Don’t laugh, but well over 50% of diet products simply don’t work. So what can this Right Size Smoothies review tell us about diet? We chose to conduct one of our thorough reviews, taking a closer look at the ingredients, side effects, clinical research and customer service. We also pored through hundreds of user experiences. Then, we summarized and refined it all to give you the information you need.
What is Right Size Smoothies?
The Right Size is a company that is marketing a weight loss product in shake form which joins the pantheon of other similar shake diet products such as SlimFast and Nature’s Way.
So what is the Right Size Smoothie? Well according to the product description on the Amazon sales page: “Right Size is a delicious, hunger smashing weight loss smoothie packed with protein, fiber, and over 20 essential vitamins and minerals that keep your body nourished. It conveniently replaces breakfast and lunch and staves off hunger with its unique combination of protein and fiber keeping you full for hours.”
Each container contains approximately 20 servings. The other issue is to find out where to purchase this product. Amazon lists the Right Size Smoothie as “unavailable.” The only commonplace we could find it was on eBay of all places. Prices there range from $89.97 up to $139.99 with free shipping. These prices seem much higher than what it may have been advertised. One review site noted that it was once offered at $55 for a container of 30 servings. It makes one wonder what happened between then and now.
It also seems that at one time, Right Size offered ready-to-drink 8-oz size bottles. However, we could not find this product version available anywhere we looked.
We completed a review of the product and from our analysis, we found there are a variety of flavors of smoothies, including Lean Cocoa Bean, SkinniVanilli, Leano Cappuccino, and Slend-A-Berry.
How Did Right Size Smoothies Start?
According to the Facebook page of Right Size, the company began in 2002 and is currently based in Lake Zurich, IL. A search found that the company is listed as Right Size Health and Nutrition, LLC. The Better Business Bureau (BBB) gives the company an A+ rating but that the business is not BBB accredited. The website listed on the BBB page goes to a domain name that is no longer active and is for sale. However, we did find a simple WordPress site for the product. 
The mission of the company is also listed on their Facebook page, and it highlights how their product addresses a standard issue for many Americans. As stated on their page:
“Hectic lifestyles tend to make healthy choices wait. Right Size Weight Loss Smoothies fixes this problem. Even if you have only a few minutes to eat, you’ll have enough time to shake up one of our smoothies. Simply replace your current breakfast and lunch with our easy-to-make smoothies, and you can expect to lose up to 18 lbs. in 12 weeks.”
Right Size Smoothies Claims
Well, we highlighted one claim which we pulled straight from the company’s Facebook page. But we also checked their website  and found this short statement:
“Not a bodybuilder? Enjoy a protein smoothie anyway! Our bodies need protein for healthy skin, hair, bones, and heart. Plus a protein-packed breakfast can prevent overeating, and a dose of protein after resistance training helps build and repair muscle tissue (especially when you consume a blend of proteins).”
From what little is being currently advertised on the site and other places, the claims from the company do not seem unique or overly extravagant – beyond what we found on their Facebook page and their basic website.
Right Size Smoothies Ingredients
There is quite a list of ingredients with the usual scientific sounding names to make up a smoothie concoction. For full disclosure, they are all listed below (at least for the lean cocoa bean flavor version):
• Soy protein isolate
• Crystalline fructose
• Resistant maltodextrin (Soluble dietary fiber)
• Cocoa (Processed with alkali)
• Canola oil
• Corn syrup solids
• Natural and Artificial flavors
• Silicon dioxide (An anti-caking agent)
• Carboxymethylcellulose gum
• Xanthan gum
• Sodium caseinate (A milk derivative)
• Green tea extract
• Dipotassium phosphate
• Acesulfame potassium
• Soy Lecithin
• Mono- and Diglycerides
• Ginger root extract
• Cinnamon bark extract
At the bottom of the list is a further notation that the product does contain milk and soy.
One thing to note is that the product previously advertised and emphasized an ingredient called “Appemine” which is a combination of ingredients such as Green tea extract and cinnamon. However, it appears to be a made-up word. The company appears to have removed Appemine from Right Size Smoothies, although some of the ingredients in Appemine are still present in the ingredients list.
Does Right Size Smoothies Work?
Well, the verdict from our review does not seem to indicate a ringing endorsement for this product.
Even on the company’s Facebook page, it indicates at the asterisks below the Mission statement that “Results not typical. Weight loss was achieved by replacing two meals a day with Right Size Weight Loss Smoothies while following a reduced-calorie diet.” So can it work? Possibly, but mainly in combination with other actions by the consumer.
However, some positive reviews were found on the Amazon sales page (even if the product is unavailable there). The average reviews indicated a 4.1 out of 5 stars for the product which isn’t bad.
But does Right Size Smoothies work? Well, it seems to depend on how one uses it in conjunction with other activities. One site review appeared to explain it like this:
“It’s safe to assume that many users of Right Size Smoothies will lose some sort of weight, because along with the shakes, the company tells you to eat less and have healthy balanced snacks, as if Right Size Smoothie invented this particular method of dieting.”
