6 Best CLA Supplements 2018: Rid Fat and Prevent IT From Coming Back!

Mihai Voinea
Medically reviewed by Mihai Voinea Doctor of Medicine (M.D.) — Research analysis by Adam Pius

​Do you work out and eat healthfully but still have areas of fat mass on your body? The best CLA supplement can reduce body fat and prevent you from gaining it back.

What does CLA do? Conjugate linoleic acid, or CLA, is an omega fatty acid that helps burn fat when it is taken as a supplement. CLA also increases testosterone levels and has been thought to increase strength and lean body fat mass.

NatureWise CLA 1250 is a CLA fat burner that delivers a high-potency formula that is tested by a third party to ensure its strength and quality.

Sports Research CLA 1250 is the only supplement reviewed that’s registered as vegan and vegetarian-safe by the Vegan Society. It does contain more fillers than some of the other options.

You get a lot of the Bulk Supplements CLA Softgels for the price. However, the potency was lower than that of some of the other brands.

With only 20 servings per bottle, Cellucor CLK is pretty expensive. It does contain other ingredients that help boost belly fat loss, but it also has artificial colors.

Mesomorph CLA 3000 is a more potent CLA vitamin than most of the other formulas. With 3,000 mg of CLA in a two-pill serving, you only have to take half as many pills as most of the other products in our CLA​ reviews.

The GNC Pro Performance supplements are more expensive than the others if you’re buying them only for the CLA. They have a higher potency than any other CLA ​products reviewed here, though. They also contain other vitamins and supplements for the price.

​CLA ​Products Comparison Table

​The Best CLA Supplement Reviews

Editor Rating

CLA Supplement NatureWise CLA 1250

Each NatureWise CLA 1250 softgel contains 1,000 mg of active CLA from non-GMO safflower oil. An on-staff doctor helps to develop the products for this company. The company claims that carob is used in the softgels to protect the oil inside from going rancid as a result of exposure to light.

Things We Liked

  • Purity and potency tested by independent third party
  • Made in the U.S.
  • No artificial ingredients
  • No GMOs

Things We Didn't Like

  • Capsules may stick together in the package

Editor Rating

CLA Supplement Sports Research CLA 1250

This Sports Research CLA supplement claims to contain at least 1,000 mg of CLA. Although the description claims that the supplement contains no artificial ingredients or preservatives, many people have undesirable reactions to carrageenan and Sorbitol, two of the ingredients.

Things We Liked

  • Made in the U.S.
  • No GMOs

Things We Didn't Like

  • Contains carrageenan, which can irritate the digestive tract

Editor Rating

CLA Supplement Bulk Supplements CLA Softgels

These softgels are created using no fillers. The CLA comes from pure safflower oil. One serving size of two pills contains 1,589 mg of CLA. The company has the supplements lab tested to guarantee their purity.

Things We Liked

  • Low price
  • No fillers

Things We Didn't Like

  • Labeling doesn’t state where product is manufactured
  • Packaging doesn’t protect pills from getting crushed or punctured

Editor Rating

CLA Supplement Cellucor CLK Stimulant Free

This formula contains L-carnitine tartrate, an amino acid that gives you energy and helps trans-fatty acid perform their function. It also has Razberi-K, raspberry ketones which has been shown to support the reduction of body fat lean mass. The supplement also contains SLIMPRO®, a fish protein that helps curb the appetite. Three softgels contain 1,700 mg of CLA.

Things We Liked

  • Incorporates other weight loss supplement into one formula
  • Have a sweet, raspberry-like smell

Things We Didn't Like

  • Higher price
  • Low CLA potency per serving size
  • Contains allergens and artificial ingredients

Editor Rating

Mesomorph CLA 3000

Mesomorph claims to be the only CLA product that delivers 3,000 mg of CLA per serving. The product is all natural, but it does include caramel coloring. Caramel coloring is generally regarded as safe by the FDA, but some people who focus on clean eating prefer to avoid it.

