Pruvit Keto OS Review

Pruvit Keto OS Review: Does It Really Work?

Written By : Dr Ruby Shah   ✓ Fact Checked

Pruvit Keto OS is an exogenous ketone supplement that promises better mood, strength, energy, sleep, focus, and fat loss.

(Last Updated on December 1, 2023)

A ketogenic diet has been the most popular weight loss program for years.

It is a high-fat, low-fat diet usually associated with several health benefits including weight loss, better cognitive performance, improved exercises and reduced appetite.

The body forms ketones (molecules) during fat breakdown in low amounts.

But when, these levels go up, primarily due to starvation, ketogenic diet and prolonged fasting, the body goes through ketosis.

Here the body burns fat proficiently for energy.

Due to the popularity of the diet, several keto-friendly dietary products have surfaced.

They promise to offer the benefits of a ketogenic diet without following one.

Pruvit Keto OS NAT is one of them; it claims to take you into ketosis.

But how unique is it from the rest?

In this Pruvit Keto OS NAT review, we will reveal the ingredients used, how it works, any side effects present, if it is a scam and its pros and cons.

Let’s get started.

What Is Pruvit Keto OS?

Pruvit Keto OS NAT is a dietary supplement that aims at making the body produce ketones without consuming a ketogenic diet.

It is an exogenous ketone drink that comes in many flavours.

It comes in powder form and should be dissolved in cold water.

It promises to deliver bioavailable ketones in the body.

It comes in the following flavours Swiss Cacao, Chocolate Swirl, Maui Punch, Orange dream and Raspberry Lemonade.

Flavours come as ‘they are’ or ‘charged’.

Charged means that the drink is infused with caffeine

It is manufactured by Pruvit, a company that specialises in ketone supplements, based in the US.

*NAT stands for Nutritionally Advanced Technology.

Pruvit Keto OS Ingredients

Pruvit Keto OS NAT is gluten and dairy free apart from the Orange Dream version which incorporates a little dairy to support its delivery mechanism.

Here are the main ingredients.

R-Beta Hydroxybutyrate

R-Beta Hydroxybutyrate helps to control ketone levels in the blood.

Keto NAT formula contains a more bioavailable R-Beta Hydroxybutyrate which supports stronger appetite control, improved performance and increased energy.

Thus, it plays a significant role in metabolising fats.


L-Taurine is an amino acid that plays a significant role in protein production, necessary for muscle growth.

This component is vital during your workouts.

Fermented L-Leucine

The body cannot produce L-Leucine. Therefore it should be consumed either from supplements or from food.

It is an amino acid that powers the process of muscle building.

C-Med 100 (Inner Bark of Uncaria Tomentosa)

C-Med 100 is the trade name for AC-11 DNA repair.

It supports rapid repair and recovery of the body, maintains healthy cell function, promotes cell debris removal and aids DNA telomere length to ensure longevity.

Other ingredients
  • Rebaudioside A (Stevia Extract)
  • Erythritol
  • Caffeine (charged version only)
  • Citric acid
  • Vitamin B6 (as pyridoxine)
  • Vitamin B12 (as methylcobalamin)
  • Natural flavour
  • Xanthan gum
  • Beta carotene
  • Vegetable juice color

How Does Pruvit Keto OS Work

The secret behind this supplement is Beta-Hydroxybutyrate ( BHB Salt).

It is an exogenous ketone body that supports metabolising fat into body energy without carbohydrates.

The body produces a lot of BHB when the body goes into ketosis.

Pruvit Keto OS NAT uses water-soluble BHB increasing absorption in the body system within an hour.

They increase ketone levels that support weight loss.

Additionally, Pruvit Keto OS NAT increases appetite suppression and reduces your urge to snack.

This supports fat loss.

The proprietary blends improve cognitive function and increase mental clarity.

How To Use It?

The manufacturer recommends that 2 Pruvit Keto OS NAT packets should be taken daily for the best results.

Each packet should be dissolved in 12 to 16 oz of cold water then stirred vigorously.

Here is the stipulated time, as indicated on the official website.

  • Before 9 am: Take a charged preferred flavour of Keto OS NAT to support optimum performance.
  • During the day: Increase your water intake. They recommended taking equivalent ounces of water to half your weight (in lbs).
  • Before 7 pm: Take caffeine free Keto OS NAT to support improved sleep and body repair.

It can be taken with or without food.

Pruvit Keto OS Side Effects

Pruvit Keto OS NAT is probably safe in healthy people but only when taken for a short period.

There is less information on long term effects.

However, here are some things to consider:

Research shows that individuals who go on a low carb diet may develop Atkins Flu characterised by headaches, irritability, heart palpitation, diarrhoea/constipation, dizziness and fatigue.

Fluid loss may occur if you combine a ketogenic diet with this supplement.

