Quick Verdict
Instant Knockout delivers on its name, facilitating fat loss even pro fighters can appreciate. The formulation ramps up energy, decreases appetite, and boosts metabolism, so your gym efforts are rewarded with tangible results.
Primeshred lacks Instant Knockout’s fat-burning and appetite-suppressing potency. It matches it as an energy booster and can even be better for mental power and focus, but the product’s main purpose is to help you lose weight, and the clear winner in this regard is Instant Knockout.
| Feature | Winner |
|---|---|
| Ingredients | Instant Knockout |
| Dosage | Instant Knockout |
| Effectiveness | Instant Knockout |
| Third-Party Testing | Draw |
| Clinical Research | Draw |
| Side Effects | Primeshred |
| User Reviews | Draw |
| Price | Draw |
Winner
Instant Knockout is the more potent fat burner naturally increasing metabolism and providing energy for working out. Hence why it’s one of my best fat burners for men over 40.
That doesn’t discount Primeshred. It’s a powerful energy booster.
What Is Primeshred
PrimeShred is an innovative fat-burning supplement that helps people achieve their weight loss and fitness objectives more effectively.
It has carved out a position for itself in the competitive field of dietary supplements because of its strong blend of scientifically proven ingredients.
PrimeShred’s major role is to speed up the fat-burning process while preserving lean muscle mass, making it an excellent addition to any exercise plan focused on toning and muscle retention.
PrimeShred is generally aimed at men, while other formulas may be more suitable for women. It’s made by Health Nutrition Limited, a business known for creating high-quality supplements.
The product is manufactured in the United States in an FDA-approved and GMP-certified facility, assuring high quality control requirements.
My Primeshred review goes into detail about the formula and my experience.
What Is Instant Knockout
Instant Knockout is a popular fat-burning supplement originally developed for professional athletes and fighters to help them shed fat quickly and efficiently.
It combines various natural ingredients designed to increase metabolism, suppress appetite, and enhance energy levels.
Instant Knockout is produced by Roar Ambition, a UK-based supplement company known for creating high-quality products targeted at athletes and fitness enthusiasts.
The key components include green tea extract, caffeine anhydrous, cayenne pepper, and glucomannan, among others.
These ingredients work synergistically to stimulate thermogenesis, the process by which the body burns calories to produce heat.
By increasing metabolic rate and reducing hunger cravings, Instant Knockout aims to help users burn fat while preserving muscle, making it a favored choice for those seeking a leaner physique.
My Instant Knockout review goes into detail about the formula and my experience.
Primeshred vs. Instant Knockout Main Differences
Benefits
Instant Knockout and PrimeShred are both supplements designed to aid in fat loss, but they each offer unique benefits that cater to different aspects of weight management and fitness performance.
Instant Knockout focuses on accelerating fat burning by boosting metabolism and enhancing thermogenesis, helping the body burn more calories throughout the day.
It also works as an appetite suppressant, reducing food cravings and aiding in portion control, which is crucial for sustainable weight loss.
Additionally, its ingredients, such as green tea extract and cayenne pepper, contribute to increased energy levels, making it easier to stay active and maintain a consistent workout routine.
PrimeShred, on the other hand, is formulated to deliver a comprehensive fat-burning experience by targeting the body’s fat metabolism while also boosting mental focus and energy.
Its blend of ingredients like L-tyrosine and Rhodiola Rosea supports cognitive function, helping users stay sharp and focused during intense workouts.
PrimeShred also promotes the breakdown of stubborn fat and improves the body’s ability to transport fat to be used as energy, optimizing fat loss while preserving muscle mass.
Together, these supplements offer enhanced fat-burning capabilities, energy support, and appetite control, helping individuals achieve leaner physiques and improve overall fitness performance.
Ingredients
Primeshred and Instant Knockout are targeted mainly at male athletes, bodybuilders and fitness enthusiasts and have many shared components, but also some distinct differences marking varied approaches to weight loss.
Both supplements also have transparent ingredient lists, enabling us to compare their doses in detail.
It’s important to note that both are highly caffeinated supplements. The high stimulant doses aim to maximize workout performance by providing energy and focus.
