Using an exogenous ketone supplement, like Pruvit Keto OS, may help you achieve ketosis faster, suppress your appetite and lose weight. 

We’ve taken an in depth look at Pruvit Keto OS (short for operating system) products and how they compare to other exogenous ketone supplements. 

What is Pruvit Keto OS?

Pruvit Keto OS (Ketone Operating System) is a ketogenic supplement drink. It is designed to elevate blood ketone levels, which are naturally produced by the body for fuel. 

On traditional diets, your body uses carbohydrates for energy, by converting carbohydrates to glucose. On carbohydrate restricted diets, such as the keto diet, your body burns fat for energy instead of carbohydrates. 

pruvit keto os

During the process of burning fat, ketones are produced by the liver.

This also happens during periods of fasting or starvation.

Your body then uses these ketones for energy production. 

An exogenous supplement (exogenous meaning produced external to the body), helps provide your body with ketones to reach a state of ketosis faster, or maintain ketosis when following a low carb high fat (LCHF) diet, such as the ketogenic diet. 

Other benefits of exogenous keto supplements such as Pruvit Keto OS when used in conjuction with a ketogenic diet are greater weight loss, management of diabetes, appetite suppression and memory enhancement.

Take a look at this short video which explains ketones and the state of ketosis:

Keto OS is a powder that comes in both bulk containers and single serve packets for convenience. Keto OS is available in both a ‘CHARGED’ version and standard or non-charged version. The only difference here, is the ‘CHARGED’ version contains caffeine.

One serving is meant to be mixed with 12 to 16 ounces of cold water and taken once or twice a day for optimal performance. 

What is Keto OS NAT?

pruvit keto os nat

Keto OS NAT is the updated version of Keto OS, introduced in 2019. 

NAT stands for Nutritionally Advanced Technology. Pruvit have used a naturally fermented process to create a keto supplement that is as close as possible to ketones produced by the human body. 

Take a look at this 3 minute you tube video:

Keto OS NAT contains Inner Bark of Uncaria Tomentosa, also known as the herb cat’s claw. This has been patented by Pruvit as C-MED 100.

Pruvit claim that C-MED 100 promotes DNA repair. We went searching for studies linking the Inner Bark of Uncaria Tomentosa with DNA repair. We did find this study linking Inner Bark of Uncaria Tomentosa with use in osteoarthritis patients, showing a reduction in pain during activity. 

We also found some very important information on when you should never use the Inner Bark of Uncaria Tomentosa, Cat’s Claw or C-MED 100 (whichever name you would like to call it).

This product is not for use during pregnancy, if you have any autoimmune disorder or disease and Leukemia.

Click here for a link to our source for this information. 

keto os

What is Pruvit Keto Max?

pruvit keto os max

Pruvit Keto Max is an older name, which has now been replaced by Pruvit Keto NAT. There is also a slight difference in the ingredients between Pruvit Keto MAX and Pruvit Keto NAT.

Pruvit Keto MAX contains no C-MED 100 (as above, also known as cat’s claw or Inner Bark of Uncaria Tomentosa). Please see our paragraph regarding contraindications of this herb.

In 2020, Pruvit Keto Max no longer appears on the Pruvit website. You can still find Pruvit Keto Max on Amazon in some flavors, in both CHARGED (includes caffeine) and caffeine free versions. 

The caffeine in Pruvit Keto products is equivalent to one 12 to 16 ounce cup of coffee.

What is Keto OS Pro?

pruvit keto os pro

Pruvit Keto OS Pro is a combination of exogenous ketones, medium chain triglycerides and C-MED 100. 

Medium chain triglycerides (MCT) are very good for your body, converted into ketones by the liver almost instantly and despite being a fat, do not cause fat gain. To learn more about MCTs read this post

Pruvit Keto OS Black Label

pruvit black label

Pruvit Keto OS Black Label is the latest offering from Pruvit for 2020. 

The black label series has a larger amount of beta-hydroxybutyrate (BHB) blend in it than Pruvit Keto OS NAT. The difference is 17.3 grams of BHB blend in Pruvit Black Label, compared to 12.6 grams of BHB blend in Pruvit Keto OS NAT.

Pruvit Keto OS still contains C-MED 100, and also contains L-Taurine, Fermented L-Leucine and Black Fulvic Acid Powder, as well as erythritol, natural flavors, citric acid, stevia extract, caffeine and xantham gum.

keto os reviews

It is concerning how much sodium Pruvit Keto OS Black Label has. 

The sodium content of this product is 1270mg per serve.

Sodium is important for our bodies. It is an essential nutrient required to maintain the volume of plasma, helps cells function normally, contributes to our bodies balance of acids and bases and helps with transmission of nerve impulses.

But how much sodium is too much?  The World Health Organization recommends no more than 5 grams of salt per day. This is the equivalent of 2 grams of sodium.  

Two servings of Pruvit Keto OS Black Label per day is instantly be greater than 2 grams of sodium per day.

How to Use Pruvit Ketones

Exogenous Ketones are great to use if you are looking to get in Ketosis quickly. After all, who doesn’t want more energy, focus and control over their cravings?

Pruvit recommend taking their ketone supplements twice a day. Generally, you take a ketogenic supplement first thing in the morning, then again in the mid afternoon (that time around 3pm when you would usually reach for a chocolate bar…).

It is up to you whether you want to use Pruvit Keto OS once per day, or twice per day. 

If you are exercising, you could also consider using a ketogenic supplement prior to exercise for that extra boost.

