Caprylic Acid: Uses, Benefits, Dosing, and How to Buy Safely

Caprylic acid (also called C8) is a natural medium-chain fatty acid found in coconut oil and palm kernel oil. It’s known for mild antifungal action and is popular in supplements aimed at supporting gut balance. People pick it when they want a straightforward way to address bloating, yeast overgrowth, or to add a clean-burning fat to their diet.

As a medicine or supplement, caprylic acid shows up in two main forms: pure caprylic acid capsules and as part of MCT (medium-chain triglyceride) oil, usually labeled “C8” or “C8/C10” blends. Capsules give a precise dose. MCT oil is easier to add to coffee or smoothies and doubles as a quick energy source for people on low-carb diets.

How people use caprylic acid

Most use it for gut support. The idea is that caprylic acid helps reduce certain yeasts like Candida without wiping out good bacteria. Some use it for occasional digestive upset, others for chronic bloating linked to suspected yeast. Athletes and keto dieters use MCT oil for quick energy and to help stay in ketosis.

Topical products with caprylic acid can show up in skin creams and cleansers. Because it’s a fatty acid, it can help the skin barrier and offer mild antimicrobial benefits. That makes it useful in formulations aimed at oily or acne-prone skin.

Safety, dosing, and buying tips

Typical dosing ranges from 500 mg to 1,000 mg taken two to three times per day for capsule products. If you use MCT oil, a common serving is one tablespoon per day, split into smaller amounts if you’re new to it. Start slow—MCT oil can cause gas, cramping, or diarrhea if you take too much at once.

Watch for basic warnings. If you have liver disease, diabetes, or are pregnant or breastfeeding, talk with your healthcare provider before starting caprylic acid. It can affect blood lipids and energy metabolism, so medical advice is smart if you have chronic conditions or take other medications.

When buying online, pick brands that list the caprylic acid percentage and have third-party lab testing or a certificate of analysis. Avoid products with vague labels like “proprietary blend.” Read reviews for shipping reliability and look for clear return policies. If you’re buying from an online pharmacy for a prescription product that includes caprylic acid, verify licensing and secure checkout.

Finally, treat caprylic acid as part of a plan, not a miracle cure. Combine it with diet changes and medical guidance when dealing with persistent gut issues. If you notice side effects or no improvement after a few weeks, stop use and consult a clinician.

Pairing caprylic acid with probiotics can help maintain good bacteria while addressing yeast. Take probiotics a few hours after caprylic acid to reduce immediate interaction. Store capsules in a cool, dry place away from sunlight. Check expiration dates; oils can go rancid. If you’re unsure about interactions with other supplements like fish oil or vitamin D, ask a pharmacist for safety.