This may come from the breakdown of carbohydrates stored in muscles (glycogen).

Some users are also likely to experience diuretic effects, mild headaches and nausea due to the presence of caffeine.

Consult your physician before taking this exogenous ketogenic supplement if you have:

  • Kidney problems
  • High blood pressure
  • Diabetes
  • Heart disease
  • High cholesterol
  • Liver problems

The manufacturer cautions against using the supplement if you are pregnant, nursing or having a pre-existing medication condition.

They also advocate that you should consult a doctor before using it on children under 18 years.

Is Pruvit Keto OS A Scam?

Pruvit Keto OS NAT is manufactured by Pruvit Ventures, a renowned company in designing ketogenic supplements using ketone technology.

Thus, it is not a scam.

Pruvit Keto OS Reviews & Complaints

Pruvit Keto OS NAT has not received much customer reviews because it is their new upgraded formula.

However, it is on both receiving ends of favourable and unfavourable feedback.

Here are some reviews on Amazon.

Let’s start with the positive ones.

Mark used the Maui Punch Flavor of Keto OS NAT.

This is what he wrote on Amazon:

I have used this several times, and I’ve lost weight quick every time. The flavour is pretty good, but it is too expensive to use regularly. I usually buy it to help speed up my diet after I’ve come off a carb binge for a week or two. No problems are shedding the weight when I use this.

Christin Perry took the Maui Punch flavour charged and was pretty happy with it.

She wrote on Amazon.

I have had very low energy, and I have ADHD anxiety, depression, and always feeling really overwhelmed before taking Keto os NAT […] product has made me feel so much better. I have had way more energy; my anxiety depression was gone I didn’t feel so overwhelmed I felt like I can conquer anything and very feel extremely confident in myself and also very focused, and also it decreased my appetite […] I highly recommend trying this product!!!!!

What about the negative reviews?

An Amazon customer who took Heart Tart flavour had this to say.

Though it’s an excellent product, it’s entirely too sweet. I squeeze a lemon in my drink to counteract the overly sweet taste, and it’s still too sweet. The stevia is overkill.

Nancy was disappointed after taking Heart Tart flavour.

She wrote on Amazon:

Expensive and had zero effect. Save your money.

Rich writes on

I tried pruvit ketones for a month. I didn’t notice any decrease in appetite or body weight.

Pruvit Keto OS: Packages, Prices & Where To Buy It

Pruvit Keto OS NAT is available on the official website:

Each packet contains 20 servings.

How much does it cost?

  • 1 packet of Pruvit Keto OS NAT (20 servings): $130.00 + shipping and handling fee

See below how the official site looks like.

pruvit keto os official website

Refund Policy & Money Back Guarantee

The company offers a 30-day window and up to 90 days to provide a full refund if you are not satisfied with the product, minus the shipping and handling fees.

You are required to return the unused portion of the product.

Pruvit Keto OS Pros & Cons


  • Offers better bioavailability.
  • Dairy and gluten free.
  • Contains C-Med 100( AC-11 DNA repair).
  • Natural fermentation process.
  • High-quality proprietary blends.


  • Relatively pricey.
  • Lack of clinical trial to back its claims.
  • Potential side effects.
  • High levels of sodium.
  • Does not specify the amount of BHB salts.
  • High unsaturated fat.

Pruvit Keto OS Review: Final Words

Using exogenous ketones has become a rising trend lately.

Pruvit Keto OS NAT improves energy levels, increases athletic performance, increase clarity and focus, and suppresses appetite.

There is some scientific evidence that supports the above benefits of using exogenous ketones.

But these studies are limited.

It is an ideal supplement for those looking to reach ketosis faster, boost performance, lose weight and increase mental performance.

We noted that the supplement contains a high amount of sodium.

Therefore you should limit high amounts of sodium in your meals since it may result in Hypernatremia.

Hypernatremia is characterised by increased thirst, bleeding in the brain, muscle twitching, confusion, loss of appetite and weakness.

Finally, Pruvit Keto OS NAT is an excellent fat loss supplement, but it is expensive.

Moreover, there are no clinical trials that support their claims.

Therefore we cannot tell if they work like a ketogenic diet.

We laid out the facts, will you buy Pruvit Keto OS? Comment below and tell us what you think!

One Reply to Pruvit Keto OS Review: Does It Really Work?

  1. I just started the Keto//OS NAT dietary supplement, I’m 75yrs old and I do like the way this product makes me feel. I do have more energy, an typically feel more alert, my weight is currently 158#, my goal is 138#, if I can achieve my goal, I will be completely sold on this product.
    I have a friend, she lost 70# using Keto//OS NAT, took her 7mths and believe me she looks like a rock star, wearing size 2-4 !
    I’ll be quite watchful about increasing my need for fluids, especially H2o…

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