Updated: 01/08/2018

Luna Bar Review - 6 Things You Need to Know


I need to make a confession. I was obsessed with researching the Luna Bar. We decided to focus on the ingredients, side effects, scientific studies and quality of customer service. Additionally, we poured over consumer reviews and comments. Then, we summarized and refined to give you the info you need.

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What is Luna Bar?

First off, Luna Bar is a nutritional food originally created for women. The ingredients include protein grain blend, soy protein isolate, organic rolled oats, organic rice flour, organic alkalized cocoa, organic tapioca syrup, coffee extract, vitamins and minerals. The product supposedly boosts energy levels and helps with recovery. The small package make them portable.

Luna Bars are made by Clif Bar & Company and have been on the market since 1999. Local grocery stores and online retailers sell the product. We like that we found some positive customer comments and that they contain a few natural ingredients, but read on…

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Taste– “Not Good”

The first issue is the taste of Luna Bar ingredients. “No matter how healthy a snack bar or meal replacement is, consumers aren’t going to make a purchase if they don’t like the flavor,” said our Research Editor. “While this is an individual preference, it is an important consideration of a food product.”

One customer grumbled, “It was so dry I couldn’t even finish the first one. So disappointing.”

Another noted, “The after taste killed me, I couldn’t imagine trying another one.”

But some people really enjoyed them.

A pleased purchaser disclosed, “I am completely addicted to the white chocolate macadamia Luna Bar. I have it every morning with coffee for breakfast.”

A woman acknowledged, “I frequently have the S’mores bar late at night instead of ice cream. I think it has really helped me.”

Variety– “Limited.”

Another important consideration isn’t Luna Bar side effects, but the lack of variety. One customer said, “There are so many chocolate options that I’m sure the chocolate obsessed are happy. The thing is, I hate chocolate so I mostly have to pass.”

Another commented, “I really love chocolate but theirs tastes weird. That knocks out over half of my options.”

It is important to note that there were consumers who found the variety to be exactly right.

On a more positive note, this man claimed, “I really like that I can switch up what I eat and still know that I’m choosing something that’s good for me.”

While a satisfied client reported, “I love love love the lemon and the coconut. Plus there are lots of chocolate ones to choose from.”

According to our research, taste and variety are two of the most important considerations in keeping dieters interested in new food products. These are the kinds of details that really solidify consumer loyalty and will keep them coming back for more. Of course, the nutritional data is also important but when one is competing with candy bars and donuts, it really needs to taste yummy.

The Science – “Not Bad.”

At DietSpotlight we are always looking for science to back up claims. In this case, the nutritional ratios seem to be on point and the ingredients are well thought out. Unfortunately, there’s no research showing Luna Bar will help with weight-loss, satiety or recovery.

What Users Are Saying

"So addicted to these things! I love that the nutrients are geared towards women, but I catch my husband sneaking them once in a while! They’re so delicious you can trick yourself into thinking you’re having dessert when you’re actually having a healthy snack."

"They are simply sweet protein bars that can sure cure a sweet tooth and fill a hungry tummy up when it needs substance. If you love sweet bars this one might just be for you."

"This was VERY sweet, too sweet for me to eat. I ended up giving them to the kids to eat and they weren’t terribly thrilled with them either."

The Bottom Line – Do Luna Bars Work?

What’s the real deal with Luna Bars? These bars have solid ingredients so if you like the way they taste then they can make a good meal replacement. However, they are marketed as snack bars which could lead to weight gain rather than loss if people eat too many of them imply because they appear to be healthy. This is why we are reluctant to give them the stamp of approval for weight-loss.

If the time has come to jump start your metabolism, you may want to check out a supplement that has ingredients which are backed by scientific research. It is important to have the resources to control your appetite and boost your metabolism in addition to healthier food choices.

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Luna Bar

What is in a LUNA Bar?

