The best supplements with conjugated linoleic acid (CLA) - TOP 5 in 2026
CLA, or Conjugated Linoleic Acid (Conjugated Linoleic Acid), is a group of linoleic acid isomers that differ in chemical structure as well as biological properties. Two isomers are most commonly studied and used: cis-9, trans-11, and trans-10, cis-12. The first isomer occurs naturally in foods and is credited with beneficial effects on cardiovascular health and anti-inflammatory properties. The second isomer, which is often found in dietary supplements, has been shown to have stronger effects in the context of fat reduction. CLA is an unsaturated fatty acid of the omega-6 family naturally found in animal products and dairy products. CLA is credited with a number of potential health benefits, including effects on lipid metabolism and fat reduction, making it a popular ingredient in weight loss supplements. In addition, conjugated linoleic acid has shown anti-inflammatory properties and may have beneficial effects on the immune system. To help you choose the best supplement, we have created a ranking of preparations with CLA. Check out the summary and choose the product that will help you maintain a slim figure and support your health.
Ranking factors we took into account are:
- Effectiveness
- Content of CLA
- Composition
- Ease of use
- No adverse reactions
- Effectiveness
- Price
What qualities to look for in the best supplements with CLA?
Content of active isomers - The best supplements should contain optimal proportions of the two most important CLA isomers: cis-9, trans-11 and trans-10, cis-12, which are key to metabolic and health effects. Too much of either, especially trans-10, cis-12, may be associated with a higher risk of side effects.
Source of origin - CLA can be derived from both natural sources (such as safflower oil) and synthetically. Natural-derived supplements are a better choice, as they are safer for health and better absorbed.
Purity of composition - It's worth choosing products without unnecessary additives, such as artificial colors, preservatives or fillers. A short, clear composition means a better quality supplement.
Form of supplement - Most often CLA comes in the form of capsules, which are easy to swallow and well absorbed. It is important that the capsules are made of good quality ingredients, preferably plant-based (for vegans and vegetarians).
Dose of CLA - An effective daily dose should be between 3 and 6 grams of CLA. It's a good idea to check how much conjugated linoleic acid is actually in one capsule to avoid having to take a very large number of pills per day.
Quality Certifications and Tests - A good supplement should have quality certifications confirming the purity and safety of the product, such as GMP (Good Manufacturing Practice), ISO or tests for heavy metals and other contaminants.
See our ranking of the best supplements with conjugated linoleic acid (CLA):
Nutridume's dietary supplement boasts a clean and simple formulation, which our test group liked very much. In addition, they were pleased to note the high daily dose of CLA of 1265 mg. However, what particularly won the praise of the testers was its effective action in supporting the weight loss process unencumbered by side effects or other unwanted effects. Regular intake of Nutridome conjugated linoleic acid supports lipid metabolism, thus promoting fat burning and allowing weight reduction without yoyo effect. Combined with physical activity and a healthy diet, CLA supplementation is an excellent complement, ensuring the maintenance of health, fitness and a beautiful figure. Test subjects also appreciated the product's vegan formula, ease of taking the capsules, efficient packaging and favorable price. They unanimously concluded that Nutridome's CLA is a top-quality supplement.
The dietary supplement from the American brand Now Foods features a simple formulation free of unnecessary fillers and aggressive preservatives. However, some of our testers lamented the fact that its formula is not vegan. The daily intake is not clearly set by the manufacturer and ranges from 1 to 3 capsules. There are 800 mg of CLA in one capsule, which according to most testers is not a satisfactory dose and forces them to take more than one capsule a day. However, they appreciated the natural origin of conjugated linoleic acid - it was extracted from safflower seed oil. Regular intake of Now Foods, combined with physical activity, effectively reduces body weight and supports weight loss. The gel capsules are easy to take, and the price of the supplement is affordable.
OstroVit CLA 1000 is a dietary supplement that is a source of CLA conjugated linoleic acid. It is another preparation in our ranking with a simple composition devoid of substances that can adversely affect the health of the body. There are 780 mg of CLA in 1 capsule. The recommended daily intake is 1 capsule taken 3 times a day, which according to most testers is an unnecessary inconvenience. However, they admitted at the same time that the OstroVit supplement effectively aids weight loss and supports metabolic processes. In addition, in the case of physically active people, it supports the growth of lean muscle mass, allowing them to enjoy a slim figure and good physical condition. A package of the supplement is enough for 30 days of use, which, considering the affordable price, is an economical solution. OstroVit CLA is unfortunately not suitable for vegans and vegetarians.
The CLA 800 Plus dietary supplement from Noble Pharma has a simple formulation and features a high daily dose of conjugated linoleic acid (3.2 g). However, what our testers immediately pointed out was that the recommended serving is as many as 4 capsules. Not only does this make it difficult to use the supplement, but it also makes the supplement package last only 15 days. For this reason, test subjects felt that it was not an economical option. Regular intake of Noble Pharma's CLA is said to increase the metabolic rate, thus aiding weight reduction. In addition, the supplement may also benefit cardiovascular health, although this effect of CLA is still under investigation. The female testing group, however, found the packaging layout unattractive.
The dietary supplement from Trec was ranked last in the ranking due to the presence of artificial colorings in the composition and possible allergen content (milk, soy, egg, nuts). In one serving of 3 capsules there are 1436 mg of conjugated linoleic acid, which is a good dose. Therefore, systematic use of Trec conjugated linoleic acid can effectively support weight loss and help maintain a slim figure, thanks to its properties that improve glucose and lipid metabolism. On the other hand, when combined with physical activity, CLA helps maintain physical fitness and gain lean mass. Testers also considered the size of the capsules, which make them difficult to use, as well as their unpleasant taste and smell, to be a major drawback of the Trec product. However, they appreciated the efficiency of the packaging and the favorable price.
