Right Size Smoothies Review: Does it work?

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Expert rating: 3.2/5

Customer rating: stars-icon voted

Intro: What is it?

Right Size Smoothies is a meal replacement that claims it can help you “smash hunger”. It’s made to help you replace your breakfast and lunch through 2 different flavors: Skinny Vanilli, and Lean Cocoa Bean.

It’s recommended to also eat a sensible dinner, and to have 2, 100 calorie snacks each day. It claims to help people stay full for hours, and that it’s beneficial for weight loss. Is this true? What can it really do? Discover the truth about Right Size Smoothies in this thorough review.

Right Size Smoothies Ingredients

Listed are ingredients to the Skinni Vanilli:

Soy Protein Isolate Resistant Maltodextrin Crystalline Fructose Canola Oil Corn Syrup Solids
Maltodextrin Natural Flavors Artificial Flavors Silicon Dioxide Carboxymethyl cellulose Gum
Xanthan Gum Salt Sodium Caseinate Green Tea Extract Dipotassium Phosphate
Acesulfame Potassium Soy Lecithin Mono and Diglycerides Ginger Root Extract Sucralose
Cinnamon Bark Extract Dicalcium Phosphate Dimagnesium Phosphate Absorbic Acid Vitamin E Acetate
Niacinamide Zinc Citrate D-Calcium Pantothenate Vitamin A Palminate Pyridoxine Hydrochloride
Manganese Sulfate Riboflavin Thiamin Mononitrate Copper Gluconate Folic Acid
Biotin Chromium Picolinate Potassium Iodide Phytonadione Sodium Molybdate
Sodium Selenite Cholecalciferol Cyanocobalamin


Some interesting things about the ingredients:

Carboxymethyl cellulose Gum: Thickener that has been studied in mice, according to studies by Nature, a journal of science; it can lead to an increase in inflammation and obesity.

Green Tea Extract: Common tea that has caffeine. According to the official website, Skinni Vanilli Right Size Smoothies has 3.3 mg of caffeine. This means you shouldn’t take it too close to bedtime as it can lead to insomnia.

Copper Gluconate:  A copper supplement often given to people who are deficient. It can lead to breathing problems, chest pain, hives, rash, and other side effects.

Potassium Iodide: Potassium supplement that when taken at high does can lead to many harmful symptoms and disorders. It can worsen thyroid issues and it can cause permanent damage to the thyroid, which is needed to regulate weight.

Sodium Molybdate: Often used as a fertilizer, this mineral extract explodes when it makes contact with certain metals.

Cholecalciferol: Known as vitamin D3, it’s used as a rodenticide and it can lead to soft tissue damage, renal failure, hypertension, and stomach problems.

Sodium Selenite: High doses of this are potentially toxic in humans.

Macronutrients and Calories

Calories 100 Calories from Fat 25 Total Fat 3g, 5% Sodium 140mg, 6% Potassium 100mg, 3%
Total Carbohydrate 15g, 5% Dietary Fiber 6g, 24% Sugars 6g Protein 7g, 14% Vitamin A 50%
Vitamin C 50% Calcium 20% Iron 6% Vitamin D 30% Vitamin E 50%
Vitamin K 30% Thiamin 30% Riboflavin 30% Niacin 30% Vitamin B6 30%
Folate 35% Vitamin B12 30% Biotin 30% Pantothenic Acid 30% Phosphorus 30%
Iodine 30% Magnesium 25% Zinc 30% Selenium 30% Copper 20%
Molybdenum 30%


To find out how much fat is inside, you take the calories from fat and divided it by the calories, then multiply by 100.

25/100=0.25 times 100= 25% fat per serving.

The FDA lists any food with 20% or more calories from fat a high fat food.


There’s 6 grams of sugar from mixed sources. On an ingredient label the first things you see represent how much more of each ingredient is inside. Most of the sugar comes from Crystalline Fructose since it’s the first sweetener mentioned.

Crystalline Fructose: Cheap to make and much sweeter than other sweeteners, this form of sugar extracted from corn. A study shows it increase ghrelin levels after meals, which is the hormone that stimulates hunger. There are also reports that eating lots of fructose is bad since it can increase the risk for cardiovascular damage, insulin resistance and type 2 diabetes.

Corn Syrup Solids: 100% glucose sweetener that is extracted from corn.  It’s made into solids by giving only around 10% water or less. It’s often GMO unless otherwise stated.

Acesulfame Potassium: Calorie free sweetener that’s been criticized after studies showed it damages the nervous system.

Sucralose: Incredibly sweet sugar substitute that in some studies has shown the possibility for being carcinogenic, and it even destroyed healthy gut bacteria in mice. There are ongoing debates on whether or not this should be used, since it’s difficult to get rid of in waste water.

The Quality of Right Size Smoothies protein

There’s 7 grams of protein in the form of Soy Protein Isolate:

Soy Protein Isolate: 90% protein by weight, most of its fats, carbohydrates, and calories have been lost. It’s considered the most protein rich out of any other soy blends.  Studies show it can lead to estrogen production, and that it can have negative effects on the thyroid.

7 grams isn’t a lot of protein when you compare it to other meal replacements.  For example, an ounce of cooked meat has 7 grams of protein. Getting a high amount of quality protein is necessary in order to prevent hunger, and to provide the body with essential amino acids.

At 2 meals a day you’re only getting 28% of your daily protein intake, this means you have to get the other 72% from your dinner, since the company mentions it’s best to replace 2 meals a day.