Things We Liked

  • Great value
  • High potency
  • 60-day money-back guarantee
  • Made in the U.S.

Things We Didn't Like

  • Caramel coloring

Editor Rating


This is a multivitamin that contains 4,000 mg of CLA per pack. You’re supposed to take the contents of one pack every day. The CLA capsules don’t contain any fillers, but some of the other supplements in the packs do.

Things We Liked

  • Multi-vitamin supplement comes in one convenient package
  • High dosage of CLA

Things We Didn't Like

  • Fillers and artificial colors in some of the supplements

​CLA Supplements: What You Need to Know

Benefits of CLA

People take CLA pills in order to burn fat and retain lean muscle mass. Common CLA benefits are reported to be:

  • Increased metabolism
  • Increased muscle growth or/and muscle mass
  • Decreased cholesterol
  • Lowered triglycerides
  • Reduced insulin resistance
  • Diminished risk of food allergies
  • Boosted immune system
  • Anti-carcinogenic effects
  • Reduction in heart disease risk factors
  • Weight loss
  • Maintain blood pressure

What Is CLA and How Does CLA Work?

Studies show that CLA slows weight gain and considerably reduces body fat. One of the most frequently cited CLA studies was published in the December, 2000 Journal of Nutrition. Subjects who took CLA lost about six pounds more than the placebo group without changing their diets.

In one study that investigated CLA’s effectiveness in preventing holiday weight gain, subjects experienced reduced body fat and better moods over six months. Another study showed that CLA supplementation may increase testosterone.

Essential fatty acids help increase metabolism, control cholesterol and improve immunity. CLA is similar to omega-6 fatty acids, and are found in foods like meat and eggs but are not produced in the body. It has been found to increase the body’s basal metabolic rate.

That means that the number of calories that your body burns just by being alive is boosted by CLA. As the body turns food into energy more efficiently, the ratio of fat to muscle changes for the better.

If you exercise and eat a healthy diet, taking ​CLA should help you be more likely to gain lean body mass instead of belly fat.

Do you want to know when to take CLA? It is recommended to take CLA before a meal. CLA side effects are not widespread, but some users report digestive distress.

How Can You Increase Your Intake of CLA?

You can increase your CLA intake by consuming more grass-fed beef and dairy products. According to the National Cattlemen’s Beef Association, ground beef of grass-fed cattle contains about seven times as much CLA as pork or chicken. Homogenized milk, plain yogurt and mozzarella cheese may be the preferred dietary sources of CLA. Grass-fed cow and cow milk are among the highest sources.

best cla supplement beef

It is difficult to estimate how much CLA the average person consumes. The average person in the U.S. probably takes in about 200 mg of CLA per day. Research shows that you can lose abdominal fat by taking 3,200 mg of CLA per day.

Evidence suggests that you should not take resveratrol and CLA together. Doing so will negate both supplements’ fat-burning properties.


It was difficult to decide, but we chose Mesomorph CLA 3000 as the winner of ​our CLA supplement reviews. It has more potency per pill than any other product at the same price point. The pills don’t contain any fillers other than caramel color, and they are made in the U.S.

Does CLA work and really has health benefit? No matter what you use, it can take some time for a CLA dietary supplement to deliver results. You should also understand that taking CLA to lose weight is not magic.

You must follow a reasonable exercise and clinical nutrition regimen in order to see good results (to obtain the body composition you want). Specific exercise tools and equipment might also help. If you’re already healthy and working out regularly, you may notice improved muscle definition and reduced body fat when taking this supplement.

Image credits: Amazon.com

Adam Pius (Research Analysis)

My Trainer Bob was founded by Adam to supply a great resource on fitness and health and to become a trusted resource where people can come and learn how to stay fit.

Mihai Voinea (Editor)

Mihai is a medical doctor and entrepreneur with a burning obsession for performance and health. Mihai is also an IronMan, ultramarathon runner, and co-founder of Marsilian, which owns two e-learning platforms for future medical students and doctors.