Exogenous Ketones: Pruvit Keto OS vs Perfect Keto

Exogenous Ketones: Pruvit Keto OS vs Perfect Keto

This post may contain affiliate links. For more information, see my disclosures here.


Pruvit and Perfect Keto are two separate companies that create exogenous ketones supplements to use while on the Keto diet.  Because of their additional health benefits, described in more detail below,  many people, including myself, have come to use them every day. Here’s why…


What are exogenous ketones?

During a ketogenic diet, the liver naturally produces ketones internally – these are called endogenous ketones. Exogenous ketones are ketones that come from an external, or synthetic source – not made by the body. These exogenous ketones give us another tool to fuel our bodies. When we use these exogenous ketones, it allows our body to enter ketosis when it would not otherwise occur naturally. Stated another way, the body can use ketones to produce energy to partially replace energy from carbs or fats. One important fact to remember is that ketones don’t cause weight loss, rather, they help cause ketosis. Think of it as being in a fasting state where your body is burning your fat for energy.

What are the benefits of ketosis?

-Increased burning of fat
-Hormone Regulation
-Appetite Suppression
-Blood Sugar Regulation


Why use exogenous ketones supplements?

The reality is that it can be hard to maintain ketosis. Exogenous ketones can give you that extra “bump” to help you stay on track. They can help with cravings and keep you from going to fridge to sneak that non-keto food at night! Additionally, ketones can provide the following health benefits:

-Help avoid the Keto Flu. When our bodies transition from using carbs to using ketones for energy, there can be side effects such as low energy, bloating, irritability, headaches, and fatigue. This is commonly referred to as “the Keto Flu.” Luckily, this is a temporary thing until the body gets used to the change. As well, using ketone supplements can reduce these side effects by supplying the body with the energy it’s searching for.

-Reduce “brain fog”, increases energy and ability to focus. From our own personal experience, my husband and I notice a dramatic improvement in our mood, energy and ability to focus when using ketone supplements. For this reason, we continue to use keto supplements daily, even though I follow a strict Keto diet and my husband doesn’t.


Types of Ketone Products:

  • Ketone Esters– Raw ketones that are great for energy, but don’t taste very good.

This is why Perfect Keto and Keto OS came up with:

  • Ketone Salts– ketones bonded to a salt for rapid energy and much better taste! (Perfect Keto Base and Keto OS are both ketone salts)
  • Ketone Oils– Medium Chain Triglyceride that help produce ketones naturally


Are exogenous ketones safe? What about side effects?

My husband and I have been using ketone supplements daily for over two years now, and the only side effect that we’ve noticed is a minor increased urination frequency. This is a known side effect and is a natural reaction while your body flushes out glycogen stores during ketosis. Other people have complained of minor stomach discomfort, but we have not experienced this.


How do they taste?

This is probably the #1 most question regarding Ketone supplements and it literally comes down to a matter of “taste!” If you read reviews online, there are many people who complain about the taste of the supplements. This is one reason companies continue to improve on their “formula” while also offering new flavors to try. While I’m not a fan of all the flavors I’ve tested, for example I do not like the taste of Perfect Keto Peaches and Cream, I have enjoyed the taste of most of the other products. My favorite is the Orange Dream from Keto OS. My husband uses the caffeinated version of Orange Dream and I use the non-caffeinated version. The powders are extremely concentrated, and can taste ‘syrup-y’ if you don’t use enough water. We’ve found that the trick is to water them down with ice water until you reach a taste that’s pleasant for you. Personally, I use 1/2 scoop of Keto OS in a 32-ounce water bottle with lot of ice.

We also both like the flavor of Chocolate Sea Salt from Perfect Keto, which, judging by the reviews, is probably one of the most popular of all Ketone Supplements! (See, it’s a best seller on Amazon!) I would recommend either. Ultimately, the best approach is to try a few products until you find one that tastes best for you.


keto friendly beverages keto OS keto friendly beverages perfect keto


Exogenous ketones Comparison

Pruvit Keto OS 

Keto OS, from Pruvit, offers several Keto supplement products, including Orange Dream (most popular) and Chocolate Swirl. One of the main differences between Pruvit and Perfect Keto, is that Pruvit offers caffeine in some of it’s products. They call this out with the title “Charged” (i.e. “Charged” means it has caffeine!) So, be sure to check the label to make sure you’re getting the one you want. Another major difference, is that the Pruvit products have a slightly higher carb and calorie count vs Perfect Keto (see chart below from Perfect Keto). People who exercise regularly, like my husband who is a daily runner, tend to appreciate these extra carbs as they help him re-fuel after a workout. If you’re not working out regularly, then this might be less of an issue for you.

Perfect Keto

Perfect Keto Base has 2 different product offerings: Chocolate Sea Salt and Peaches and Cream. One of the main differences between Perfect Keto and Pruvit Keto OS, is that Perfect Keto products have much lower carb counts (usually zero!). Another area where Perfect Keto seems to stand out is price. Their Keto Base is approx. half the cost of Pruvit Keto OS. I believe this is one reason why their product gets recommended more over Pruvit’s. However, if you look at the servings per container on each label you will find:

-15 servings for Perfect Keto
-30 servings for Keto OS

So, yes, Perfect Keto is half the price, but you’re also getting half the servings! I’ve read people recommending Perfect Keto over Keto OS just for this reason, and I’m not really following their logic. Regardless, if you’re just starting out, with it’s lower entry point, Perfect Keto might be a good option.



exogenous ketones





These supplements are used to help you during your keto diet. However, they alone, will not magically make you lose weight! You still need to follow a strict keto diet and meal plan. As mentioned above, my family uses both the Perfect Keto Chocolate and Pruvit Keto OS Orange Dream (caffeine and non-caffeine). The extra carbs from Keto OS can be great after a workout, while the zero carbs from Perfect Keto help us stay even closer to our Keto diet goals. As these products aren’t cheap, if you’re just starting out, it might be best to go with Perfect Keto, as you can test it out at a much lower price. Just be mindful that you aren’t necessarily getting a better deal (the servings per container are actually equal.)


Where to buy exogenous ketones?

The easiest way to buy is through Amazon. Click here for current price on Pruvit Keto OS and click here for current prices on Perfect Keto.


keto friendly beverages keto OS keto friendly beverages perfect keto



Leave comment

Your email address will not be published. Required fields are marked with *.