PCOS friendly protein bars – Quest Bars

by | Sep 8, 2016

Choosing a protein bar that is PCOS friendly can be tricky! With such a variety of choices it is no surprise you are overwhelmed. Question – do you even know what you should be looking for when shopping for protein bars? Should you look for bars that are low in fat? Low carb? Low sugar? High fiber? It seems like the list of variables are endless! But don’t worry the PCOS Dietitian has your back 🙂

To help you make the best decision for your PCOS, I have decided to write a an educational series of blogs on several of the popular protein bars on the market. It is my goal to discuss the different bars and explain whether I would give them the PCOS stamp of approval. Please be mindful there are SO many reasons why someone might choose a particular protein bar. However, I am going to do my best to break down the protein bars down into four specific criteria: nutritional profile, ingredients, cost and taste. Each week I will review a different bar and base my review on the same criteria. That way you can make your own comparisons and select the best protein bar based on the information presented. So now let’s go assess our first bar: Quest Bars.

Quest Protein Bars

Are they PCOS Friendly ???

I decided to start by reviewing one of the most popular protein bars on the market: Quest Bars. For about the last three years, Quest Bars have claimed their fair share of the protein bar market. Touted nutritionally for their high protein, moderate carbohydrate, high fiber make-up Quest Bars are without a doubt a popular choice among protein bars. But how do they stack up for our specialized population of PCOS cysters? Let’s see …

This is an image of a Quest Bars. Quest Bars are an example of one of the many PCOS friendly protein bars

Quest Bars are an example of one of the many PCOS friendly protein bars

Nutrition Profile

From a nutritional stand point Quest Bars present the PCOSer with a solid profile. Quest Bars are all about 190 – 200 calories per bar. Therefore, depending upon where someones calorie level is set, I would either recommend a Quest Bar as a meal replacement (in a pinch) or one of their snacks. For women with PCOS who only command a small number of calories, I might suggest splitting the bar into two pieces and consuming as two separate snacks.


One of the things I like best about Quest Bars is they are a true protein bar. What I mean by this is they actually have a significant amount of protein in each bar. I know this sounds like a no-brainer when we are talking about protein bars – but you would be surprised how many bars you think are protein bars actually have very little protein in them.  In order for me to call a bar a protein bar, it must have at least 15 grams of protein in the entire bar. Anything less than 15 grams is more likely considered a snack bar and not what I would consider a protein bar.

This is an image that states The PCOS dietitian's rule for determining whether or not a bar is really a protein bar or not

The PCOS dietitian’s rule for determining whether or not a bar is really a protein bar

Of note – we will be examining bars in this weekly series (such as Kind Bars) that do not meet my true protein bar criteria. This does not mean a bar is not a good bar if it does not have 15 grams of protein – it just means we cannot really call it a protein bar. So hang tight and we will get to that in the future! I wanted to start with a true protein bar and that is why I chose Quest Bars.

Quest Bars have a whopping 21 grams of whey protein!  For some women that could account for about 1/4 of the protein they need for the day. Protein breaks down slowly and promotes a feeling of fullness. This is why I often recommend Quest Bars for busy women with PCOS who are on the run. Quest Bars make a great high protein breakfast choice! They are a nice alternative to eggs and/or smoothies. Plus they need a lot less time and effort as well. No blender or cooking skills required!

However, be mindful if you are sensitive to dairy or are lactose intolerant you may have a hard time digesting Quest Bars. Due to the fact their main source of protein is whey (which is a derivative of milk!) you may need to consume them with caution if you are sensitive to dairy. Many patients who are lactose intolerant experience cramping, diarrhea and gas when they consume Quest Bars. So just be careful!

Toal Carbohydrates & Fiber Content 

You know in the world of PCOS we could never talk about protein bars without talking about their specific carbohydrate content. Not only are Quest Bars high in protein, they are also moderate in carbohydrates. I often consider a food moderate in carbohydrates if has between 15 – 30 grams of carbohydrates per serving. Per bar, Quest has only 21 grams of carbohydrates per serving. On most of my nutrition plans for women with PCOS, I allow for around 100 grams of carbohydrates per day. Therefore, Quest Bars can fit nicely as quick meal or snack option in my eating programs.