LUNA Bars are nutrition bars that aim to provide individuals with the nourishment and energy they need throughout the day combined in a convenient snack. The LUNA brand was created by Clif Bar in 1999 and originally targeted their products and brand towards women. While LUNA is still a large advocate for women’s equality and hosts the annual LUNAFEST women’s film festival, the brand has expanded and now offers products for everyone, including their popular variety of protein bars.

What are the ingredients in LUNA Bars?

LUNA Bars contain an organic protein grain mixture that is made up of milled flaxseed, rolled oats, rice flour, roasted soybeans, soy flour, and soy protein isolate. Other organic ingredients include brown rice syrup, dried cane syrup, palm kernel, and high oleic sunflower oil. The remaining ingredients are chicory fiber syrup, vegetable glycerin, and palm kernel oil. Please note that the content of this product may vary depending on the flavor of bar so check the LUNA website and product label for more information.

How do I know if Luna Bar is right for me?

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What are the ingredients in Luna Bar?

There are many flavors of Luna Bar and ingredients vary according to the flavor but all bars are made of protein grain blend and organic ingredients including rolled oats, rice flour and roasted soybeans. All Luna Bars are gluten free and high in calcium, fiber, vitamins and antioxidants.

What are the side effects of Luna Bar?

Gassiness has been found to occur occasionally.

Does Luna Bar work?

Luna Bars are shown to work great at keeping you full between meals by helping to keep snacking at a minimum, or as a meal replacement once a day. Weight loss and maintenance have both been evident when combined with other healthy choices.

What is the price of Luna Bar?

A single Luna Bar can be bought from $1 – $2 while a box of six is usually about $6.

Where can I buy Luna Bar?

Luna Bars can be found in grocery stores, sports and health stores, convenient stores and online.

How should I take Luna Bar?

While Luna Bars are meant for in-between meals to help you stay fuller, the protein bars can also be used as a quick meal replacement bar.

How do I contact Luna Bar customer service?

The phone number for Luna Bar is 1-800-LUNABAR (1-800-586-2227) and an email contact form can be found on their website at http://www.clifbar.com/contact.

Can I return Luna Bar?

If ordered from the website items have a 100% satisfaction guarantee. For bars purchased elsewhere, contact Luna at http://www.econsumeraffairs.com/clif/contactus.htm?site=clif&topic=concern.

What are the most common complaints about Luna Bar?

Some flavors are said to taste a bit “dry”. There are a few concerns about high sugar content for some flavors.


Previous Luna Bar Review (Updated August 23, 2010):

What You Should Know

Luna Bar is a woman's meal replacement or snack. The marketing is clearly feminine in natural with the website focusing news, information, and sales to women who are powerful, inspirational, and in control. Luna bars are all-natural and contain a long list of vitamins and nutrients for improved overall health. While none of the Luna products claim to increase weight loss, the idea is to eat healthier to be more active, which will then lead to natural weight loss - in theory.

List of Ingredients

LunaPro (Soy Rice Crisp [Soy Protein Isolate, Organic Rice Flour], Organic Toasted Oats [Organic Oats, Organic Evaporated Cane Juice], Organic Soy Flour, Organic Flaxmeal), Organic Brown Rice Syrup, Blueberry Fruit Topping (Organic Evaporated Cane Juice, Inulin, Organic Brown Rice Syrup, Organic Apple Powder, Glycerin, Organic Blueberry Juice Concentrate, Organic Corn Starch, Water, Organic Palm Kernel Oil, Organic Tapioca Maltodextrin, Citric Acid, Organic Blueberry Flavor, Pectin, Organic Soy Lecithin, RedCabbage Extract For Color), Coating (Organic Evaporated Cane Juice, Palm Kernel Oil, Organic Palm Kernel Oil, Organic Soy Flour, Organic Soy Lecithin, Organic Vanilla), Inulin (Chicory Extract), Organic Almonds, Organic Soy Butter, Organic Oat Syrup Solids, Dried Blueberries (Blueberries, Apple Juice Concentrate), Vegetable Glycerin, Organic Sunflower Oil, Natural Flavors, Sea Salt, Citric Acid.