Caffeine is a well-known stimulant that increases alertness and decreases fatigue. In addition to these well-known benefits, the substance also boosts metabolic rate, which promotes fat reduction. According to a study, coffee can enhance the resting metabolic rate by 3–11% [6][7].
Instant Knockout contains 300 mg of caffeine, roughly equivalent to three espressos, while Primeshred is slightly lower at 225 mg.
Furthermore, both also contain 500 mg of green tea extract, which additionally boosts the caffeine dose. Green tea has many other benefits, though. It is high in antioxidants, particularly catechins, which increase metabolic rate and promote more efficient fat burning.
Studies show that mixing caffeine with catechins can boost calorie expenditure and fat oxidation, making it a perfect element for a fat-burning supplement.
The next shared component is capsicum, which is the active component of red chili peppers. Capsicum has strong thermogenic properties that increase metabolism. Capsaicinoids have been shown to induce thermogenesis, increase fat oxidation, and decrease appetite [8].
Primeshred has double the dose of cayenne pepper with 200 mg.
Piperine continues the list of shared ingredients. This black pepper extract boosts the bioavailability of other nutrients, helping the body absorb them better, which is why it is frequently found in supplements [2][3].
The last common component of both formulations is B vitamins. Primeshred includes B3, B6, and B12, while Instant Knockout has B6 and B12. These vitamins are all essential for the proper functioning of various bodily functions.
Instant Knockout also contains 45 mcg of vitamin D, crucial for bone health and the immune system. It has also been suggested that it aids in weight loss by regulating the accumulation and breakdown of fat cells [9].
A high caffeine dose can create a lot of issues like jitteriness, anxiety, elevated heartbeat, and insomnia, so Instant Knockout has an important element to mitigate these, and it’s the amino acid L-theanine.
L-theanine produces a calm state of focus and relaxation without generating sleepiness, but its synergistic action with coffee is probably more crucial in this situation, significantly lowering the jitters and restlessness that a high stimulant dose can bring [4][5].
The major appetite suppressant in Instant Knockout is glucomannan, a dietary fiber derived from the Konjac plant.
The dose is 1800 mg per serving, and its purpose is to expand in the stomach and create a feeling of fullness.
Many scientific studies support its usefulness, suggesting that it can greatly aid in weight loss when accompanied by a nutritious diet and regular exercise [1].
Primeshred has potent adaptogens and stress-relieving ingredients like L-Tyrosine, Rhodiola Rosea, and DMAE.
L-tyrosine is an amino acid crucial in producing neurotransmitters like dopamine and norepinephrine. This ingredient ensures that your brain remains sharp, helping you stay motivated and focused on your fitness goals [10][11].
Rhodiola Rosea helps reduce fatigue and increase endurance. The herb is known for improving oxygen utilization, which can enhance exercise performance [12].
DMAE (Dimethylaminoethanol) at 150 mg in PrimeShred improves cognitive performance by promoting acetylcholine synthesis, a neurotransmitter required for brain function.
This substance improves focus, alertness, and overall cognitive function, making it easier to stick to your training routine [13].
Effectiveness
Instant Knockout was the more effective supplement in terms of weight loss. The product works fast and efficiently, first by providing ample energy to train and work. After a few days of intake, the effect on appetite suppression also becomes evident.
The supplements can greatly contribute to a successful and sustainable weight loss journey with enough time and effort.
Primeshred also has its merits, although the weight loss I experienced was less dramatic. The high caffeine dose, combined with green tea and green coffee, along with the well-dosed nootropics like DMAE and Rhodiola Rosea, makes a big difference in energy levels, mood, and motivation, and sticking to a strict training regimen is a lot easier than without it.
However, the fat-burning effects are not as strong, and the solid cayenne pepper dose was not enough to produce enough of an effect in my test.
Clinical Research
The clinical research on Instant Knockout and PrimeShred primarily supports the efficacy of their individual ingredients.
Instant Knockout includes green tea extract, caffeine, and glucomannan, all backed by studies showing their ability to boost metabolism, enhance fat burning, and suppress appetite.
Similarly, PrimeShred contains ingredients like L-tyrosine and Rhodiola Rosea, which are known for improving cognitive function and reducing fatigue. It also contains green coffee bean extract, which aids in fat metabolism.
