Caprylic acid, also known as octanoic acid, is a saturated medium-chain fatty acid (MCFA) with a range of applications in both health and industry. It is valued for its potential antifungal and antimicrobial properties, particularly in gut health protocols, and is a key component of medium-chain triglyceride (MCT) oil. For those looking to increase their intake, several natural food sources and concentrated supplement forms are available.
Primary Natural Food Sources
Coconut Oil
Coconut oil is one of the most well-known and abundant natural sources of caprylic acid. While often mistaken for a pure source of this fatty acid, it is actually a mixture of several medium-chain fatty acids, with caprylic acid typically making up around 6-8% of its total fatty acid content. It also contains other MCFAs like lauric acid (C12) and capric acid (C10). Virgin coconut oil can be easily added to smoothies, used in cooking, or consumed directly to benefit from its MCFA content. However, its high content of lauric acid means it is not as concentrated a source of caprylic acid as specialized supplements.
Palm Kernel Oil
Similar to coconut oil, palm kernel oil is another significant plant-based source of caprylic acid. The caprylic acid content in palm kernel oil is generally slightly lower than in coconut oil, typically ranging from 3-5%. Palm kernel oil is often used in processed food products and commercial manufacturing. Like coconut oil, it is a key source from which caprylic acid and other MCFAs are extracted for supplement production.
Dairy Products
Caprylic acid is a natural component of mammalian milk. While the concentration can vary, full-fat dairy products from cows, goats, and sheep contain trace amounts. Goat's milk, in particular, is noted for its caprylic acid content, which is where the fatty acid gets its name (from the Latin word 'capra' for goat). Dairy fats like butter, cheese, and yogurt can contribute small quantities of caprylic acid to your diet.
Supplemental Forms
MCT Oil
For a more concentrated dose, medium-chain triglyceride (MCT) oil is a popular choice. MCT oil is produced by refining coconut or palm oil to isolate and concentrate the medium-chain fatty acids. This process removes longer-chain fatty acids, resulting in a product with a much higher percentage of caprylic acid (C8) and capric acid (C10). MCT oil is often favored for its quick absorption, making it a source of rapidly available energy, especially for those on ketogenic diets. It is a flavorless liquid that can be easily added to coffee, smoothies, or salad dressings.
Caprylic Acid Capsules
Another option for targeted and convenient dosing is caprylic acid in capsule or softgel form. These supplements offer a precise amount of caprylic acid, often delivering a higher concentration to the intestines than food sources alone. Capsules are a great alternative for those who dislike the texture of oil or prefer a more measured intake. They are especially useful for specific health protocols, such as addressing Candida overgrowth.
Caprylic Acid vs. MCT Oil vs. Coconut Oil: A Comparison
To clarify the differences, here is a comparison of the various forms of caprylic acid.
| Option | What it provides | Best for | Notes |
|---|---|---|---|
| Coconut Oil | A blend of fatty acids, including lauric (C12), capric (C10), and caprylic (C8) acids | General cooking, gentle supplement, overall wellness | Lower concentration of caprylic acid; can cause GI upset in large doses. |
| MCT Oil | A concentrated source of caprylic (C8) and capric (C10) triglycerides | Quick energy, targeted ketogenic support, precise dosing | Very high concentration of C8; can be flavorless and easily added to drinks. |
| Caprylic Acid Capsules | Targeted, concentrated caprylic acid | Specific health protocols (e.g., Candida), high intestinal delivery | Offers exact dosage; ideal for those sensitive to oils. |
Commercial and Industrial Applications
Beyond dietary sources, caprylic acid is also found in a variety of commercial and industrial products, though these are not for dietary consumption. These applications leverage its antimicrobial properties and other chemical characteristics:
- Surface Sanitizers: Used as an antimicrobial pesticide in commercial food handling establishments, breweries, and healthcare facilities.
- Personal Care Products: Employed in cosmetics as a texture enhancer, emollient, and antioxidant.
- Flavoring and Fragrances: Esters of caprylic acid are used in perfumery and artificial flavorings.
- Pharmaceuticals: Used for its bactericidal properties and in the purification of monoclonal antibodies.
Conclusion
When asking where you find caprylic acid, the answer ranges from common cooking oils to specialized supplements and industrial products. For natural dietary intake, coconut and palm kernel oil, along with some full-fat dairy products, are the primary sources. For more concentrated and targeted intake, MCT oil and dedicated caprylic acid capsules offer higher percentages of this specific fatty acid. Whether sourced from natural foods or supplements, caprylic acid provides a versatile medium-chain fatty acid with various potential health benefits, most notably in supporting a healthy microbial balance. For further scientific insight, consider exploring this overview of its metabolism and physiological functions: Revisiting the metabolism and physiological functions of caprylic acid..