Before you buy a ketone supplement you should ask yourself the following questions:

Are you already on a Ketogenic Diet?

If you’re on a Ketogenic Diet then taking an exogenous ketone will help your body get into ketosis quicker and help burn fat and boost your energy. However, if you’re not on a Ketognic Diet and are just looking to burn fat and get energy, taking a Ketogenic supplement could be a waste of your money. 

What’s inside the supple​​​​ment?

Does it have actual Ketones or does it just say it’s Keto? Also you’ll want to avoid unnecessary additives that can throw off your diet.

Are you testing your ketone levels?

If you’re not, it is advisable that you do, so you can see how much exogenous ketones you should take to get yourself in ketosis. You might find a sweet spot for your body where you feel great while you have lots of energy.

Remember to treat exogenous ketones as a tool, and not a replacement for a clean Ketogenic Diet. If weight loss is your goal, you should not load up on a carb laden meal, then follow it with a ketogenic supplement such as Pruvit Keto OS to put you back into ketosis.

This is not good practice and simply promotes an unhealthy lifestyle. Take a look at our favorite ketogenic cookbooks and use exogenous keto supplements such as Pruvit Keto OS in conjunction with a balanced keto diet.

Keto in Five

Benefits of Pruvit Keto OS

The main benefit of Keto OS is the claim that it will allow you to get to a nutritional state of ketosis within 60 minutes of consuming the drink. But what does this mean to you?

Can Help You Reach Ketosis Quickly

Keto OS contains both beta-hydroxybutyrate and MCT powder. Combining beta-hydroxybutyrate and MCTs has shown to effectively raise levels of ketones in the blood without dietary change.

This can help you enter a state of Ketosis which has been associated with many beneficial effects such as greater appetite control, weight loss and protection from diseases such as diabetes.

May Help You Lose Weight

Studies have shown that n increase in ketones in the body have been linked to a reduction in appetite. Therefore supplementing with an exogenous Ketone like Keto//OS can be potent way to reduce your appetite.

Can Help You Beat The Keto Flu

The Keto Flu are symptoms such as nausea and fatigue that can occur when you first start a Ketogenic Diet. By raising ketone levels, Keto OS can help overcome those symptoms. 

May Prevent Effects of Aging on The Brain

Exogenous ketones have been shown to  help improve mental function in numerous studies. One promising area that is being researched is people with Alzheimers disease.

An increase  BHB levels in these memory impaired adults lead to an improvement in cognitive performance.

Research has also suggested that exogenous ketones help reduce neurological damage related to Parkinson’s disease and epilepsy.

Can Help Endurance

Exogenous ketones have been shown to help athletes run further than athletes who drank carbohydrates or fats.

This is because being in Ketosis can help prevent the depletion of glycogen levels, which means Keto OS can help you run longer and work out for longer periods of time.

Pruvit Keto Side Effects

Pruvit Keto OS just like any other exogenous supplement, and should be taken in consultation with a doctor. If you have any medical conditions such as diabetes, ketone supplements like Pruvit Keto OS can reduce blood sugar levels. It is important to keep your general practitioner informed and monitor your blood sugar levels closely.

What are the other potential side effects?

  • Stomach distress (aka diarrhea) – Keto OS is known to sometimes cause stomach issues. Start with a small dose and work your way up.
  • Bad Breath aka Ketosis breath – Elevated ketone levels can cause you to produce bad breath. Its not that bad, an is actually a little sweet. It is otherwise known as acetone breath. Keep some sugar free mints on hand.
  • Taste – The biggest complaint of Keto OS (and other exogenous ketones) is the unpleasant taste. We won’t sugar coat it, Pruvit Keto OS takes some getting used to in terms of taste.

Can You Buy Keto OS Samples?

pruvit keto os nat

Pruvit Keto OS is available in single serve sachets, usually sold in packs of 5 or more. You can find them easily on Amazon. This is a cost effective way to try out these exogenous supplements without having to buy a whole tub.

Is Pruvit Keto OS the Best Exogenous Ketone Supplement?​

In our opinion, no. There are other exogenous ketone supplements on the market that are similar to Pruvit Keto OS and far more cost effective to purchase. One of the biggest turn offs for us about Pruvit Keto OS is the price. 

At around $6 to $8 per serving, Pruvit Keto OS is expensive. 

Take a look at these products below, which are more cost effective, and have similar levels of BHB’s as Pruvit Keto OS:

Key Keto v’s Pruvit Keto OS

11.1 grams of BHB per serving in Key Keto v’s 12.6 grams of BHB in Pruvit Keto NAT. 

Key Keto is caffeine free, has much less sodium per serve and less carbs per serve.

Zeal Naturals v’s Pruvit Keto OS

13 grams of BHB per serving in Zeal Naturals v’s 12.6 grams of BHB in Pruvit Keto NAT. 

Zeal naturals is caffeine free, very low sodium, but is high in calcium. It has 2 grams of carbs per serve and is much more cost effective than Pruvit Keto OS.

Perfect Keto v’s Pruvit Keto OS

11.4 grams of BHB’s per serve in Perfect Keto v’s 12.6 grams of BHB’s in Pruvit Keto OS. 

Half the price of Pruvit Keto OS (although more expensive than Zeal Naturals and Key Keto) and tastes great. Depending on the flavor, between 2-3 grams of carbs per serve, as it is sweetened with monk fruit. 

Also Try a Real Ketones Sample Pack

real ketones