Knock Out is a fat burning supplement that may have the advertised high impact weight loss effect due to the inclusion of caffeine, green tea, and glucomannan. This can be an effective combination for weight loss for some people, but will not be suitable if you have any health conditions relating to heart or blood pressure. At $39.95 for a 60-day supply, it is relatively inexpensive. At the moment, the main stockist is Amazon, with a few third-party sellers on other supplement websites, but it does not appear on the Nutra4Health website.
There are multiple ingredients in Knock Out that can have some side effects. We have listed these under the ‘side effects’ tab below.
This is a relatively inexpensive fat burning supplement when you take into consideration a bottle should last the user sixty days. However, we think we know why it is cheap – it’s a proprietary blend, which is often a sign of underdosed and therefore ineffective ingredients. The company offer a money-back guarantee, but as it is sold through Amazon or other third party sellers, you are usually covered anyway. We have found a Nutra4Health website listing a few supplements, but there is no information on there and this product is not listed, which is rather suspicious.
We also raised our eyebrows at one of the Amazon comments, where a key printing error was pointed out – the label had ‘product name’ instead of the actual product name on there. Surely any self-respecting and legitimate company would check this before selling their products.
There are some ingredients in there that, if dosed correctly, may have some effect on weight loss. These include the various forms of caffeine and the glucomannan. However, there are also ingredients in there that have no scientific proof in working when it comes to humans – raspberry ketones being one of them.
It’s also slightly worrying when a product contains multiple sources of caffeine, as this one does, without the exact quantities. More than 400mg of caffeine a day can give some quite serious side effects. It is important for the user to know exactly how much they are consuming to keep them safe.
With all of this in mind, we do not recommend Knock Out to our readers.
Knock Out is a US made fat burning supplement. It contains three proprietary blends: energy and focus blend, thermogenesis blend and lipogenic blend. It uses a range of ingredients commonly found in these types of supplement such as raspberry ketones and glucomannan, as well as caffeine and green tea extract. Consumers are instructed to take one capsule a day.
Knock Out is sold on Amazon by Nutra4Health, a small supplement manufacturer based in the USA. There is no official website and no reviews or coverage of either this product or the company, so it’s hard to get a picture of who this company are. They appear to outsource the design of their bottle labels out, with a rather large printing error on them being pointed out by a customer in the Amazon reviews.
We cannot find any instructions for use, but we assume the user should be taking one capsule a day.
This is taken from the Amazon listing for the product:
Given the proprietary blend in use here, we’re unable to verify if the quantity of each ingredient used is substantial enough for this to work. Caffeine and glucomannan are considered useful for weight loss. Raspberry ketones, however, have never been proven useful. Some of the other ingredients would seem to be for mood and energy boosting rather than weight loss.
The manufacturer does not provide exact quantities used for each ingredient, which makes it difficult for us to estimate how effective the overall mix is. The ingredient quantities listed are correct for 1 capsule of Knock Out.
Consuming large quantities of caffeine can lead to headaches, increased heart rate, increased blood pressure, heart palpitations, increased urination, dehydration, jitteriness, dizziness, and insomnia. As we don’t know how much of the caffeinated ingredients the supplement contains, this is something to be particularly cautious of. Green Tea can also cause constipation.
Yohimbe can also cause a wide range of side effects, including stomach upset, excitation, tremor, sleep problems, anxiety or agitation, high blood pressure, a racing heartbeat, dizziness, drooling, sinus pain, irritability, headache, frequent urination, bloating, rash, nausea, and vomiting. L-Carnitine can cause side effects such as nausea, vomiting, stomach upset, heartburn, diarrhoea, and seizures. It can also cause the urine, breath, and sweat to have a “fishy” odour. Some users of raspberry ketone have reported feeling ‘weak’, restlessness, insomnia, chest pains, headaches, and nausea.
Do not exceed the recommended dosage. Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any other dietary supplement. Keep out of the reach of children. Do not use if the safety seal is damaged or missing. Store in a cool, dry place. Do not consume with other medications that may have an effect on blood pressure.
Almost a third of the very few Amazon reviews are negative. One stood out immediately, flagging the company as slightly suspicious. They included a photo to back up their review.
It’s an energy pill that you can feel but if you’re looking for the Instant Knockout from bodybuilding magazines and sites this isn’t it. Those are from a company called “Roar Ambition”, this company is called “Nutra4health”. A little intentionally deceptive marketing got me.
On the label comes the statement “When combined with exercise and a reduced-calorie diet, PRODUCT NAME can help you reach your weight loss goals.” Kind of annoying.
You can purchase it from the Amazon US for $39.95.
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Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.