As you can see in the image of nutrition facts below, Quest Bars contain a high amount fiber. They have 14 grams of fiber per bar which is about 60 % of your daily needs. Fiber is a type of carbohydrate the body cannot breakdown. Therefore, it goes out the same way it comes in! TMI!

Almost all the carbohydrates in Quest Bars come from fiber. Fiber helps you stay full and keeps your insulin levels low. Fiber can also prevent certain diseases, control hunger, and improve digestive health. IMO is the specific type of fiber Quest Bars contain. IMO comes from plant sources. It is similar to chicory root fiber, having the same texture, feel, and taste. It is also helpful for weight loss.

Be Careful if you have any GI Issues

However, with that being said (especially folks with stomach and intestinal issues – such as Crohn’s Disease, Colitis & Irritable Bowel Syndrome) some people have a hard time digesting the large amount of fiber in Quest Bars. So in addition to feeling full, they may also experience significant bloating and gas. If you are one of these people, I would HIGHLY suggest starting off consuming only small portions of the Quest Bar – maybe only a quarter of a bar at a time. While the fiber will do no long term damage, I would hate you to be gassy and bloated – as there is nothing fun about that!

This is an image which displays the nutrition facts for a quest protein bar. Highlighted on this particular image is the fact that the bar contains a moderate amount of protein and high amount of fiber. Also highlighted in this image of the nutrition label is the fact that bar contains sugar alcohols.

Quest Protein Bar Nutrition Facts


Artificial Sweeteners

Most Quest Bars contain sucralose, an artificial sweetener, erythritol, a sugar alcohol, and stevia, a sweetener and sugar substitute extracted from the leaves of the plant species Stevia rebaudiana  Stevia and sucralose appear in the last of the bars’ ingredients. Sucralose is just a different name for the more commonly known sweetener Splenda. This shows it they appears in small quantities.  Splenda appears after other low-sugar sweeteners such as stevia and erythritol.

This image shows an ingredient label for a Quest Protein Bar. The Highlighted Ingredients are the Different forms of sweeteners the bar contains. Of note are erythritol, splenda and stevia

Quest Protein Bars: The Highlighted Ingredients are the Different forms of sweeteners this particular bar contains

However, there are actually 7 Quest bars that don’t contain artificial sweeteners. Are they the most natural food in the world? Not at all, but you have to pick your battles sometimes. If you do choose to eat a Quest bar, you might want to choose carefully based on the type of sweeteners they contain.

Quest Bars without artificial sweeteners:

Cinnamon Roll

Strawberry Cheesecake

Double Chocolate Chunk

Lemon Cream Pie

Chocolate Peanut Butter

Many people ask me my stance on artificial sweeteners. In all honesty, I really have no stance. I truly feel like whether you choose to consume artificial sweeteners is a personal preference. For me personally, the research on the dangers of them is just not convincing enough.

On the flip side, that does not mean I am advocating you consume a boat-load of any type of sweetener! However, like everything I firmly believe if consuming a Quest Protein Bar is the worst of your dietary ills then you my cysta’ are in good shape. In future blogs I will dive into some of the research surrounding artificial sweeteners – but for you now all I can say is eat REAL food when you can.

Gluten Free

Quest Bars are gluten-free. However, with that being said, be careful (as I just noted!) if you do have any GI issues due to the high fiber content of these bars.


Quest Protein Bars do contain dairy. But as we will discuss they have a form of dairy that is almost virtually lactose free. Boom!

If you view the label you will see the first ingredient states “Protein Blend: Milk Protein Isolate, Whey Protein Isolate.” The milk protein isolate is a no brainer – obviously it is made from milk and a dairy derivative. What may not be so obvious is the ingredient: ‘whey protein isolate.’

Whey is one of the two major components of milk. It is the liquid part of the milk that separates from the curds (the other major part), during the process of making cheese. However, what we want to zone in on is the type of whey contained in Quest Bars. Quest Bars contain whey isolate. Whey isolates contain a higher percentage of pure protein and can be pure enough to be almost lactose free, carbohydrate free, fat-free, and cholesterol free. So even if you are lactose intolerant, Quest Bars may still be an okay option for you as they tend to contain low amounts of this lactose.


