Kirkland Signature Protein Bar

Kirkland Signature Protein Bar Review

Kirkland protein bars, commonly known as Costco protein bars, offer a tasty and convenient option. With a healthy 20 grams of protein per serving, I thought the chocolate cookie taste was the best of the four. Many proteins have a great flavor, but they make chewing a chore because they adhere to your teeth and feel gluey. There aren’t many protein bars on the market that provide the greatest tastes and eating experience. Kirkland from Costco is one brand that has both attributes in a protein bar, according to my research.

Kirkland protein bars are available at Costco in four distinct varieties; I really like the chocolate chip cookie taste. It has a great flavor and is simple to consume, chew, and digest. Protein bars are a go-to snack that provides a solid protein source, moderate carbohydrates, and some important vitamins and minerals. Our Kirkland Costco protein bar review will look at four distinct elements: protein content, total macro content, flavor, and chewing/eating ease.

This is our complete Kirkland Protein Bars review, in which we examine these Costco nutritious snacks to discover how effective they are and whether they are a good option for you. Costco’s protein bars have a love-hate relationship with them, and they’ve been known to switch them up from time to time. Kirkland Signature Protein Bars, according to its latest edition, are:

Kirkland Protein Bars Discontinued

Kirkland Signature Protein Bar

Yes. Kirkland Protein Bars were briefly withdrawn in early 2018. The product was unavailable for a few months, probably to allow old stock to sell out before the new recipe was introduced. Kirkland Signature Protein Bars were reintroduced in July 2018, albeit with some notable modifications.

Not only were certain features of the bar altered during the procedure, but so were the tastes. After the changeover, the Cinnamon Roll taste did not return to the shelves. Kirkland Protein Bars have also vanished from other retailers, such as, and have yet to reappear.

Kirkland Signature Protein Bar Review


Kirkland Signature Protein Bar
View prices for this protein bar!


Kirkland Protein Bars New Flavors

  • Chocolate Chip Cookie Dough
  • Chocolate Brownie
  • Cookies and Cream
  • Chocolate Peanut Butter

As previously stated, varieties like Cinnamon Roll and Cookies and Cream appear to be discontinued and are no longer available through Costco, Amazon, or any of its sellers.


Kirkland Signature Protein Bar Nutrition Facts

These are one of the finest protein bars available in terms of nutrition. Both tastes include 200 calories, seven grams of fat, two grams of sugar, fourteen grams of fiber, twenty-one grams of protein, and 160 milligrams of sodium. Erythritol and Stevia are used to sweeten the bars.

These are not a suitable alternative for lactose intolerant or nut allergic people because they include milk and almonds. Also, I’ll state the obvious: some folks cannot take protein bars and do not digest them properly. If you consume a protein bar and then wonder why you’re bloated, gassy, and feeling indigestion six hours later, it’s definitely the protein bar.

There’s a lot of fiber in them. You could be setting yourself up for a bathroom disaster if you eat one of these with your big kale salad. Others can consume up to three of them each day with no ill effects. All I’m saying is that you should be cautious!


The fact is that finding protein bars that are a true source of protein is quite tough. The majority of the bars outside are filled with sugary, calorie-dense sweets. This nutritious protein bar combines a large amount of protein and a carbohydrate, providing the body with a lot of energy and nutrients. It also helps you to control your appetite and eat the right amount of food.

Kirkland trademark protein bars have components that make them a very useful protein supplement for health. The reason for this is that these non-GMO bars are manufactured entirely of natural ingredients and are gluten-free. More than 20 grams of milk protein are included in each bar. Whey protein and casein protein are combined to make this milk protein. This protein is useful because it provides an immediate energy boost and is easy to digest.

These protein bars use natural stevia extract as a sweetener instead of sugar, making them completely nutritious. The amount of fiber in this bar helps the protein to stay in the system for a long period. Because of this, these protein bars are keto-friendly. Another component included in the bar is sunflower lecithin, which is good for your heart and skin. Lecithin also helps to lower cholesterol levels.

As there are several kinds of Kirkland protein bars offered at Cosco, the components vary in quantity. As a result, the nutrition of each flavor of these bars varies. The essential thing to note is that all of the components are natural, with no additives or preservatives utilized in the production of these bars. This post on Kirkland bars may assist you in overcoming problems in your search for the finest and healthiest option among many tastes.

