred?
NitroSurge Shred is a thermogenic pre-workout supplement because it essentially combines ingredients that induce thermogenesis and ingredients that act as an energy boost to the system to improve athletic performance.
Thermogenesis can be defined as the metabolic process by which organisms burn calories in order to generate heat. A simpler way to define it is by saying it’s the body’s way of generating heat by burning calories.
Thermogenics are ingredients that help increase the production of heat in the body, and consequently, increase the number of calories you expend. This means that in a day, you’re able to burn more calories than you normally would, which in theory, allows you to lose weight at a much faster rate.
NitroSurge Shred is also a pre-workout supplement, and therefore you’ll find ingredients that provide you with a boost of energy but without introducing more calories, which should make it a helpful tool in optimizing energy expenditure.
What’s In NitroSurge Shred?
NitroSurge Shred is quite similar to NitroSurge, also a pre-workout formula designed by Jacked Factory but it does not have the thermogenic feature that potentiates energy expenditure.
The ingredients in NitroSurge Shred include l-citrulline, beta-alanine, acetyl l-carnitine, caffeine anhydrous, l-theanine, theomobrine, and Bioperine.
Let’s figure out whether or not these ingredients are helpful.
L-Citrulline (2 g)
L-citrulline is one of three dietary amino acids in the urea cycle, alongside l-arginine and l-ornithine.
The manufacturer claims that l-citrulline can boost nitric acid production and thus enhance muscular endurance, increase strength, and delay fatigue during a workout.
It seems to be that case that oral l-citrulline consumption increases nitric oxide production, therefore you’ll find evidence that suggests a reduction in blood pressure and improvement in blood flow from long-term citrulline supplementation. 1, 2
There is also some evidence, albeit limited, that l-citrulline supplementation leads to an improvement in power output, a reduction in fatigue, and improved endurance for both aerobic and anaerobic exercise. 3, 4, 5, 6
With that being said, many of these studies have used acute citrulline supplementation, which may have helped, though it’s likely that chronic supplementation was the cause.
Beta-Alanine (1.6 g)
Beta-alanine is a modified version of the amino acid alanine, and it has been shown to enhance muscular endurance, with many people reporting being able to do extra reps in the gym even in high-rep sets. 7
There’s also evidence that beta-alanine can also increase performance for cardiovascular exercises like rowing or sprinting. 8
The standard daily dose is between 2 and 5 grams, but NitroSurge Shred contains 1.6 grams, which is slightly lower but doesn’t seem to diminish effectiveness.
Such a high dose may cause a harmless side effect called paresthesia, which causes a tingling feeling — but that can be avoided with a slightly lower dosage.
Acetyl L-Carnitine (1 g)
L-carnitine is a compound produced by the body from lysine and methionine — and it can be acetylated to produce acetyl-L-carnitine which is similar but it crosses the blood-brain barrier more efficiently.
Acetyl l-carnitine demonstrates a certain level of effectiveness against depression but research is still limited. 9
Some studies also show it might reduce fatigue in older individuals with low muscular endurance 10, but its effects on young athletes are not particularly consistent, even though research does suggest small improvements.
Acetyl l-carnitine is often included in fat-burning supplements, however, many studies show that its effects on weight loss are not significant.
Caffeine Anhydrous (180 mg)
Caffeine Anhydrous is made from the seeds and leaves of coffee plants. The word “anhydrous” means “without water”, and it’s essentially derived from a process where coffee leaves are dehydrated, resulting in a highly concentrated caffeine powder.
Caffeine is proven to be a very powerful stimulant— in fact, there are many studies that show it can improve physical strength and endurance. 11, 12, 13, 14 It’s also a nootropic because it sensitizes neurons and provides mental stimulation.
Caffeine acts upon/against the adenosine receptors in the brain, blocking the entry of adenosine, a substance that has a sedative and relaxing effect. This antagonizing role allows caffeine to promote alertness and wakefulness, proving itself to be a terrific energy booster.
L-Theanine (90 mg)
L-theanine is one of the main active ingredients found in green tea, alongside caffeine and catechins.
An evidence-based analysis suggests that l-theanine may help reduce anxiety and promote relaxation without drowsiness, making it potentially synergistic with caffeine. 15
However, a lot of it is preliminary evidence, and while the studies suggest such benefits, these claims should be taken with a grain of salt.
Theobromine (50 mg)
Theobromine is a molecule made by plants and is a major alkaloid that happened to be discovered in cocoa beans in 1841.
It is still being explored in order to determine its beneficial effects. However, some of the claims about theobromine include stimulating the heart, widening blood vessels, and potentially improving one’s mood.
However, there is not enough evidence to support such claims.
BioPerine (2.5 mg)
Bioperine is a patented piperine extract, containing at least 95% piperine in a form that is well absorbed by your body, and like cayenne pepper extract, it increases bioavailability.
Studies show that Bioperine can increase the absorption of different plant compounds, including tea polyphenols, curcumin, beta carotene, and selenium. 16, 17
This, however, requires more research because there’s nothing to suggest it might enhance the absorption of l-citrulline, beta-alanine, caffeine, and other ingredients.
Is Nitrosurge Shred Effective?
NitroSurge Shred is, without a doubt, a supplement that promotes weight loss through its energy-boosting and thermogenic-inducing ingredients.
Ingredients like theobromine and l-theanine are somewhat questionable because they base claims on preliminary evidence, but ingredients like beta-alanine and caffeine anhydrous are backed by serious studies.
Plus, if you check websites like Jacked Factory and Amazon, you’ll be able to see that it has plenty of reviews, most of which are positive.
If you’re someone that exercises regularly and want a supplement to help you burn fat or lose weight, then NitroSurge Shred shows promise.
How Much Does It Cost?
The cost of NitroSurge Shred is $29.99 which is equivalent to $0.99 per serving.
How Should You Take It?
Generally, Jacked Factory recommends that you mix 2 scoops of Nitrosurge SHRED with 12-20 ounces of water 25-35 minutes before working out, however, to assess your tolerance, they recommend mixing only 1 scoop the first time you take the supplement.
Does It Have Side Effects?
Since NitroSurge Shred contains a variety of ingredients, namely caffeine, some people will likely experience side effects such as jitteriness, paresthesia (a harmless nervous reaction), an upset stomach, and headaches.
For that reason, you shouldn’t go overboard with the dosages and only take what they recommend.
Editor’s note: The content on this website is meant to be informative in nature, but it should not be taken as medical advice. The content of our articles is not intended for use as diagnosis, prevention, and/or treatment of health problems. It’s always best to speak with your doctor or a certified medical professional before making any changes to your lifestyle, diet, or exercise routine, or trying a new supplement.
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2 – Ochiai M, Hayashi T, Morita M, Ina K, Maeda M, Watanabe F, Morishita K. Short-term effects of L-citrulline supplementation on arterial stiffness in middle-aged men. Int J Cardiol. 2012 Mar 8;155(2):257-61. doi: 10.1016/j.ijcard.2010.10.004. Epub 2010 Nov 9. PMID: 21067832.
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