Updated: 01/13/2018

CortiBlock Review - 6 Things You Need to Know


I need to make a confession: I was obsessed with researching CortiBlock. We looked at all aspects of this supplement, including its ingredients, side effects, customer service, and any clinical research provided. Then, we read through all of the reviews we could. After all of this, we condensed it in order to give you the bottom line.

CortiBlock Readers: Click here to find out why we're giving away samples of our product, Burn HD.

What is CortiBlock?

First off, this is a hormone supplement meant to help you lose weight by relieving you of stress. CortiBlock ingredients include vitamins, minerals, magnolia bark extract, beta-sitosterol, phosphatidylserine, rhodiola rosea, green tea extract, panax ginseng, Banaba leaf, vanadyl sulfate, and hoodia gordonii. There are 90 capsules in each bottle, so we assume you take it three times daily.

CortiBlock was made and sold by Chicago Nutrition Company, as far as we can tell. It doesn’t look to be available online or in stores at this time. We like the natural ingredients and green tea does have some strong support, but read on…

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Burn HD (Sample offer)read

Lack of Customer Reviews – “Who Is Really Taking This?”

The first thing we noticed while researching CortiBlock ingredients was a lack of feedback from users. After trying to find any customer reviews, we came up short handed. “There’s no one out there that’s taking, or has taken, this product,” said our Research Editor.

“Without a significant customer base commenting on the product, who’s to say anyone even bought it at all? The slightest doubt in a supplement can cause the dieter to go elsewhere,” mentioned our Research Editor.

Availability – “Where Can You Buy It?”

We were unable to find a single, trustworthy retail website selling CortiBlock. Dieters have nowhere to turn if they want to give this product a try.

“Customers usually buy their supplements from popular online and in store retailers. If they can’t find or learn about them there, they won’t buy it, which can prove to be bad for the company,” says our Research Editor.

Over the years, we found that it can take something like a lack of availability to stop sales. If CortiBlock doesn’t start increasing their presence in popular retailers, then they may start facing some real issues.

The Science – “Any Research?”

Although CortiBlock does contain natural ingredients, the amount of each is hidden by the proprietary blend found in the supplement. Some components have been clinically tested for weight-loss, like green tea extract, but without knowing exactly how much is in each serving, the results are not supported by science. Here at DietSpotlight, we need to see some real research before recommending any product.

What Users Are Saying

"”This works for me on belly fat and love handles when nothing else has. Just finishing up my first bottle, taking 2-3/day. Can see less fat on thighs also.”"

"”This is a excellent product. I have lost some weight. But the important thing for me was the energy with no side affects.”"

"”I have not had any difference in my weight or noticed a change in my health from using this product.”"

The Bottom Line – Does CortiBlock Work?

So, should you race out to buy a box of CortiBlock? Although it does contain some reputable ingredients, a few factors raised some red flags for us. With a lack of research, customer reviews, and availability plaguing this product, we are hesitant to recommend it.

If you are ready to lose weight, we think you should try a supplement that is supported by science, approved by users, and available across the world.

Among the best products we’ve seen this year is one called Dietspotlight Burn, a weight-loss supplement made to work for you. We haven’t seen any reports of serious side effects. Additionally, the ingredient list is clinically tested, which means it’s meant to work for you.

Plus, the makers are providing a Special Trial Offer for all new customers, something we think you may want to look at.

Learn More About Burn HD »
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What are the ingredients in Cortiblock?

CortiBlock ingredients include vitamins, minerals, magnolia bark extract, beta-sitosterol, phosphatidylserine, rhodiola rosea, green tea extract, panax ginseng, Banaba leaf, vanadyl sulfate, and hoodia gordonii.

What are the side effects of Cortiblock?

No reported side effects.

How do I know if CortiBlock is right for me?

Choosing the right product is the #1 question asked by DietSpotlight readers. We recommend trying any product before buying it and know that finding a product with a sample offer is near impossible - so we created our own product, Burn HD, with scientifically backed ingredients.

Click here to get your sample of our powerful fat burner today.

Does Cortiblock work?

No research that is conclusive either way.

What is the price of Cortiblock?

The lowest price for this brand was approximately 15.00 for 90 capsules.

Where can I buy Cortiblock?

At the official website http://chicagonutrition.com/store/ or other online retailers.

How should I take Cortiblock?

Taken by capsules, no other ways sold or listed currently.

How do I contact Cortiblock customer service?

At the official website http://chicagonutrition.com/store/

Can I return Cortiblock?

No clear, does not have a return policy.

What are the most common complaints about Cortiblock?

Lack of reliable scientific research.


Previous CortiBlock Review (Updated January 12, 2009):

What You Should Know

CoriBlock Plus was originally called XiraSlim and is advertised as a metabolism enhancer and a cortisol blocker. This product is supposed to help those that are forty years of age or older reduce the belly fat around their abdomen, but it can help any adult lose weight regardless of age, gender or fitness level.

List of Ingredients

Vitamin C, Vitamin B1, Vitamin B2, Vitamin B6, Vitamin B12, Folic Acid, Calcium Carbonate, Chromium polynicotinate, Biotin, Ridicort, Magnolia Bark Extract 1.5% Honokiol, Beta-Sitosterol, Phosphatidylserine, Valerian Root, Rhodiola Rosea, Suntheanine (as 100% L-Theanine, Synocet, Green Tea Extract, Bitter Orange Peel Extract, BAVA-K, Banaba Leaf, and Vanadyl Sulfate (providing 2.5mcg of vanadium).

Product Features

CortiBlock Plus contains Vitamin B1 and Vitamin B2 which are believed to boost mood, decrease fatigue, and support a healthy nervous system. The ingredients Vitamin B6, Vitamin B12, and Folic Acid are believed to assist in the healthy metabolism of carbohydrates, proteins, and fats and these may also help promote a healthy immune and nervous system. The ingredient Banaba Extract is thought to control the appetite, as well as, regulate blood sugar. The ingredient Chromium is thought to increase muscle, decrease sugar cravings, regulate blood sugar, and increase the rate that the body burns stored fat. The ingredient Bitter Orange contains synephrine which is believed to be an appetite suppressant.


  • CortiBlock Plus is inexpensive when compared to similar products on the market.
  • There are websites that offer discounts on this product.


  • There are no user testimonials available on the CortiBlock Plus website.
  • CortiBlock Plus contains caffeine so those who are sensitive should avoid this product because adverse side effects such as headache and muscle tremors may occur.
  • Those taking MAOI's or other certain medications should not take this product. And those who have high blood pressure, cardiovascular ailments or other certain medical conditions should not take CortiBlock Plus.
  • Women who are pregnant or nursing should not use this product.


CortiBlock Plus doesn't stand out from the rest of the weight loss and cortisol blocking supplements today. This product claims to contain Hoodia Gordonii, yet it is not mentioned on the product labels ingredients. Users will need to assess their health and fitness goals to decide if using CortiBlock Plus is right for them.
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.

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