Kirkland Signature Protein Bar Review


Kirkland Signature Protein Bar
View prices for this protein bar!


Kirkland Chocolate Chip

Kirkland trademark semi-sweet chocolate chips are the finest protein bar for a variety of reasons, including its high protein content. One of the most compelling reasons is that chocolate chips include more milk fat. This bar is keto-friendly, vegan, and gluten-free certified.

Kirkland Nut Bars

Almonds, cashews, and pecans are used to make this nutritious bar. It has a very low carbohydrate content, with each bar containing 200 calories. This keto bar is a filling, high-protein snack for everyone.

Kirkland Cookies And Cream Protein Bar

This is one of Kirkland Signature’s greatest products and one of the best protein supplements on the market. This bar’s protein source is whey isolate. This bar has a high fiber content and is low in sugar. This Kirkland genuine cookie bits are the healthiest and kosher-certified.

Not Vegan Friendly

The protein in Kirkland Protein Bars comes from whey and milk, both of which are dairy products. This has the advantage of allowing Costco to produce and sell these bars at a lower cost. The drawbacks, on the other hand, are considerably more obvious. Here are a few of the problems:

Because it is more difficult to trace the origins of bovine supplies, they have a higher risk of contamination. To be healthy to ingest, whey protein must go through a thorough processing procedure. Because the taste is unpleasant on its own, a lot of flavoring must be added to improve it, which might raise the price.

Whey protein takes about 85 minutes for the body to absorb, whereas rice protein takes little over 60 minutes. The most serious problem is that whey protein has been related to digestive irritation, which can lead to problems including gastric distress and an upset stomach.

May Cause Allergies

This product is not suitable for people who are lactose intolerant or allergic to nuts. Kirkland Signature Protein bars are loaded with dairy ingredients including whey and milk and cashew nuts.

Despite the fact that they are natural sources, if you are intolerant, you will be unable to consume this product. Brown rice protein is always more effective and compatible with most diets.

High In Carbs

The last item to highlight is that Kirkland Protein Bars include 22 grams of carbs per bar. If you follow a ketogenic diet, this is a lot of net carbs, and it will use up a lot of your net carb allotment if you want to stay in ketosis. As we’ve already discussed, there are many alternative options out there that may provide you with a significant quantity of protein without the overlapping carbohydrates.


Protein bars appear to be popular because they are handy, nutritious, satisfying, and deliver a substantial quantity of protein in the shape of a pleasant treat. If you’ve never had a protein bar, let me inform you that they come in a wide range of flavors, some of which are delicious and others which are disgusting.

Some have a fudge or soft taffy texture and taste like raw cookie dough, while others have a fudge or soft taffy texture and taste like raw cookie dough. Protein bars may be difficult to digest and taste chalky, or they can keep you full and make you feel like you just ate a wonderful dessert. Costco’s Kirkland Signature protein bars are softer than others, with a texture similar to thick taffy or fudge. Chocolate chip cookie dough and chocolate brownie are the two flavors in the package.

Both flavors taste sinfully delicious, but I favor the chocolate chip cookie dough flavor. It tastes a lot like raw cookie dough, and the greatest part is the large chocolate pieces in the bar, which give the soft, taffy-like texture more variation and depth. Despite being a major chocolate fan, I adore the combination of tastes, the vanilla-y cookie dough, and the chocolate pieces.

The Costco Kirkland Signature Chocolate Brownie protein bar is tasty, includes chocolate chunks, and works well as a substitute for a genuine brownie. I won’t claim it’s a perfect substitute because, let’s face it, nothing can completely replace a genuine brownie, but it’s fairly close. If you don’t like very sugary, dessert-like protein bars, you may want to avoid them. If you’re anything like me, you’ll want to eat dessert all day, every day. Take a look at these.


The convenience of Costco Kirkland Signature protein bars is well-known. They make a great snack or meal replacement and are small enough to fit in handbags, glove compartments, diaper bags, brief cases, gym bags, and other small spaces. One of these can even be served as a meal.

The protein bars keep fresh for a long time in the package and have a lengthy expiration date. I rarely eat an entire bar. If you’re like me and don’t finish one full bar, no problem. Simply leave the bar wrapped in its original packaging and store it in a ziplock bag to keep it fresh for a day or two. If you leave it for a week, it will get difficult. Also, I recommend avoiding doing so instead of putting elastic around the bars wrapper (like I did to keep the freshness sealed in). The bar adheres to the wrapper, and you end up wasting a protein bar!

