Conjugated Linoleic Acid Oil

Conjugated linoleic acid reference formula at a default of 1,000 mg per serving, developed as a softgel or powder.

Conjugated Linoleic Acid is a reference formula for brands building a single-ingredient CLA product around 1,000 mg per serving. The brand sets the final amount for its market, and reference labels span 400 to 4,800 mg per serving.

Softgel is the lead format because CLA is supplied as an oil, with a powder version developed for brands that prefer a dry unit. The work centers on the oil itself: the isomer mixture, the CLA content of the oil and its oxidation behavior decide how large the unit is and how long it keeps.

Ingredient Composition

IngredientPer ServingRaw Material FormAlternative Form (same amount of active)
Conjugated Linoleic Acid1000 mgCLA oil (free fatty acid or triglyceride form), specified as CLA content; 1,000 mg CLA per servingCLA powder on a carrier, with the input recalculated from its CLA content

The amount is stated as mg of conjugated linoleic acid, not of the oil that carries it. CLA is a mixture of isomers of linoleic acid, so the specification states the isomer ratio and whether the CLA is bound as free fatty acid or as triglyceride; the weight basis follows from that. The cached molecular weight for linoleic acid is C18H32O2, 280.4 g/mol (PubChem CID 5280450).

Intended Benefits & Formula Rationale

This formula is designed for products positioned around fatty acid nutrition in weight and metabolic programs. CLA is included as the single ingredient so that the concept stays on one lipid.

Intended Benefit DirectionKey IngredientsFormulation Rationale
Oxidative stress markerConjugated Linoleic AcidA meta-analysis of 22 randomized trials reports that CLA supplementation decreased malondialdehyde, a marker of oxidative stress, while alanine aminotransferase and aspartate aminotransferase did not change [2]. Evidence: Referenced
Body composition with exerciseConjugated Linoleic AcidA meta-analysis of 20 trials reports that CLA combined with exercise decreased body fat and insulin resistance compared with exercise alone, but was not effective for body weight, exercise performance or lipid profile, and the authors note that studies report conflicting results [1]. Evidence: Mixed

The amount is a design choice. The analyses in [1] and [2] pool trials of different doses and durations and do not test this formula, so any claim on a finished product is reviewed for each market.

Available Formats

Reference labels are mostly softgels, with powders and capsules behind them; softgel and powder are developed here.

FormatUnitPer ServingPack SizeOther Ingredients (typical)Suitability
Softgel1 softgelConjugated linoleic acid 1,000 mg90 or 180 softgelsGelatin or plant-based shell, glycerin, purified waterLead format; oil in a sealed shell
Powder1 stick pack, 3 gConjugated linoleic acid 1,000 mg30 stick packsCarrier, sweetener, acid, flavor, flow agentDry unit for drink mixes

Raw Material Input & Fill (Design Estimate)

Design estimates. The CLA oil is assumed to contain 80% CLA by weight, so 1,000 mg of CLA needs 1,250 mg of oil; the CLA powder is assumed at 50% CLA on its carrier, so the same amount needs 2,000 mg of powder. Both contents are assumptions to be replaced by the supplier’s assay.

FormatRaw Material Input per UnitDesign FillBalance for ExcipientsVerification Before Scale-Up
SoftgelCLA oil 1,250 mg1,300 mg fill50 mgIsomer ratio and CLA assay of the oil, peroxide value, fill weight variation, shell compatibility
PowderCLA powder 2,000 mg3 g per stick pack1,000 mgOil release from the carrier, moisture uptake, clumping, taste

Capsule is a separate project, because a hard capsule would need a CLA powder at a much larger fill; gummy and liquid are also separate projects.

Formulation Considerations

Unit size. At 1,000 mg of CLA the oil fill is about 1.25 g, which is an oblong softgel of the larger sizes. Brands that want a smaller unit can split the serving over two softgels or move to a more concentrated oil, which changes the cost and the isomer ratio.
Oxidation. CLA is a polyunsaturated fatty acid mixture in a liquid oil, so oxygen, light and heat are the stability risks. Antioxidant choice, nitrogen flushing and opaque packaging are decided in formulation, and the peroxide value is tracked on stability.
Isomer ratio. CLA oils are sold with different ratios of their isomers, and the ratio is part of the specification. Changing the supplier’s grade changes the isomer content even when the CLA percentage is the same.
Powder format. An oil adsorbed onto a carrier releases oil over time and can cake. Carrier level, moisture limits and a barrier pack are tested in the pilot run, and the dispersion in water is checked.

Customization Options

Brands adjust the amount, the oil grade, the format and the add-ons.

ParameterRangeNote
CLA per serving1000, 2000 or 3000 mgExamples for the brand; softgel count rises with the amount
Oil gradeFree fatty acid or triglycerideChanges the weight basis and the oxidation behavior
FormatSoftgel or powderCapsule, gummy and liquid are separate projects
Add-onsGreen tea extract, L-carnitineA second ingredient changes the fill weight and the blend plan

The pilot run confirms the isomer ratio and CLA content of the chosen oil, softgel fill weight and seal, and the assay after a short stability hold.

Flavor Options

FormatSuggested FlavorsWhy
PowderCitrus, berry, unflavoredFruit flavors cover the oily note of the carrier

Technical Status & Data Sources

ItemStatusDetails
Reference formulaNIH DSLDThe ingredient and amount come from a labeled product in the NIH DSLD (1000 mg on the label of CF000644; example DSLD labels 4259, 26760, 72244). The label names the ingredient as conjugated linoleic acid; the oil form is set.
SpecificationSet in formulationCLA oil at 1,000 mg CLA per serving with a stated isomer ratio; CLA assay, peroxide value, acid value, microbial and heavy-metal limits and method are fixed with the supplier. Unit size, fill weight and stability are set in formulation.
Data sourceNIH DSLDDSLD v9.4.0, downloaded 2026-01-10: 50,824 reference formulas merged from on-market labels with complete ingredient amounts. Counts show how labels are distributed.
Market reviewPer marketDose limits, labeling and claims are reviewed for each sales market before a finished product is developed.
ReferencesSources[1] Liang CW, Cheng HY, Lee YH, et al. Effects of conjugated linoleic acid and exercise on body composition and obesity: a systematic review and meta-analysis. Nutr Rev. 2023;81(4):397-415. DOI · PubMed<br>[2] Haghighat N, Shimi G, Shiraseb F, et al. The effects of conjugated linoleic acid supplementation on liver function enzymes and malondialdehyde in adults: A GRADE-assessed systematic review and dose-response meta-analysis. Pharmacol Res. 2022;186:106518. DOI · PubMed

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