The top ingredient on the list of the product ingredients is soy protein isolate. One study has shown that “soy provides a complete source of dietary protein, meaning that, unlike most plant proteins, it contains all the essential amino acids” even though “Americans as a whole still consume very little soy protein.”
The second primary listed ingredient is Crystalline fructose. This seems to be a favorite substitute for sugar and provides the sweet flavor for the product. How about any adverse effects? In one study using Crystalline fructose and patients with Type 2 diabetes, the results seem to show “no significant long-term deleterious changes were observed” and that the substance “was well tolerated without significant effects on body weight, or lactic acid and uric acid levels.”
The third primary ingredient that is listed and we will discuss briefly is the Resistant maltodextrin. This is essentially a form of dietary fiber. In one study conducted, it was shown that Resistant maltodextrin did help in colonic function.
One area that seems uniform in the review of the product is the positive feedback on its taste. That could be one of the not so minor factors that allow consumers to imbibe this smoothie instead of eating a regular meal. In one site, it was noted that “they’ve done a good job at trying to create a great tasting smoothie that you could see yourself drinking for an extended period of time”; besides it is “gluten-free” and “melanin free.”
Right Size Smoothies Benefits and Results
We’ve discussed some of the advertised benefits and supposed results. In the past, the company may have run into some difficulty in regards to some of the benefits it advertised.
We did find several YouTube testimonials about the effectiveness of Right Size Smoothie and one from 2013 highlighting the supposed benefits of it in a health infomercial. 
In 2011, the company was approached by the Electronic Retailing Self-Regulating (ERSP) program challenging some of the claims made on their website and Facebook page at the time. After some discussions and requests for supporting documentation, the ERSP decided that Right Size “can support certain performance claims” but that they had also “voluntarily discontinued certain claims made at Facebook and in consumer testimonials.”
Details on Right Size Smoothie and Weight Loss
Well, it seems that the feedback is mixed on results of Right Size Smoothie as a weight loss supplement. However, the details on how it works are reasonably clear. The product is not designed to work alone and requires a commitment to proper diet and exercise to be potentially useful.
In one YouTube testimonial, a woman describes her experiences  with Right Size Smoothie. For her, it was a clear success, but she emphasizes the need to change one’s diet and to add moderate exercise to one’s regime for the product to enable one to lose weight – otherwise, it won’t work for you.
How to Use (Take) Right Size Smoothie
Right Size Smoothie is designed to replace two daily meals. The directions say that one should add one serving of the powder to a glass of milk or water, shake, and drink up. It also recommends you follow it with another 8 oz glass of water. The container also indicates that one should also “enjoy two 100-calorie snacks” and to “eat one sensible meal.”
Of course, it requires that one also change one’s diet and exercise regularly. Otherwise the results may not be as advertised.
Potential Right Size Smoothie Side Effects
Well, there could be risks if one does not follow the directions correctly for use. Replacing two meals with a weight loss drink and over-exercising or under exercising could have some negative consequences.
There are some concerns about some of the individual ingredients used in the smoothie. One site went into some detail about these particular elements, and it is highlighted below:
• The first major ingredient item is soy. “RightSize diet shake uses soy as protein. While the unimpressive 7 grams offered in a serving isn’t much, consuming soy for protein is still not advisable. Due to demand, soybeans have become one of the most highly genetically modified crops also highly contaminated by pesticides. From a health standpoint, soybeans have enzyme inhibitors that block your body’s ability to digest protein properly.
- Maltodextrin is listed as the third ingredient in Right Size. This substance is a food additive made from grain starches, most commonly corn. It’s used to stabilize, sweeten, and thicken packaged foods. While it is highly processed, maltodextrin is still a naturally derived additive. In small amounts, maltodextrin isn’t necessarily harmful. What’s bothersome about its use in Right Size is the fact that it’s listed as the third ingredient, meaning it’s found in a relatively high quantity in the food.
- Crystalline Fructose is used to sweeten Right Size. This sweetener is derived from corn and has such concentrated sweetness it can add flavor with fewer calories, thus making it attractive to companies producing products marketed to the health-conscious. However, the repercussions of consuming this sweetener aren’t worth the calories it saves you. Fatty liver disease, hyperlipidemia, coronary disease, and obesity are just a few of the unpleasant side-effects crystalline fructose can cause.
- Canola Oil is made from a genetically modified version of the Rapeseed plant. Often touted as a “healthy oil,” it does have low amounts of saturated fats and high amounts of unsaturated fats (the good kind of fats), including Omega 3 fatty acids. But, industrial production of canola oil utilizes processing methods that include dangerous chemical washes and exposure to heat that oxidizes the oil. One study also found up to 4.2% transfat in canola oil.