Kirkland Signature Protein Bar Review


Kirkland Signature Protein Bar
View prices for this protein bar!


Side Effects Of Kirkland Signature Protein Bar

Kirkland Protein Bars can make you feel bloated. Most products that include a lot of whey protein have this problem. If you’re allergic to dairy products or have a sensitive stomach in general, the whey and milk in Kirkland Protein Bars may cause the following adverse effects:

Before taking this product, we recommend speaking with your doctor or a medical expert if you have any concerns about these conditions.

Are Kirkland Signature Protein Bars Keto Friendly?

Both yes and no. Kirkland Protein Bars have 22 grams of carbs per bar, which is a lot for such a tiny item. To maintain your body in ketosis and running off your ketones and stored fat, most keto diets advocate eating no more than 50 grams of carbs each day. Although these protein bars from Kirkland at Costco come into this category, they account for over half of your daily allotment. There are lots of additional high-protein choices that can help you stick to a keto diet without juicing up your carbohydrates. It isn’t the ideal option for you, but you could make it work if you want to.

The cookies and cream flavor are superior to the chocolate chip cookie flavor. It’s easy to chew and won’t get stuck between your teeth.

Cookies & cream are difficult to remove from the wrapper (sticky protein bar); it’s difficult to chew and tastes like chocolate chip cookie flavor. On the other hand, it contains the majority of the net carb.

Protein bars from Kirkland and other companies come in various flavors; some taste nice but are difficult to eat, and others taste horrible but are easy to consume.

Are Kirkland Signature Protein Bars Good?

According to our Kirkland Protein Bars review, these aren’t the finest protein choice, but they’re also not the worst. Although there are better protein choices on the market for $39.99, Kirkland does have one advantage: convenience. Kirkland’s Protein Bars are convenient to eat on the move because they come in bar shape and don’t require shaking.

But there’s a catch: it’s not the best sort of protein. Kirkland Protein Bars are not vegan, are not suited for everyone (dairy and nuts are present), and are only keto friendly in a pinch because they consume a large portion of your carb allotment. If you’re searching for a quick way to add protein to your diet, this might be it. If you’re searching for the best protein solution, though, this isn’t it.


If you utilize protein bars in moderation, they might be an excellent alternative for a fast protein-rich snack. The Kirkland protein bar stands out among the various protein bars available at Costco.

We spoke about Kirkland protein bars’ ingredients, nutritional information, and overall flavor and eating experience. Kirkland is a well-known protein brand in the United States. It’s also the most popular protein bar, going by the name Costco Protein Bar.

I chose to create this review in order to supply you with the necessary information and data. Kirkland trademark protein bars are a wonderful alternative if you’re seeking to buy a protein bar for the first time or if you’re a first-time protein bar customer.

Frequently Asked Questions (FAQs)

Are Kirkland Protein Bars Healthy?

Yes, natural ingredients and excellent protein sources are included in the raw ingredients of Costco protein bars and Kirkland bars. It has an excellent balance of protein, carbohydrates, and fats in a single meal. These protein bars provide 180 to 200 calories per serving, so if your daily macros allow, you may use them as a snack in between meals.

Where To Buy Kirkland Protein Bars?

You may purchase them at your local Costco store if you want to buy in person. Kirkland is a popular protein bar at Costco. On the Costco website, over 3600 customers gave it a five-star rating. You may also purchase these protein bars on Amazon, where you can get some great bargains and discounts.

Are Kirkland Protein Bars Good?

Kirkland protein bars are offered in four varieties at Costco.
The chocolate chip cookie and the peanut butter chunk are the two tastes that stand out among the four, and both are high in protein.

Did Costco Stop Selling Kirkland Protein Bars?

It’s still accessible, no. It’s one of the most popular protein bars at Costco. On the Costco website, you can get a pack of two for $40.

When To Eat Protein Bar?

You are free to eat whenever you choose. A protein bar is often something that people who are constantly on the go or who have a hectic schedule and don’t have enough time to prepare prefer as a quick and simple source of protein, carbohydrates, and fats.

Kirkland Signature Protein Bar

$1.49 Per Bar










  • Top-Quality Ingredients
  • Very Few Carbohydrates
  • Good Size
  • Filling


  • Contains Sweetners

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