Updated: 11/17/2015 - Sponsored by Leptigen

CLA Core Review - Does This Weight-Loss Supplement Work? Are poor customer service and side effects deal breakers?

Editor's Review: 3.5 / 5.0

cla-core-product-imageYou’re about to learn everything you need to know about CLA Core. We delved deep into the ingredients, side effects, clinical studies and customer service. Furthermore, we concentrated on hundreds of consumer comments and reviews. We then scrutinized and summarized to give you the info you need.

EDITOR'S TIP: Substitute CLA Core with a proven fat burner such as Leptigen for better results.

What You Need to Know

First off, MusclePharm CLA Core is a weight-loss supplement consisting of conjugated linoleic acid, extra virgin olive oil and avocado oil. The recommended serving size is one to two capsules per day, which supposedly helps dieters lose more weight. The main benefit is portability.

The supplement, introduced by MusclePharm in 2008, does not use synthetic ingredients, a bonus. You can buy the product on the official website and through trusted retailers. We like that there are some favorable customer comments and a money-back guarantee, but read on…

Poor Customer Service – “Hello?”

The first negative aspect of CLA Core service was an unwillingness to resolve concerns. “When dieters purchase supplements from a company, there’s a chance there will be questions,” said our Research Editor. “Customers expect exceptional care or they’ll spend their money elsewhere.”

“I ordered some products and did not receive them. I’ve contacted the company and they are refusing to assist me,” commented one user.

“Muscle Pharm failed on their claim to respond to their contact us form within the 24 hour claim. I have YET to receive a response from your company,” said a customer.

Scroll below for one of the best products we’ve seen in 2015.

FDA Judgments – “A Concern”

On November of 2014, MusclePharm was involved in a lawsuit about a supplement other than CLA Core. The premise of the complaint related to the amount of protein in a formula. This may not directly pertain to this product, but it’s a concern because it measures the company’s honesty. The issue has yet to be resolved.

Side Effects – “Reported Reactions”

According to multiple consumer comments, CLA Core side effects are troublesome. “Started taking this with my vitamins and eating a well-balanced diet and after a week of use I notice that it got harder and harder for me to go to the bathroom,” reported a dieter.

“It started giving me a rash on my face so I couldn’t continue using it, unfortunately I was excited to use it as well, but I have to pass on it,” said a user.

“This made me break out in pimples like crazy!,” said a consumer.

Our research shows that if any part of a supplement is a concern, such as side effects, dieters may not experience long-term success. If CLA Core does in fact cause reactions, this is a problem.

The Science – “Legit?”

Although the official CLA Core website states the supplement aids in weight-loss, we couldn’t find any published science supporting the claims. At DietSpotlight, locating research backing a product is critical. If a company can’t provide clinical studies, we move on.

The Bottom Line – Does CLA Core Work?

So, we gave this one the once over and after careful consideration of CLA Core, we’ve come to a conclusion. The positives include the money-back guarantee and the availability of the product, but we are hesitant about it because the formula is not linked to published clinical research. Plus, we have concerns about the “F” BBB rating and the pending lawsuit against the company.

If you’d like to slim your waistline, we suggest going with a product that both saves you money, gives you ingredients that are supported by published clinical studies and isn’t in any legal battles.

Among the best products we’ve seen in 2015 is one called Leptigen. The four-ingredient proprietary blend has been shown in published scientific research to help enhance fat loss and increase metabolism. There’s no chatter about adverse side effects and reviews around the web show people are noticing excellent results.

The company behind Leptigen shows confidence in the supplement by providing a Special Trial Offer, which is a good choice.

Learn More About Leptigen »
GD Star Rating

How Does CLA Core Compare?

Previous CLA Core Review (Updated October 16, 2014):

What You Should Know

Click Here To See Our Highest Rated Review

CLA Core is a conjugated linoleic acid fat burner. There are tons of these products on the market and while CLA used to be the biggest ingredient in weight loss, research does not back up the claims of many supplement creators. Conjugated linoleic acid is commonly found in meat and added to some protein supplements. The most common source of the acid, however, is safflower oil. MusclePharm, the creator of CLA Core, combines CLA with olive oil and avocado oil. While the supplement may support heart health, there is very little impact, if any, on weight loss.

