Home Keto Diet PhenQ vs. Instant Knockout: Which Is a Better Supplement?

PhenQ vs. Instant Knockout: Which Is a Better Supplement?

Keto Diet
Aug 10
Reading time: 11 min
Written by Edibel Quintero, MD
Fact checked by the medical team
phenq vs instant knockout

PhenQ and Instant Knockout are both fat-burning supplements that are popular in the fitness and weight loss world. Both have many positive benefits and can help you meet your weight loss goals, but which is better?

In our Instant Knockout vs. PhenQ review, we’ve taken a look at how each of the weight loss supplements works, the ingredients that make these fat burners effective, and the health benefits of both of them.

Take a look below to learn more about each product and choose the best fat burner for you and your weight loss efforts.

Summary: Instant Knockout vs. PhenQ

Both PhenQ and Instant Knockout are effective fat-burning supplements that can support your weight loss journey. In this review, we’ll summarize why we think the PhenQ supplement is the better option for those looking to lose weight sustainably.

Take a look at our Instant Knockout vs. PhenQ comparison table to quickly understand the differences between both fat burners.

3.8 / 5
3.5 / 5

Supports fat burning

Curbs appetite

Improves mood and energy levels

Supports muscle formation

Boosts metabolism

Burns fat

Suppresses appetite

Maintains energy levels

Thermogenic ingredients
Inhibits new fat production
Suppresses hunger cravings
Boosts energy levels
Natural ingredients
Burns fat stores
May be slow to work for some
Difficult to get hold of
May not be suitable for vegetarians
3.8 / 5
3.5 / 5
Product info

Supports fat burning

Curbs appetite

Improves mood and energy levels

Supports muscle formation

Boosts metabolism

Burns fat

Suppresses appetite

Maintains energy levels

Thermogenic ingredients
Inhibits new fat production
Suppresses hunger cravings
Boosts energy levels
Natural ingredients
Burns fat stores
May be slow to work for some
Difficult to get hold of
May not be suitable for vegetarians

PhenQ – Natural Weight Loss With Surprising Results

PhenQ is a fat burner that uses clinically-proven thermogenic ingredients to help you burn off stubborn fat. On top of this, the manufacturers of the PhenQ fat burner claim that it can even stop new fat production, helping you maintain your weight loss.

The benefits of PhenQ include its appetite suppressant effects, the way it curbs hunger cravings, its fat-burning abilities, and its stimulant effects.

Thermogenic ingredients
Stops the production of new fat cells
Appetite suppression
Clinically-proven ingredients
Can be slow to work
Difficult to get hold of

Instant Knockout – Knock Out Excess Weight for Good

Instant Knockout is a fat burner designed to help reduce unwanted fat by converting fat stores into energy. It helps prevent new fat cells from being formed and is endorsed by many professionals in the industry.

Instant Knockout benefits include the supplement’s ability to stop new fat production, burn off fat stores, and its appetite-suppressing properties.

Boosts energy levels
Made using natural ingredients
Helps to burn fat stores
May help stop new fat production
Debate as to whether the supplement is suitable for vegetarians

What Is PhenQ?

PhenQ is a weight loss supplement that acts as a fat burner, using clinically proven and thermogenic ingredients. The PhenQ supplement manufacturers claim that this weight loss supplement may even help inhibit new fat production.

It makes use of stimulants, namely caffeine anhydrous, to keep energy levels high as you lose weight and is designed to help suppress appetite and hunger cravings. PhenQ may also be a good supplement to have during a fast period on an intermittent fasting diet.

  • Supports fat burning
  • Curbs appetite
  • Improves mood and energy levels
  • Supports muscle formation
Our Rating:

How does PhenQ work?

PhenQ works in a few ways to help you lose weight faster. Firstly, it works to suppress your appetite. This can be a great way to reduce hunger cravings on an intermittent fasting diet or when trying out the keto diet. It also helps to create a calorie deficit.

It is designed to curb excess weight gain and works to inhibit new fat cell production while also burning stored fat. PhenQ will also keep you energized to ensure you maintain good energy levels and can work out for longer.

What Is Instant Knockout?

The Instant Knockout weight loss pills are designed to help users eliminate unwanted fat. The pills help boost metabolism for weight loss and are regularly endorsed by professionals.

Instant Knockout is designed for use by both men and women and uses clean and natural ingredients. It is thought to reduce inflammation, help the body detox, and burn fat for faster weight loss.

Instant Knockout
  • Boosts metabolism
  • Burns fat
  • Suppresses appetite
  • Maintains energy levels
Our Rating:

How does Instant Knockout work?

Instant Knockout works by helping you boost your overall metabolism. Your metabolism helps your body burn calories off, and the better it is, the more weight you will lose. The pills also help curb appetite, helping you eat at a calorie deficit and suppressing cravings you may experience during dieting.

Instant Knockout benefits from energy-boosting ingredients to help you maintain good energy levels, increasing stamina and promoting longer and harder workouts.