Quest Bars are pretty comparable to all protein bars on the market. They are available from every where from Trader Joes, to Whole Foods, to Vitamin Shoppe, Amazon (obviously!) and even gas stations such as Mobile and 7-Eleven. They tend to be the least expensive when bought in bulk on Amazon where you can buy a box of 12 for $23.79 which comes down to about $2.00 per bar. I have seen them in 7-Eleven for anywhere between $2.25 to $3.00 per bar. The Trader Joes near me in Orange, CT sells them for around $2.39. If you find a flavor you love — Amazon is always your best option.


I have tried almost all flavors of the Quest Bars. You can order a variety pack on Amazon if you are interested in sampling different types from fruity ones (think Apple Pie & Lemon) to chocolatey ones (Mint Chocolate Chip, Chocolate Chip). The flavor choices are seemingly endless.


However, my personal favs are: Chocolate Chip Cookie Dough and Cookies and Cream. I would have to say I like the Cookies and Cream the best as it reminds slightly of eating Oreo Cookies 🙂 I recently tried the Oatmeal Raisin Chocolate Chip thinking that it would taste like an oatmeal raisin cookie – but I was sadly disappointed. Many people who I work with also love the S’mores flavor but I have to say it just does not do it for me.


The flavors I like least are the fruity ones such as Apple Pie, Lemon and Mixed Berry. They tend to taste very artificial to me – more so than the chocolate based-bars. I don’t think I could ever finish a whole ‘fruit – based’ bar. It would probably make me sick to my stomach.


The texture of these bars is dense and chewy. They remind me a bit of the original Power Bars that first came out in the late ’90s. I cannot say I would ever describe them as ‘light’ such as I might a Power Crunch bar. There is very little ‘crunch’ appeal to them at all. I think this is due to the high fiber content. It is tough to make something appear light when you have put 50 % of someone’s daily fiber requirement into one little dinky little protein bar.

After Taste?

Most of the Quest Bars have a somewhat distinct after-taste. Even the ones sweetened with Stevia. It is not horrific by any means. But I would be lying to you if I said they tasted amazing. However,  with that being said – they taste better than most of the other bars on the market. But that may not be saying much!

The PCOS Dietitian’s Verdict – Quest Protein Bars

Hmmm … this is a tough one. I think Quest Bars are like many foods; they look good on paper, but can they stand up tall among all the categories ?

In terms of a nutritional profile, I would give Quest Bars an A/A-. They are solid. They are low enough in carbohydrates (~ 20 grams), high enough protein (20 grams, too!) and wicked high in fiber (13 grams) to fit into the class of being PCOS friendly for sure.

The ingredients I would consider somewhat iffy. While there are not a ton of ingredients and fillers like most bars – they still have artificial sweeteners (typically in the form of Splenda) and Palm Oil which is a highly refined saturated fat. For ingredients I would give Quest Bars a C+/B-. I wish they would get rid of the Splenda or at least show more directly that surcralose is really Splenda in disguise.

Cost they get a solid B. They are comparable with all the other protein bars on the market. You have to keep in my mind they have 20 grams of protein in most bars which is the equal to 3 ounce of chicken. So if you look at them that way – they are a good value when it comes to getting your protein in. Especially if you don’t love animal protein.

Taste the get a B They are not the most horrific tasting bar on the market – but they are certainly not something I would choose to eat all day. I think given the fact they have so much fiber and contain artificial sweeteners it would be virtually impossible for them to taste amazing given their nutritional make-up.

So all in all – I would probably rate Quest Bars overall a solid B. Relative to other bars – they will likely score higher – but still not A material.

As with any bars no matter what the brand – I would always encourage real food over supplements when possible. However, I am a realist and understand we all live in a busy, fast-paced world where sometimes food prep is non-existent. Quest Bars can certainly ‘pinch hit’ for a breakfast, lunch or snack. But do your best to round out the rest of your diet with clean sources of protein such as eggs, chicken, greek yogurt, cottage cheese, lean red meat and turkey.

What’s your take on Quest Bars? Love ’em? Hate em’? Have a favorite flavor you are dying to share with our community? Tell us in the comments below.

And as always thanks for stopping by!

Support for women with PCOS

Amy Plano PCOS Dietitian