Keto OS Review


Keto OSKeto OS by Pruvit Review – The Weight Loss Miracle We Have Been Waiting for?

3.76/5 (17 votes)

There is certainly a huge number of people all over the world who would want to lose weight. However, many of them simply cannot reduce their weight unless they eat virtually nothing and workout every hour of the day, which is something that none of us have got time for. Unsurprisingly, therefore, there is a huge market for weight loss products, plans, books, and supplements. Unfortunately, a substantial number of these don’t really work.

Meanwhile, Pruvit, which is a well-established company, has developed its Keto OS line of products, which has been very positively received. Essentially, these products enable ketosis, which is a natural process whereby the body converts fat into fuel. But could it really be as simple as that? Let’s take a look at Keto OS and what you can expect.

What Is Keto OS?

Keto OS is a line of weight loss supplements based on caffeine, stevia, malic acid, natural flavor, beta-hydroxybutyrate, ascorbic acid, and medium-chain triglyceride (MCT) powder. The company has also developed the Keto OS Max line, which added l-taurine and l-leucine. According to the manufacturer, taking one packet or one scoop a day will start the process of ketosis in the body, encouraging you to burn fat faster and thus, help you lose weight.

Pruvit was first launched in 2013 and they have grown tremendously since then. Their Keto OS line includes pre-packaged servings or powder canisters, enabling you to easily follow their recommended diet. And, they claim that your body will go into ketosis in just half an hour after taking the product. Ketosis means that you don’t burn carbohydrates for energy, but instead you burn fat, which results in rapid and safe weight loss.

The product is based on the ketosis diet, which, like the Atkins diet, is incredibly restrictive and hard to follow. What Pruvit has done, is create a supplement that ensures you don’t have to follow those complex restrictions and dietary rules. Not just that, they claim it also helps to build your energy levels, suppress your appetite, and fight inflammation. That is pretty impressive and clearly different from other products currently on the market.

The OS in Keto OS stands for “operating system”. That is because the formula gives your system the necessary ketones, essentially bio-hacking it in just half an hour. The supplement creates the perfect protein synthesis, encouraging your body to burn fat. Depending on how much weight you want to lose, you use the product either once or twice a day.

Biologically speaking, the body only produces ketones during periods of fasting. However, it should be noted that it is actually our natural and native state. Newborns and babies who are breastfed are in permanent ketosis (this is why breastfed babies don’t put as much weight on). Going back to our caveman ancestors, ketosis was a natural form of survival, ensuring that they burned fat and not muscle when food was scarce, thereby providing them with enough strength to hunt.

The problem now is that we live in a society where we love carbs. So much so, in fact, that metabolic syndrome, caused by lack of activity and obesity, is now the main cause of heart disease. The result is that achieving natural ketosis is pretty much impossible. Hence, a product like Keto OS has become necessary.

The science behind this is quite impressive. It has been conclusively proven that, compared to carbs and sugars (glucose), ketones can produce as much as 38% more energy, while preserving muscle tissue at the same time. Furthermore, it has been demonstrated that the brain prefers ketones to glucose for fuel as well, which is why Keto OS has so many other health benefits. In fact, Pruvit claims it can even help to protect people from developing Alzheimer’s disease.

The number of studies on ketones is huge, proving without a doubt that they work. You can, should you desire it, purchase ketone test strips from any drugstore and these will confirm, just half an hour after having your Pruvit product, that your body has gone into ketosis.

Keto OS IngredientsThe Product Line and What Each Product Costs

Pruvit knows that so many people fail at dieting because of its restrictive nature. This is one of the reasons why they have developed a range of different products, so that you don’t find yourself stuck with just one flavor. This line of products includes:

  • The Keto OS 2.1 Orange Dream, which contains MCT oil to suppress your appetite and help you feel full. It is gluten-free, but it does contain dairy and is hence not suitable for vegans. Your body may take some time to adjust to the MCT oil, which means you may feel a little queasy for a day or two. Prices start at $85.
  • The Keto OS 3.0 Chocolate Swirl, which is not as strong in taste as the Orange Dream because it does not contain MCT oil. It does, however, contain prebiotics. This makes it perfect for a second serving should you need one. It is also gluten free and dairy-free and suitable for vegans. Prices start at $85.
  • The Keto OS Max Maui Punch, which is the bestselling product because it packs a real ketosis punch. This will provide you with fantastic mental focus and a great energy boost, making it perfect before a workout. It is easy to drink and light in taste, and is also gluten free and dairy-free and suitable for vegans. Prices start at $130.
  • The Keto OS Max Swiss Cacao, which is very similar to the Max Maui Punch, except that it has a Swiss chocolate flavor. In fact, it is actually made with cocoa, which means it really tastes of chocolate, without being too sweet. Prices start at $130.
  • The Keto Kreme, which is like a coffee creamer and can also be added to milk. You will still need to take Keto OS products, however. Prices start at $74.