PhenQ Key Features

The key features of the PhenQ fat burner include:

  • Supports fat burning, helping you lose weight more easily
  • Curbs appetite and suppresses cravings
  • Maintains energy levels, helping you work out for longer
  • Improves mood when losing weight
  • Enhances muscle mass formation and maintenance

Instant Knockout Key Features

The key features of the Instant Knockout fat burning supplement include:

  • Supporting cutting and shredding to help with fat burning
  • Thermogenic ingredients to boost weight loss
  • Boosts metabolism
  • Suppresses appetite to help increase calorie deficit
  • Maintains energy levels

PhenQ Key Ingredients

The PhenQ fat burners utilize many natural and clinically-proven ingredients to aid in weight loss and fat burning. We’ve looked at each of these ingredients and how it works within the fat burners.

#1 Calcium

Calcium is an essential mineral in the body. It supports healthy bones and teeth but is also thought to help you lose weight. Indeed, lower calcium levels have actually been linked to higher BMIs.

#2 Chromium

Chromium is another essential trace mineral. It appears in the PhenQ fat burner as chromium picolinate. It is thought to improve metabolism and support weight loss. It plays a major role in lipid, carb, and protein metabolism.

Chromium may also support increased insulin sensitivity, which can protect against type 2 diabetes and prediabetes.

#3 L-carnitine

L-carnitine is an amino acid that plays a role in releasing energy from fat cells. It helps to boost overall energy providing the fuel for longer workouts.

#4 Caffeine

Caffeine anhydrous is found in many fat burners due to its dual ability to boost your energy and focus while also helping to burn fat and curb appetite.

#5 Nopal cactus fiber

A fiber from the nopal cactus, this ingredient is designed to help you feel fuller for longer. This makes these fat burners particularly useful if you’re trying a fasting method like the Warrior Diet.

#6 Capsimax plus blend

This is a blend of peppers that have thermogenic properties. They raise the body temperature by releasing the energy stored in body fat.

#7 a-Lacys reset

This is a trademarked formula in the PhenQ fat burners. It mixes alpha-lipoic acid and L-cystine. The mix is designed to decrease body fat and body weight while helping you gain lean muscle mass. This is particularly useful if you’re engaging in high-intensity workouts or looking to build muscle through workouts like cycling.

Instant Knockout Key Ingredients

The Instant Knockout fat-burning supplement utilizes a range of ingredients known for their weight loss properties. These weight loss pills are designed to increase fat burning while supporting good energy metabolism.

Below, we’ve summarized the top Instant Knockout ingredients to help you understand how these fat burners work.

#1 Vitamins B6 and B12

Both vitamins B6 and B12 play a role in energy production. They help you increase stamina and maintain workouts for longer to burn stubborn fat and promote weight loss.

#2 Zinc

Zinc is essential in the production of lean muscle mass. It also helps turn food and other fuel into usable energy sources, supporting better energy levels.

#3 Chromium picolinate

Chromium can be found in many weight loss pill supplements because of its effect on energy levels and its ability to boost insulin sensitivity.

#4 Green tea extract

Green tea extract is another popular ingredient in fat burners. This is because it contains fat-burning polyphenols and is known to boost metabolism. Boosting your metabolism is a great way to burn off more calories each day.

#5 Cayenne powder

Cayenne pepper adds several vitamins to this fat burner, including vitamins A, B6, and C. It also makes up part of the thermogenic properties of the supplement.

#6 Glucomannan

A well-known ingredient in appetite suppressants and fiber supplements, glucomannan helps curb appetite and suppress cravings. This is great when trying out alternate-day fasting or the ketogenic diet.

#7 Black pepper extract

Black pepper is thought to boost thermogenesis in the body and may assist in digestion. It may also help to suppress new fat production, which makes it a good addition to this fat burner.

PhenQ vs. Instant Knockout Side Effects

When it comes to Instant Knockout vs. PhenQ, one of the things you may be interested in is any potential side effects of these fat burner supplements. Neither supplement has a huge number of side effects, but it is always important to stop using any supplement if the side effects are negatively impacting your life or stopping you from being able to continue with day-to-day activities.

PhenQ side effects

Side effects of the PhenQ fat burners are incredibly limited. If it is taken too late in the day, the caffeine may keep you awake and cause insomnia, and for those who are susceptible to caffeine, it could cause jitters.

For this reason, those with particular sensitivity should avoid this supplement just to be safe.

Instant Knockout side effects

The Instant Knockout side effects include increased anxiety and headaches. These side effects are a little bit more pronounced than those in the PhenQ supplement, and so if you experience them, you may want to switch to a supplement with fewer side effects.

In addition to side effects, fat-burning supplements like PhenQ and Instant Knockout can sometimes cause allergic reactions. It is very rare, but if you experience symptoms of an allergic reaction, you should seek immediate medical attention.

Symptoms of allergic reactions include rashes, itchy and watery eyes, runny nose, confusion, loss of consciousness, difficulty breathing and wheezing, rapid heart rate, and a sudden drop in blood pressure.