Vitamins & Minerals

Dicalcium Phosphate, Calcium Carbonate, Magnesium Oxide, Ferrous Fumarate (Iron), Niacinamide (Vit. B3), Ascorbic Acid (Vit. C), Tocopheryl Acetate (Vit. E), Zinc Oxide, Molybdenum Glycinate, Pyridoxine (Vit. B6), Calcium Pantothenate, Beta Carotene (Vit. A), Manganese Sulfate, Selenium AAC, Riboflavin (Vit. B2), Chromium AAC, Ergocalciferol (Vit. D2), Thiamin (Vit. B1), Cyanocobalamin (Vit. B12), Folic Acid, Cupric Oxide, Phytonadione (Vit. K), Biotin, Potassium Iodide.

Product Features

Every Luna bar will have different ingredients based on the flavor, but this list offers a good insight into Luna's idea of healthy. There are many organic ingredients, but it's not the organic we are more interested in, it's the many. Above each ingredient list on the Luna bar official website is a link to a glossary where users can look-up an ingredient for more information. If that is necessary to understand what dieters are eating, the Luna bar may not be the perfect choice.

The trouble with Luna bar and plenty of other "all-natural" meal replacement bars and snack is bioavailability. Food contains vitamins and nutrients in the perfect combination for absorption by the body. Replacements like the Luna Bar are never going to be absorbed into the body as easily as food.

Each Luna bar contains about 180 calories. The Blueberry Bliss, ingredients listed above, also contains 3 grams of fiber. Fiber is crucial to healthy eating and weight loss with a daily recommendation of 35 grams or more. If a dieter is replacing a meal with a Luna bar, they still have 32 grams to pack in there with just two meals.

Luna bars retail for less than $2 each. Boxes of five to six bars can also be purchased at retail stores.


  • Complete ingredient lists available for all flavors.
  • Organic and natural ingredients.
  • Inexpensive meal replacement.


  • Too many ingredients with long, complicated names.
  • Dieters need a glossary of terms to understand what they are reading.
  • Could be expensive if used for a snack.
  • High sugar content may prevent diabetics from eating Luna bar.


Among all-natural snacks, the Luna bar offers some good benefits. Packed with tons of vitamins and nutrients, the label reads more like the back of a vitamin bottle than a snack or meal replacement bar. Many of these vitamins will not absorb as well as they would if eaten naturally in food. While the bar is a good example of a healthy snack, we continue to support eating healthy meals and snacks that are high in fiber.

Summer Banks Dietspotlight Author
About the Author:

Summer Banks, Director of Content at Dietspotlight, has researched over 5000 weight-loss programs, pills, shakes and diet plans. Previously, she managed 15 supplement brands, worked with doctors specializing in weight loss and completed coursework in nutrition at Stanford University. full bio.

5 Luna Bar Reviews

  •  I enjoy new Luna bars
    Julie Brtek (Verified User)

    I enjoy new Luna bars with raspberry bars. Eat all the week. We’re buy more. Does make loss weight. Sure tired me out walking miles . If eat straight. Is best with food or drink. Water.

    • Stephen (Editor)

      Hi Julie. Luna Bars may boost overall health.

  •  Love the luna bars
    maria villanueva (Verified User)

    i love your luna bars…. but i especially loved your tea bars… which are now discontinued…. any chance on bringing them back on the market… why were they taken off the market… thanx….

  •  Luna Bars and they were so close and much cheaper
    Jackie (Verified User)

    When I started my diet plan I went to Diet Center and their meal replacements were too expensvie so I checked the ingredients with the Luna Bars and they were so close and much cheaper. They have been my mainstay and support helping me loose over 30 lbs. The are so handy to grab when I don’t have time to eat and have to eat on the run. I buy them a dozen at a time, my husband likes them too.

    • Montana (Editor)

      Hi Jackie! If you like Luna Bars, you may also like the effects of Dietspotlight Burn. Their ingredients are clinically shown to help you boost energy, burn fat, and lose weight.