Keto OS Before & After

Side Effects

There has been a number of people who have said that they have experienced side effects when taking Keto OS. However, this is mainly due to the body adjusting to the shift to ketosis. This is a well-documented process, one that is commonly referred to as “Atkins Flu”. We have conditioned our body to using carbohydrates for fuel, and when these are suddenly no longer available, we tend to have headaches, muscle aches, and fatigue.

Other people also find that they get a little bit jittery after they take Keto OS. Again, this is the body’s way of adjusting to ketosis, as well as in response to the caffeine in the product. It should be noted, however, that the caffeine contributes to the increase in energy.

Both side effects are short-lived, and most people get used to the product within just a few days. However, some people find them so uncomfortable that they stop before they are able to reap the benefits. It is important to remember that the side effects are not dangerous and don’t last long, and are definitely worth it.

Other Keto OS Benefits

One of the things that make Keto OS so special is that it has health benefits other than weight loss. Pruvit is committed to not making any false claims, which is why they have developed a research section on their website that shows not just the results of studies on ketosis and ketones, but also other health benefits.

Some of the key health benefits you can enjoy include:

  • A significant reduction of any type of inflammation. This is something many people have commented on, noticing a reduction in various kinds of inflammation, from blepharitis to arthritis.
  • An improvement in skin condition, mainly because a lot of people don’t know they have skin inflammation, such as rosacea.
  • A reduction in chronic pain, particularly in the joints, again due to anti-inflammatory properties.
    Neuroprotection and cognitive improvement, giving you greater mental clarity. Interestingly, some research studies suggest that it can even help to prevent Alzheimer’s disease.
  • Improvement in insulin sensitivity, helping to fight or manage diabetes. This is strengthened when taking Keto OS and leads to weight loss.
  • Various anti-aging benefits due to improvements in cellular longevity and health.
  • Weight loss that is not caused by loss of muscle tissue.
  • Cancer prevention, because a cancer cells cannot use fuel provided by ketosis. This does not mean that Keto OS cures cancer, but rather that it makes it much more difficult for cancer cells to grow.

All of these claims are supported by scientific evidence. This is why the product has been featured on Fox News, NBC, and ABC. It has also been studied by Oxford University in the United Kingdom, and by Yale University in the US. The product has been fully lab tested, approved by doctors. In fact, it has its own Certificate of Analysis (CFA), and the proprietary formula has been patented.

What I Liked about Keto OS

  • It comes in different flavors.
  • It helps in weight loss without losing muscle tissue.
  • It provides energy.
  • It has a wealth of other health benefits.
  • It is backed by scientific evidence.

What I Didn’t Like about Keto OS

  • The taste is not very nice, something that many people have commented on.
  • It is quite expensive.
  • It can lead to side effects, albeit short-lived ones.

The Final Verdict

Keto OS really is a novel product that has been very well-received, and for good reason. With tons of scientific research to back the claims made by Pruvit, and the fact that the company has gone from strength to strength during its four years of existence, it is clear that this is a really good product that many people are benefiting from. Yes, it takes some getting used to, but you will feel so much better for it. It is, therefore, 100% recommended!

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Mary Ennis
Mary Ennis

This product did not work for me… But I recognize that we all are different and react differently to various supplements. The reason for my 1 start trading (would have been 0 if that were an option) is that PRUVIT DOES NOT HONOR THE MONEY BACK GUARANTEE. I have emailed them three times to learn how to return my product and get a refund with no response. They do not have such instructions available on the website, and there is no phone number either. AWFUL COMPANY.


Complete waste of money and taste is awful and upset my stomach.

Scher Sara
Scher Sara

I think I like the product but I will never know as the company won’t call back or return messages or communicate in anyway. They do send email saying how did you like our product? However when you respond they say were sorry you didn’t like our product how can we improve it and I write back call me and then I never hear again and this is gone on for two weeks. I need to be able to communicate with the company that I buy a product from.

Lori Anne Nelson
Lori Anne Nelson

Your independent promoter is the one to ask, or you can email the help centre.


I have been taking Keto OS for a few weeks now and I love it. At the same time started trying the Paleo diet. I have been losing about a pound a day.

Have noticed several wonderful effects. My muscles stopped cramping and always have an amazing mood better energy and focus. Amazing product!


Worked well for me. I didn’t really like the flavor very much but since taking it, have experienced a big boost in my energy levels. Wouldd recommend…