- The artificial flavors listed on the label are mysterious chemical mixtures that imitate a natural food flavor. These synthetic ingredients aren’t natural at all and are often chosen by manufacturers to save time and money in the creation of their product.
- Silicon Dioxide is a compound used in food to prevent caking. A variety of products incorporate it, from drugs to supplements to printer toners to cosmetics to insecticides. Although the U.S. Environmental Protection Agency categorized Silicon Dioxide in Toxicity Category III, the FDA considers it to be safe based on the fact that most people will consume a small enough amount they will never experience a negative impact on their health. However, the fact remains that silicon dioxide in significant quantities is harmful.
- Acesulfame Potassium (also known as acesulfame K) is an artificial sweetener. 200 times sweeter than table sugar, acesulfame potassium is not metabolized or stored in the body. Ones you consume it, your body absorbs but then excretes it unchanged.”
While the description for some of these ingredients is essential to note, it does appear that if one does not overindulge consuming large quantities of this product, it may not be of great concern. But as always, if you feel some concern, one should consult with your physician before consuming this product.
Right Size Smoothie Product Warnings
As far as we can see, there are no specific product warnings associated with Right Size Smoothie. On the container though, it does have in fine print at the bottom to “consult your doctor before starting any weight loss program.” Smart advice to use for any weight loss product.
Any Right Size Smoothie Lawsuits?
There do not appear to be any lawsuits involving Right Size Smoothies. However, there have been complaints made concerning the customer service of the company mainly surrounding being charged automatically after the free-trial period.
In one site review, it noted “out of the 19 complaints posted… seven people in total have been charged $119.80 for ordering or trying to cancel Right Size Smoothies. It seems just like most trial experiences, giving this product a free shot seems to be more trouble than it’s worth.”
Even though it appears that the free trial period is no longer being offered by the company, it is something to note about the entity that is providing the product. Hopefully, the customer service issues have changed for the better. It does appear that the company itself has gone through some transition but whether this is a positive or negative outcome, only time will tell.
Right Size Smoothie Alternatives
After reading this review and you are beginning to feel very skeptical of Right Size’s Smoothie as a product choice, you may not be alone. Just the fact that the company appears to have changed websites and that the only site we have found to be able to buy the product is on eBay, with an average price that is much higher than what it used to be advertised at, does not give a consumer a “warm fuzzy” feeling.
If you are looking for an alternative to Right Size Smoothie, there are certainly several alternative smoothie type drinks if that is your preference. There are other long-running meal replacement products, such as SlimFast. But one idea could be to create your smoothies from all natural ingredients that one can at least verify the source. Prevention.com gives a list of ten smoothie recipes  to choose from.
WebMD has a visual but straightforward list of drinks that they believe can help or harm in losing weight. You can view the slideshow here.
However, in general, the efficacy of most diet supplements in questionable. In 2012, a researcher at Oregon State conducted a review of available studies on a myriad of diet supplement products. She found that “no research evidence exists that any single product results in significant weight loss – and many have detrimental health benefits” and that “for most people, unless you alter your diet and get daily exercise, no supplement is going to have a big impact.”
Finally, one must consider that if one chooses to take this product and uses it correctly and responsibly, and one achieves their weight loss goals, it is important to remember that this product is not a complete meal replacement for long-term use. It should never be considered part of a sustainment plan for keeping off the weight once you achieve your goals. There can be no real substitute for maintaining a proper diet of authentic food to keep one fit and in shape.
What Users Are Saying
“”I’m writing this as someone who has loved and drank RightSize for the past three years, so if they’ve made any particular recipe changes as other reviewers have claimed, I certainly haven’t noticed it in the past three years. I love using this as an after-workout recovery shake to get a delicious chocolate taste with added protein. I highly recommend using it with a Blender Bottle.””
“”I bought this last week tired almond milk with it it taste good together and I don’t feel hungry””
Also: read our Burn HD Weight-Loss Kit review »
“”Did not like the taste of the product. Still felt hungry.””
The Bottom Line – Do Right Size Smoothies Work?
So, are Right Size Smoothies Weight Loss Shakes the best around? We were initially excited to review this one because it appeared like the shake may be a promising way to reach your weight-loss goals, but we’re not sold on suggesting this one to dieters because the clinical proof is just not there. Plus, we are concerned about customer complaints that claim it doesn’t work.
If you’d like to shed some pounds, we suggest using a weight-loss supplement that gives you not only safe and effective ingredients at an affordable price, but something that reviews indicate provides positive results.
Among the best products we have seen this year is one called Dietspotlight Burn. It is made with a proprietary blend of four clinically proven ingredients, all of which are known to help support metabolism and boost fat loss. Throughout our research, we were unable to find talk of negative side effects, but we easily found conversations from dieters seeing great results.
We’re happy to see the makers of Dietspotlight Burn are so confident in their product they’re giving new customers a Special Trial Offer, which is always good.Learn More About Burn HD »