SlimFast Keto Shake products on leafy background

Recently, I’ve been looking for new flavors to switch up my current selection of keto meal replacement shakes. During my search, I came across some positive feedback on SlimFast Keto Meal Replacement Powder. Intrigued by all the positive buzz, I decided to give this keto shake a shot. I wanted to see if it really lived up to its claims.

Are you curious to know what I discovered? To uncover the answer, I invite you to peruse my comprehensive review of SlimFast Keto Meal Replacement Powder. In this review, I delve into the key ingredients, provide instructions on consuming it, and discuss any potential drawbacks. But before digging down into this keto shake in detail, let’s talk about the company.

Company Overview

Since its establishment in 1976 by S. Daniel Abraham, SlimFast has been a reputable name in the diet and weight loss industry, helping clients on their weight loss journeys. For the purpose of providing their consumers with better service, SlimFast completed a rebranding initiative in 2013 that involved upgrading their shake bottles, packaging, and other materials.

Besides different wellness supplements like ready-to-eat and drink meals, drinks, and snacks, they even offer a range of meal plans to suit whatever weight loss goals you’re gunning for. Their main aim? Helping folks shed those extra pounds pronto, promising you’ll start seeing the difference in just a week.

Introduction to SlimFast Keto Meal Replacement Powder

SlimFast Keto is all about catering to those folks who are on that high-fat, low-sugar, low-carb ketogenic diet. One of their standout products is the Keto Meal Replacement Powder, which has been turning heads for its promise to help your body hit that fat-burning ketosis state.

The best part? This shake is gluten-free and doesn’t have any artificial sweeteners, flavors, or colors. It’s crammed with keto-friendly ingredients like grass-fed butter, MCTs, whey protein, and collagen. They aim to help keep those on a ketogenic diet on track with their nutritional goals without sacrificing flavor or nutrition. The goal is simple – an easy, healthy option that tastes great.

SlimFast Keto Shake, spoon of powder and shaker on white background

SlimFast Keto Powder Rating











Sugar <1g
Dietary Fiber0g
Cholesterol20 mg
Vitamins & MineralsYes
Sugar AlcoholsYes
Artificial SweetenersNo
Controversial IngredientsNo

Nutrition Overview Key Ingredients Breakdown

The SlimFast Keto Meal Replacement Powder offers a dreamy blend of creamy flavor, making it a quick on-the-go treat or a lazy Sunday afternoon indulgence. But, before you dive in, it’s essential to take a closer peek at the ingredients. Why? Because the basic elements and key macro ratios can change from brand to brand. Just because one keto shake fits your diet doesn’t mean they all will. The smartest move is to really get to know the crucial components – the macronutrients and the base ingredients – of the shake.


Before we look into the main macros of this shake, let’s take a closer look at its calorie content. A 2-scoop serving of this shake contains 190 calories, which falls in the middle range—not too high, yet not as low as it could be. For effective weight loss, most experts suggest aiming for around 100 calories per shake serving of your keto protein powder.

But fear not, as you can still incorporate this keto shake into your weight loss journey and stay on track with your keto diet. Just be mindful of the other ingredients you add to it, ensuring they don’t push you over your daily calorie limit per meal. Additionally, while enjoying this keto shake, you can complement it with low-calorie side dishes like cauliflower mac and cheese, cheese bread, or creamed spinach.

Main Macronutrients

Regardless of the diet you’re currently following, keeping track of your Macronutrients is essential for maintaining a balanced weight. And when it comes to the keto diet, it becomes even more crucial as it emphasizes low carbs, high fat, and a moderate amount of protein on a daily basis. So, let’s take a closer look at the macronutrient content of this specially crafted keto shake.


Let’s take a look at the carb count in each SlimFast Keto Shake, which comes to 8g total per serving. There’s no fiber but 3g of sugar alcohol called erythritol. This brings the net carbs to 5g per serving, which might not be as low as some other keto protein shakes.

For weight loss and staying in ketosis, it was typically recommended to aim for 1-2g of net carbs per serving with your keto protein powder. So, if you want to use this keto shake as a complete meal, you’ll need to cut off other unnecessary carbs and focus on incorporating only minimal amounts of low-carb meals.

However, while consuming any keto shake, experts always prioritize over having fiber content. Fiber plays a vital role in any diet, and it’s particularly important on keto as it helps prevent digestive issues that can arise when you don’t consume enough fruits and vegetables.

Having enough fiber in your shake ensures you still get this essential nutrient, even when you’re on-the-go and leading a busy keto lifestyle. Since this shake lacks any fiber-rich elements, it’s essential to supplement your diet with more fiber-rich foods while consuming this keto shake.