The Price and Quality of Right Size Smoothies

Each container has 20 servings, and the lowest price available online on CVS.com has this item listed at $34.99. Since there’s no official website anymore, it’s unknown if this price is fair.

At 2 shake a day the value is:

$34.99/10=$3.49 per a day.

Considering the small amounts of protein used, the artificial and potentially obesity causing sweeteners, and of course the use of additives which may cause side effects, the price doesn’t reflect the quality. For what you’re paying you should expect better ingredients.

Included into this mixture are Artificial Flavors, as well as cheap vitamins and minerals, some of which can cause side effects.

Auto Enrollment

There’s a free trial offer by the  company that many customers have complained turns into a month to month contract. This process is common in businesses who want to secure payments in advance, even when a customer has decided they want to opt out.

The majority reviews from customers mentions that the company behind Right Size Smoothies is difficult to get a hold of, and that they didn’t refund them even after following the return policy protocols.

Now that the company has no official website, and in fact there’s no website for the actual manufacturers, it’s unknown what has been done to ensure customers won’t be automatically billed each month.

Complications with Soy

Soy is one of the most genetically modified crops in the world. Estimates show that at least 93% of it is GMO, and it’s likely the soy in this product isn’t organic.

Besides that, there are also other risks to look out for with soy:

Phytoestrogens: Found in certain plants, it’s not considered a nutrient since the human body does not need it.  There are fears this prevents the natural creation of testosterone, and that it can cause an increase in estrogen. This can prevent weight loss and it can lead to many related issues.

Purines: High amounts of these compounds are found in soy. They can lead to gout, DNA damage which leads to cancer, and increase the risk for symptoms in obese people.

Phytates: Also found in soy, these enzyme inhibitors prevent the healthy absorption of minerals in the digestive tract. Usually fermented soy won’t have this, but Soy Protein Isolate does. It’s unknown exactly how many are in this meal replacement.

Trypsin Inhibitors: Trypsin is important for properly metabolizing protein. Without it the body does not process essential amino acids at an efficient rate. It’s unknown what kind of effect this has on soy protein extracts.

Soy simply isn’t the best option since it has the possibility of causing several unwanted side effects. To supplement with a meal replacement which only has soy can potentially increase symptoms, and even prevent weight loss.


For unknown reasons Right Size Health and Nutrition LLC no longer operates their own website. You can reach them below:

Phone Number: (888) 217-5259

Address: 750 Oakwood Road

Lake Zurich, Illinois 60047

There used to be a Right Size Smoothies site, but it got taken down. There’s also no mention as to how the company operates, or if they have a money back guarantee. The Better Business Bureau has given this company a D-, only a few points away from an F.

People have criticized the company for enrolling customers into auto shipping programs which automatically charges each month.

Customer Opinions

There are currently 61 negative reviews available on Consumer Affairs, and other negative opinions are available on Amazon.com:

“There always hidden shipping charges”

“worst weight loss experience of my life”

“felt like I was starving myself”

“gave me diarrhea”

Most of the complaints had to do with the way the company charges automatically each month. People also reported experiencing side effects and no changes to their appetite. For many, it simply wasn’t enough to help them lose weight.


The main things to consider about this brand include:

  • The protein is low and not from a quality source: Only 7 grams of protein are added, and it all comes from Soy. Soy is often GMO and there are many potential issues which can prevent weight loss. It can possibly increase the amounts of estrogen in the body, and it can potentially override the thyroid, making it hard to lose weight. Soy has also been linked to low testosterone as well as preventing the proper metabolism of protein.
  • Customers often complain about the company’s practices: The average review available mentions that the company locks people into monthly contracts that are difficult to escape from. This is why they’ve been criticized on numerous respected sites such as Consumer Reports and the Better Businesss Beareau. They currently have a D- on the BBB, and many have alleged the company is running a scam. Considering they no longer have a website, it makes it impossible to know if the creators can be held accountable.
  • It’s expensive considering the ingredients: Many of these ingredients have been shown to be potentially toxic, and some of them are only recommended under a doctor’s recommendation. For example, Potassium Iodide is known to cause irreversible damage to the thyroid, which is important in order to regulate weight. These additives are not necessary, and instead they’re cheap substitutes for more wholesome alternatives. One other example is the use of Artificial Flavors; these are added to mimic real ingredients. It’s a cheap way to make the product taste a certain way. However, many of the customers didn’t like either of the 2 flavors.
  • People report not losing weight: One other common complaint is from people who didn’t gain any benefits. Some reported feeling extremely hungry even immedietly after eating. This might be due to the sweeteners added; some of them actually increase the hunger hormone ghrelin. People also mention they experienced side effects, but according to them no weight was lost. The company does list appetite suppression as a main benefit of using these smoothies. The truth is that most of the reviews I read mentioned were from people who felt they were starved.
  • There’s cheap sugars added: 4 of the sweeteners added all have their own individual problems. Some have been shown to be potentially toxic, while others actually increase the risk for obesity and type 2 diabetes. There’s 6 grams of sugar which will be 12 if you replace 2 meals a day. These sugar sources aren’t as good as other substitutes available. They’re also all cheap to produce, which is likely why the company adds them.

Considering all the ingredients, the lack of a company website, questionable use of an auto enrollment plan, and the constant customer complaints, Right Size Smoothies isn’t the best meal replacement out there.

Other options exist to help you lose weight without the use of soy protein and questionable additives.

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