Is Aspartame Keto Friendly?

  • Author: Katie
  • Date: October 9, 2022
  • Time to Read: 5 min.

Is aspartame keto friendly? Sugars on keto are probably one of the most confusing things to get your head around when transitioning onto a keto diet. We’ve got everything you need to know. From which sugars are, and are not, keto friendly, what % you can deduct from your carb count and so much more.  So, less talk, more action, and let’s find out, is aspartame keto approved?

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Let’s cut to the chase, Aspartame is not keto friendly.

That does not mean that you cannot still enjoy sweet treats on keto.

There are plenty of keto friendly sweeteners available for your keto cooking, baking, and candy making. You do not have to miss out.

Keep reading and we will take you through which sugars are keto friendly, and which to avoid. We will also guide you through what polyols are and when and how much you can deduct from your total carbs in order to calculate your net carbs.


Finally, we will take you through which are our recommended keto sweeteners that you can enjoy guilt free, whilst keeping your body in ketosis and fat adapted.

If keto is new to you, why not check out our keto beginners guide. There are a lot of acronyms and terminology used in the keto world that can make it feel like you are having to learn a new language. Don’t worry though, we’ve got you covered with our articles on keto abbreviations and keto terms explained.

Getting your keto sugars right will help you on your keto journey and help you achieve your goals.

So, let’s get into it is aspartame keto friendly?

What is Aspartame

Aspartame is s disaccharide (meaning it is made up of two sugars). IA the case of aspartame, it is made up of glucose and gaaspartame. A growing number of people are identifying that they are actually intolerant to aspartame.

Glycaemic Index of aspartame

The Glycemic Index (GI) is a way of rating carbohydrates. All sugars are carbohydrates.

The GI is rated from 0-100. In simple terms, it measures how quickly a food will affect your blood sugar(glucose) levels when you eat that food, or in the case of sugars, normally a food that contains the sugar. 

If you have been living a keto diet for any time, you will likely know that one of the main aims is to maintain static blood sugar levels. It is the spiking up of blood sugar levels that leads to that euphoric feeling, followed by a feeling of hunger, which makes you want to eat more.

It is by controlling these blood sugar levels which prevents cravings for further sugary foods

If you have diabetes or know somebody who has, they are probably very conscious of the GI value of a food as they will use this rating to help control their blood sugar levels.

Foods scoring zero, or as close to zero as possible, will not spike your blood sugar levels. These foods are broken down more slowly. Foods that are closer to the higher end of the GI are broken down quickly in the body causing a rapid increase in blood glucose levels.

This is also known as a ‘sugar rush’. Once this ‘rush’ has peaked, we then start to feel rubbish in ourselves and crave another ‘rush’ to make us feel good again.

It is for this reason that sugars are limited on the keto diet, if not your blood sugar levels would constantly be yo-yo-ing. This is not healthy for anybody. More importantly, it will make it very difficult for your body to remain in a state of ketosis.

In this article, we will take you through which sugars to avoid and which ones are safe to consume.

If you are interested in finding out more about keto sugars, check out our ultimate guide to keto friendly sugars, which will take you through everything you need to know.

So let’s look at the question, is aspartame keto friendly?

Is Aspartame Keto Friendly?

Let’s look at t a few key facts about Aspartame so we can better understand whether it is keto friendly or not.

Type of Compound: Artificial Sweetener

Chemical Formula: C14H18N2O5

Glycemic Index Score: 0

FDA Approved?: Yes – Aspartame is approved by the FDA for consumption

What Foods is Aspartame Normally Found In?

Sugars are used in a wide variety of goods in order to add flavor. Often these sugars are hidden in foods that you would not expect to find them in.

Some of the foods in which you are likely to find Aspartame are;

  • sugar-free cereals
  • yoghurt
  • pudding
  • jams
  • jellies
  • ice cream
  • desserts
  • nutritional bars

How Many Net Carbs are there in Aspartame?

Net carbs and the total amount of carbohydrates found in food that is digested in the body and used as energy.

Net carbs are calculated by subtracting fiber from the food’s total carb count.

For more on net carbs and how to calculate these check out our article which is dedicated to net carbs.

Net Carbs in Aspartame [per 100 grams]

There are 89g grams of net carbs found in Aspartame.

How Sweet is Aspartame?

Sweetness is compared to granulated sugar, aka table sugar.

Table sugar is classified as 100%.

So, if a sugar is recorded as being 50%, that means that it is 50% (half) as sweet a table sugar. If something is recorded as being 1000%, this means that it is 10% as sweet as table sugar.

Aspartame is recorded as being 120-220%.

This means that Aspartame is a lot sweeter than table sugar.

So, Is Aspartame Keto Friendly?

So far, we have been through what Aspartame is, the GI of Aspartame, and how many net carbs we can expect from the sugar, but, is aspartame keto friendly?.

Aspartame is NOT keto-friendly.

Although low on the GI, and not likely to kick you out of Ketosis, Aspartame is not keto-friendly because it has been linked to side effects such as increased appetite, weight gain, and other metabolic health problems.

Now you are a master of keto sugars, why not have a think about what your keto goals are and set a plan as to how you are going to achieve them to smash your NSVs.and truly enjoy the benefits of the keto diet .

Still want to know more about keto sugars? Click on the sugar you are interested in below in order to find out more.

Keto Approved Sugars

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