How Much Does PhenQ Cost?

PhenQ is a relatively expensive fat burner. It comes in at around $69.95 per bottle; however, the website does offer bundle deals. This means you can get a couple of months’ worth for slightly cheaper, but it does mean committing to this fat burner.

What Is the Price of Instant Knockout?

Instant Knockout is another expensive fat burner, though it is slightly cheaper than the PhenQ product. Instant Knockout is $59.00 for 1 month’s supply, $118.00 for 2 months’ worth, and $185.00 for 4 months’ worth of pills.

For the price, Instant Knockout wins for being slightly cheaper than the PhenQ supplement.

How We Tested 

As part of our PhenQ vs. Instant Knockout review, we tested these products in a few different categories. We took a look at the two fat burners, including everything from who made the product to the effectiveness of the PhenQ and Instant Knockout ingredients, to decide which of these two fat burners was best.

The four categories include quality, effectiveness, price, and brand reputation. Our thoughts are summarized below.


When it comes to quality in our Instant Knockout vs. PhenQ review, we found that both products are of relatively good quality. It is important when choosing dietary supplements to use quality products that will improve your overall health.


Effectiveness was the next category in our Instant Knockout vs. PhenQ review. Both fat burners are designed to help you lose fat, and both use a number of proven ingredients to do so. There is some debate as to whether they can actually stop new fat from being produced, but generally, both are effective in burning fat and reducing weight.

The ingredients in both supplements are useful for those following an intermittent fasting plan, like 16:8, or those who are trying out the ketogenic diet. They can help to reduce food and sugar cravings, making dieting easier.


Both supplements fall short in this category, though Instant Knockout is slightly cheaper. Good health shouldn’t be inaccessible, which is why we try to promote products that are affordable for all.

Both of these fat burners are relatively expensive and may not be easily accessed by all who want to lose weight and reduce fat.

Brand reputation

While PhenQ seems more difficult to find, Instant Knockout is widely available from Amazon and health stores. This means it is easier to get your hands on and is easier to assess. The difficulty of finding PhenQ outside of their official site is slightly worrying.

Word From a Nutritionist

Fat-burning supplement products are popular with those looking to burn excess body fat. They are used to enhance the fat-burning process with ingredients like green tea extract, calcium carbonate, and capsicum extract. While these supplements use the best fat-burning ingredients, they may not be the best way to reduce fat mass.

When it comes to weight loss, the easiest way to lose weight is to eat at a calorie deficit. This means burning more calories each day than you consume. You can burn extra calories by incorporating regular exercise into your day, perhaps by starting running or cycling for weight loss.

Eating at a calorie deficit is made easy through weight loss methods like intermittent fasting and the keto diet. While there are lots of intermittent fasting styles, like the 5:2 method and 36-hour fast, which all promote a calorie deficit, the keto diet requires a low-carb, high-fat diet to boost fat reduction.

While supplements can help aid these diets by using ingredients that suppress appetite and burn fat more easily, they are not necessary for sustainable and healthy weight loss. You can see amazing weight loss results without taking these supplements, though some people choose to use them to speed up losing fat.

If you decide to try out one of these supplements, it is important that you find quality and effective supplements that are known to work and promote good overall health.

Keto Cycle FUEL
  • Helps facilitate ketosis
  • Encourages fat burning
  • Curbs appetite and lifts energy levels


How to use PhenQ?

It is recommended that you take one PhenQ capsule at breakfast and one with your lunch. The manufacturers have recommended that users do not use these supplements after 3 PM as they contain caffeine, which could affect sleep when taken late in the day.

How to use Instant Knockout?

The Instant Knockout supplement requires you to take four capsules throughout the day. For best Instant Knockout results, the manufacturers recommend taking capsules before mealtimes.

Do Instant Knockout and PhenQ help to lose weight?

Both supplements offer fat-burning properties, help suppress appetite, and maintain good energy levels while working out.

Which is more effective: PhenQ or Instant Knockout?

Both supplements offer impressive results for fat metabolism, and both have effective ingredients. Consumers also love both products.

Conclusion: Instant Knockout vs. PhenQ

In our Instant Knockout vs. PhenQ review, we’ve taken a look at all aspects of these products. It is our opinion that the PhenQ supplement offers the most all-around weight loss experience and can help you keep the weight off once you achieve your goals.
While both products are effective and use quality ingredients, we would suggest trying PhenQ first as it has fewer side effects, uses all-natural ingredients, and can help with sustainable weight reduction.

Written by
Edibel Quintero, MD

Edibel Quintero is a medical doctor who graduated in 2013 from the University of Zulia and has been working in her profession since then. She specializes in obesity and nutrition, physical rehabilitation, sports massage and post-operative rehabilitation. Edibel's goal is to help people live healthier lives by educating them about food, exercise, mental wellness and other lifestyle choices that can improve their quality of life.

Fact checked by the medical team

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