While the supplements haven’t undergone clinical trials, their ingredients are well-supported by research, suggesting they can be effective when combined with a healthy lifestyle.
Side Effects
Both Instant Knockout and PrimeShred are formulated with natural ingredients, making them generally well-tolerated by most users. However, as with any supplement, there can be potential side effects, particularly due to stimulants like caffeine.
Instant Knockout contains a significant amount of caffeine, which can cause jitteriness, increased heart rate, insomnia, or anxiety in sensitive individuals, especially when taken in high doses or alongside other caffeinated products.
The cayenne pepper extract might also cause mild digestive discomfort, such as heartburn or stomach upset.
PrimeShred also includes caffeine and similar stimulants, so users may experience comparable side effects like restlessness or trouble sleeping if not taken at the right time of day.
Additionally, those sensitive to ingredients like Rhodiola Rosea or L-tyrosine might experience mild headaches, nausea, or dizziness.
To minimize side effects, it’s recommended to follow the dosing instructions carefully, avoid taking the supplements late in the day, and consult a healthcare professional if you have pre-existing conditions or are sensitive to stimulants.
Both caused some minor issues early on until my body adjusted to the high caffeine doses. With Instant Knockout, I had a few restless nights while sticking to the recommended intake of 4 capsules spread throughout the day, but once I spaced them earlier in the day, the problem was gone.
User Reviews
The review section of Instant Knockout’s official website is presently unavailable. Third-party websites have several assessments, mostly positive, with people praising the product’s substantial benefits.
Nonetheless, there are valid concerns concerning the high cost and possible adverse effects. Some people get headaches, and some complain about the heat buildup in their bodies, although this is a clear sign of increased thermogenesis, which is a feature rather than a flaw.
Most issues stem from the 300 mg caffeine dose. While the L-theanine curbs most of the negative effects, more stimulant-sensitive people still find it too much.
Many people have experienced impressive outcomes using PrimeShred. One user on a major fitness forum said that PrimeShred considerably increased their energy levels throughout workouts.
They noticed an undeniable boost in stamina and endurance, allowing them to work more and achieve better results.
While many consumers had favorable experiences, several pointed out areas in which PrimeShred could improve.
Some users reported that they did not observe substantial improvements until after several weeks of constant use.
These consumers believed that, while the product eventually delivered on its promises, it needed patience and dedication, which may not be suitable for individuals seeking faster solutions.
Taste and convenience were other minor issues of debate. Some customers found the capsules larger than they would like, making swallowing difficult. Although not a deal-breaker for most people, it was significant for those who have difficulty consuming tablets.
Price
| Fat Burner | 1 Bottle | 2 Bottles / Subscription | 4 Bottles / Subscription 3rd Month |
|---|---|---|---|
| Primeshred | $59.99 ($2.00 per serving) | $47.99 ($1.60 per serving) | $36.00 ($1.20 per serving) |
| Instant Knockout | $65.00 ($2.17 per serving) | $130.00 ($2.17 per serving) | $195.00 ($1.63 per serving) |
My Experience With Primeshred And Instant Knockout
As I expected, given that Instant Knockout was made for fighters, I loved it. The product is designed to work fast, efficiently, and, I might say, forcefully.
The high doses of stimulants, aided by potent thermogenic ingredients and appetite suppressants, target all areas of weight loss, and I managed to shed pure fat without losing muscle, which is the best outcome I could’ve imagined.
On the negative side I need to mention that the caffeine can be a bit too much sometimes, even with L-theanine inside.
The four capsules should be spread before meals, which means the caffeine is not taken all at once. However, forgetting to take a dose can happen rather often.
Primeshred is also a powerful energy booster. The formula efficiently increases physical energy, mental power, focus, and motivation, which are equally important for anyone training seriously, whether with weights or in a sport.
But I haven’t felt any effects on my appetite, and the metabolism-boosting ingredients seemed insufficient to kickstart a proper weight loss process.
In one month of intake, I enjoyed Primeshred to maintain my energy levels, but its effects as a fat burner were not enough to convince me to go for another month.