On the bright side, the shake contains the ketogenic-friendly sugar alcohol Erythritol, which research suggests has minimal impact on blood glucose levels and causes few GI issues. While using this shake, it’s essential to observe its effectiveness on a trial-and-error basis to see if it works well with your keto diet goals.


Fat takes on important significance when discussing keto protein shakes. For those pursuing the ketogenic diet: the 15g of fat that the SlimFast keto shakes provide each serving is a significant and suitable quantity.

Included in this keto drink are:

  • 1.5g of polyunsaturated fat
  • 6g of monounsaturated fat

Both of which have a reputation for having beneficial effects on health. These fats are viewed favorably and assist your health in significant ways.

On the other hand, this shake also includes 8g of saturated fat. While ingesting modest levels of saturated fat often doesn’t offer any serious dangers to overall health. Prolonged and excessive ingestion may be problematic. Consequently, while consuming this shake as a meal, it’s crucial to balance your diet by including additional sources of healthy fats.


Following fat, the next crucial element on a ketogenic diet is the protein content in each shake. Research shows that diets rich in protein contribute to greater weight loss. Additionally, protein plays a significant role in keeping you satisfied, enhancing your metabolism, and providing both physical and mental energy.

However, this particular shake contains only 8g of protein per serving, which is relatively low for a meal replacement shake. To maximize its benefits, you may want to add additional healthy protein sources. Incorporating healthy and satisfying protein meals like: Spicy Cottage Cheese Pasta, Brown Sugar BBQ Whole Roasted Cauliflower, or Cilantro Lime Chicken Rice Bowl will help you boost your protein intake and make the most out of this shake’s potential.

Base Ingredients

Now that we’ve covered the macronutrient overview of SlimFast Keto Meal Replacement Powder let’s take a closer look at the ingredients list of this shake to determine its relevance to your keto plan.

Fat Mix

SlimFast shakes have an MCT Oil blend in their fat mix, which is made of palm, coconut, and grass-fed butter. These nutrients support heart health and general wellness.

It’s crucial to note that the shake has a lot of saturated fat, like palm oil, which has long been linked to an elevated risk of heart disease. Coconut oil, which is similar in that it also includes saturated fat and may cause heart problems if consumed in excess.

On the plus side, the lauric acid in Coconut oil, which has been connected to a lower risk of heart disease and has antiviral characteristics, is present in the coconut oil in the shake. When ingested in moderation, this might have some advantageous health effects.

Protein Blend

Regarding the type of protein used in each SlimFast Keto Shake, it consists of a blend of whey protein concentrate, whey protein isolate, and grass-fed collagen peptides. While all of these are nutritious and beneficial options, they are not plant-based proteins.

Plant-based proteins offer a comprehensive range of nutrients that align with what you should get in a well-balanced, healthy meal. Not only do they tick all the boxes in terms of essential nutrients, but studies also indicate that they contribute to muscle-building and aid in weight loss.

Moreover, plant-based proteins are often the viable option for individuals who are lactose intolerant and cannot consume dairy products. Unfortunately, the SlimFast Keto Shake contains whey protein concentrate, the animal-based and least processed form of whey and contains the highest amount of lactose. As a result, this shake is not suitable for those with lactose intolerance.

Vitamins Minerals

The vitamin and mineral composition of keto meal replacement shakes is another important consideration. These shakes are essential in supplying the nutrients required to prevent deficits since the keto diet calls for eliminating a number of foods.

From this perspective, adding SlimFast Keto Meal Replacement Powder appears like a win-win choice because it includes a thorough blend of 24 vitamins and minerals. Satisfying a substantial amount of your daily nutrient needs.

It’s important to note that this particular option lacks additional superfood blends or extra nutrients. It’s intended to enhance immunological and digestive health, in contrast to certain other nutritious keto shakes.

Available Flavor Options

SlimFast Keto Meal Replacement Powder comes in three flavors: Fudge Brownie Batter, Vanilla Cake Batter and Creamy Coffee Cappuccino. In contrast, the regular keto shake comes in more flavor options.

My SlimFast Keto Meal Replacement Powder Experience Story

I decided to give the SlimFast Keto Meal Replacement Vanilla Cake Batter Powder a try as I had heard positive reviews about it. The first thing that caught my attention was the delightful flavor – Vanilla Cake Batter. I have to admit, the taste was fantastic, and I found myself looking forward to my shakes each day.

When it came to preparation, I was pleased that the powder mixed easily in the blender. It saved me time, and the consistency was just right when blended well. The convenience of having a quick and tasty meal replacement option was a definite plus.