List of Ingredients

  • Conjugated Linoleic Acid
  • Extra Virgin Olive Oil
  • Avocado Oil

Product Features

MusclePharm sells CLA Core on Bodybuilding.com where a complete list of ingredients is offered in label format. The product description is tiny and offers no evidence that any of the claims are clinically proven. The main ingredient in CLA Core is conjugated linoleic acid or CLA. CLA is clinically proven to boost lean muscle mass and reduce body fat in athletes and fit users. The same results are not proven in the overweight population. Olive oil and avocado oil provide a good source of fatty acids, ideal for promoting overall health, but not great for weight loss. If a dieter is following a low-carbohydrates diet plan like Atkins, this supplement is completely within the rules of the diet and may help the dieter lose more weight by providing a healthy fat to the diet. However, each softgel contains only one gram of fat, so the impact even with a low-carb diet is minimal. When we searched the official website for MusclePharm, we did not notice CLA Core listed as one of the products. Either MusclePharm is no longer producing the supplement or they are not promoting it actively online. If MusclePharm is not willing to stand behind the product on the official website, why should the dieter trust the supplement?

See Our Featured


  • Ingredients are listed online.
  • CLA may improve lean muscle mass and decrease fat stores in athletic users.
  • Some clinical testing has been completed on CLA.
  • Fatty acids support cardiovascular health.


  • Will not impact metabolism for the average dieter.
  • CLA may cause some gastro or stomach side effects.


CLA Core is another conjugated linoleic acid supplement that claims to help the dieter burn more fat. This supplement is not listed on the MusclePharm website so either the company has chosen to sell it under the radar or it's not the hit they thought it would be. With so many CLA supplements available, this one does not stand out above the rest.


We narrowed down hundreds of user comments about CLA Core into this helpful FAQ.

What are the side effects of CLA Core?

Some potential side effects of CLA Core include upset stomach, nausea, diarrhea and fatigue.

What are the ingredients in CLA Core?

The ingredients in CLA Core are conjugated linoleic acid, extra virgin olive oil, avocado oil and gelatin.

Does CLA Core work?

We didn’t find scientific research proving the effectiveness of CLA Core. You may want to think hard about changing it up a bit and replacing CLA Core with a supplement like Leptigen, which contains ingredients proven in clinical studies to work.

How much does CLA Core cost?

One bottle of CLA Core, containing 90 servings, costs $21.99. The 180-serving container sells for $29.99.

What is CLA Core’s BBB rating?

The CLA Core Better Business rating was an abysmal F. The company behind CLA Core is MusclePharm.

How should I take CLA Core?

You should take one CLA Core capsule per day. If you follow the directions, each bottle lasts between three and six months.

Can I take CLA Core if I have a health condition?

Anyone under 18 years of age, those taking prescription medications, anyone with health conditions and women who are pregnant or nursing should contact a healthcare professional prior to using a weight-loss supplement, including CLA Core.

What do users like about CLA Core?

Some users liked the low price tag of CLA Core and that the supplement is readily available.

What do users NOT like about CLA Core?

We found that some users didn’t like the side effects of CLA Core and that the customer service department was not helpful.

How do I contact the CLA Core customer service department?

You can reach out to the CLA Core customer service department by mailing correspondence to MusclePharm Corporation Attn: Customer Service/Customer Relations 60 Anthony Dr. Newark, OH 46055, emailing info@musclepharm.com or by calling 1-800-292-3909.

Are allergens present in CLA Core?

No, allergens aren’t present in CLA Core, but the supplement is manufactured in a facility that produces products containing allergens.

Do I need to change eating habits on CLA Core?

You don’t need to change eating habits on CLA Core, but the company recommends eating balanced meals to assist with weight management.

Does CLA Core come with a guarantee?

The official website doesn’t mention a guarantee with CLA Core.

Do you know of any special deals or discounts on CLA Core?

There are special deals and discounts on CLA Core. If you purchase two bottles from the official website, you will receive one free. However, our time has been spent addressing our readers overwhelming reaction over the past few months to Leptigen’s Special Trial Offer, which is just the cost of shipping and handling. Click here to try it out.

2 User Reviews About CLA Core

Leave comments below
  • 1
    Vincent Ackerman

    CLA Core is back in the MP web site 3/28/2014


  • 2

    It is listed on the front page of the main website. Just hit store.


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