Should You Choose Primeshred or Instant Knockout
Instant Knockout is a more potent fat burner and my top choice. Designed for fighters, the supplement takes no shortcuts, and the minor inconveniences the high stimulant dose can cause are more than justified for anyone serious about their results, like a fighter working to cut weight.
The benefits of Primeshred are that it is a potent physical and mental energy booster, which does translate into training.
Still, as a fat burner, it lacks the potency of Instant Knockout, which is why it loses this comparison.
Instant Knockout
Instant Knockout
A powerful fat burning formula designed for athletes to increase thermogenesis and suppress appetite.
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References
- Keithley, J., & Swanson, B. (2005). Glucomannan and obesity: a critical review. Alternative Therapies in Health & Medicine, 11(6).
- Zheng, J., Zheng, S., Feng, Q., Zhang, Q., & Xiao, X. (2017 . Dietary capsaicin and its anti-obesity potency: from mechanism to clinical implication . Bioscience reports, 37(3), BSR20170286.
- Rogers, J., Urbina, S. L., Taylor, L. W., Wilborn, C. D., Purpura, M., Jäger, R., & Juturu, V. (2018). Capsaicinoids supplementation decreases percent body fat and fat mass: Adjustment using covariates in a post hoc analysis. BMC obesity, 5, 1-10.
- Hidese, S., Ogawa, S., Ota, M., Ishida, I., Yasukawa, Z., Ozeki, M., & Kunugi, H. (2019). Effects of L-theanine administration on stress-related symptoms and cognitive functions in healthy adults: a randomized controlled trial. Nutrients, 11(10), 2362.
- Williams, J. L., Everett, J. M., D’Cunha, N. M., Sergi, D., Georgousopoulou, E. N., Keegan, R. J., … & Naumovski, N. (2020). The effects of green tea amino acid L-theanine consumption on the ability to manage stress and anxiety levels: A systematic review. Plant foods for human nutrition, 75, 12-23..
- Clark, K. S., Coleman, C., Shelton, R., Heemstra, L. A., & Novak, C. M. (2019). Caffeine enhances activity thermogenesis and energy expenditure in rat . Clinical and Experimental Pharmacology and Physiology, 46(5), 475-482.
- Dulloo, A. G., Geissler, C. A., Horton, T., Collins, A., & Miller, D. S. (1989). Normal caffeine consumption: influence on thermogenesis and daily energy expenditure in lean and postobese human volunteer . The American journal of clinical nutrition, 49(1), 44-50.
- Zheng J, Zheng S, Feng Q, Zhang Q, Xiao X. Dietary capsaicin and its anti-obesity potency: from mechanism to clinical implication . Biosci Rep. 2017 May 11;37(3):BSR2017028 . doi: 10.1042/BSR2017028 . PMID: 28424369; PMCID: PMC5426284.
- de la Puente Yagüe M, Collado Yurrita L, Ciudad Cabañas MJ, Cuadrado Cenzual MA. Role of Vitamin D in Athletes and Their Performance: Current Concepts and New Trends. Nutrients. 2020 Feb 23;12(2):579. doi: 10.3390/nu12020579. PMID: 32102188; PMCID: PMC7071499..
- Steenbergen, L., Sellaro, R., Hommel, B., & Colzato, L. S. (2015). Tyrosine promotes cognitive flexibility: evidence from proactive vs. reactive control during task switching performance. Neuropsychologia, 69, 50-55.
- Jongkees, B. J., Hommel, B., Kühn, S., & Colzato, L. S. (2015). Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands—A review. Journal of psychiatric research, 70, 50-57.
- Cropley, M., Banks, A. P., & Boyle, J. (2015). The effects of Rhodiola rosea L. extract on anxiety, stress, cognition and other mood symptoms. Phytotherapy research, 29(12), 1934-1939.
- Blin, O., Audebert, C., Pitel, S., Kaladjian, A., Casse-Perrot, C., Zaim, M., … & Marien, M. (2009). Effects of dimethylaminoethanol pyroglutamate (DMAE p-Glu) against memory deficits induced by scopolamine: evidence from preclinical and clinical studies. Psychopharmacology, 207, 201-212.
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