However, my excitement was dampened by a couple of issues I encountered. One major downside was the aftertaste. I found it to be really bad and almost unbearable. It left an unpleasant lingering flavor that I couldn’t shake off, which took away from the overall enjoyable experience.

Another problem I faced was with the texture when I tried mixing the powder into cold water. The shake turned out to be too thick, making it less enjoyable to consume. It would have been great if it could blend more smoothly with cold water for a refreshing experience.

What bothered me the most was the overwhelming sweetness of the shakes. They were just too sweet for my liking, making them challenging to swallow at times. I wished they had toned down the sweetness to make the shakes more palatable.

How to use SlimFast Keto Meal Replacement?

Combine two scoops (inside of the container) of delicious shake mix with 8 fl oz of cold water in a shaker cup or blender.

Who Should Buy?

  • Person who is currently following a low-carb diet
  • Those who want to boost their vitamin and mineral uptake
  • Person who has gluten sensitivities

Who Shouldn’t Buy?

  • People with sensitivities to milk and soy.
  • Those who are currently following a plant-based diet.
  • Those who want to boost their protein intake.

Possible Health Benefits of SlimFast Keto Meal Replacement

May curb your hunger: As I mentioned earlier, this shake has MCT oil in its Fat mix. Which may limit your hunger and may induce your ketosis.

Possibly increase vitamin mineral uptake: This shake contains more than 20 different types of vitamin mineral. Which may increase your nutrient uptake.

Ideal for gluten-free diet: According to what the label’s telling us, this shake is totally free of gluten – so it’s a fantastic pick if you’re living that gluten-free life!

Potential Downsides and Consideration

Not ideal for a plant-based diet: If you’re sticking to a plant-based diet like a vegan or vegetarian, heads up! This smoothie may not be your best bet as it’s got animal-based stuff like whey protein isolate and whey protein concentrate in it.

Contains milk and soy: Based on product labeling, this shake has both milk and soy. So those who have sensitivities to these particular ingredients may not take this.

Has a limited amount of protein: As I mentioned earlier, this keto-friendly shake has a very limited amount of protein. Which may not be suitable for those who want to develop their muscle mass. This was a big downside for me, personally.

Possibly cause digestive problems: This shake doesn’t have any fiber content and may contribute to digestive issues if you don’t take fiber-rich veggies with it. That is a bit of a turn off since there are many on the market that have substantial fiber.

Price and Buying Options

You can find SlimFast Keto Shakes at large retail stores such as Walmart, Target, and Costco, as well as online. On SlimFast official website, SlimFast Keto Meal Replacement Shake goes for $21.99 for a container with 10 servings. If you save and subscribe, you can get 10% off.

List of Other Products by SlimFast

In addition to Keto meal replacement drinks, the company also sells a variety of other goods, such as:

  • SlimFast Advanced Nutrition Shake
  • SlimFast Original Shakes
  • SlimFast Advanced Energy Shakes
  • SlimFast Keto Meal Bars
  • SlimFast Intermittent Fasting Complete Meal Bars
  • Sweet Crunchy Snacks
  • SlimFast Essentials like Apple Cider Vinegar Gummies, SlimFast Keto Metabolism Support Tablets, SlimFast Organic Greens Powder etc.


Can I use the SlimFast keto shake as a weight-loss supplement?

Based on the company’s website, it can be used as a weight loss supplement as it is low in carbs with no added sugar.

How much weight can I lose on SlimFast Keto?

The SlimFast Plan is intended to provide a total intake of 1,400–1,600 calories per day for men and women respectively. It causes a weekly energy deficit that should lead to a weekly weight loss of 1 to 2 pounds.

Do you use milk with SlimFast?

Yes, you can combine your SlimFast smoothie powder with dairy substitutes like almond milk, soy milk, coconut milk, and cashew milk.

Can I use SlimFast for 3 meals a day?

To maintain weight loss, the brand recommends you follow their maintenance plan and continue to replace one meal a day with a SlimFast meal replacement shake or bar and eat sensibly for the remaining two meals, including 1-2 low-fat snacks in your daily diet.

Final Thoughts

For a satisfying supplement to a ketogenic diet, the SlimFast Keto Meal Replacement Powder provides a good flavor alternative. However, when determining whether this shake is the correct fit for one’s taste preferences and nutritional goals, one should take into account the unpleasant aftertaste, problematic texture, and excessive sweetness.

There are other drawbacks, as I mentioned before, like the lack of adequate fiber compared to other shakes on the market that are designed for a Keto lifestyle.

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RV Team
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