Interactions on record — worth a quick check against your medications. Based on 2 of 3 ingredients. Check your meds →
Dietary supplement

MCT Oil Unflavored Ingredients & Drug Interactions

by Onnit

MCT Oil Unflavored label
See full label image
Liquid Category: Fat/fatty Acid
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking MCT Oil Unflavored against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

MCT Oil Unflavored is a dietary supplement by Onnit with 3 active ingredients. Its ingredients are commonly taken for candida and yeast overgrowth, gut health support, antimicrobial.Based on those ingredients, 262 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Caprylic Acid. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against MCT Oil Unflavored by Onnit

Ask about any prescription or over-the-counter medication and we check it for interactions with MCT Oil Unflavored by Onnit — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of MCT Oil Unflavored by Onnit

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 20, 2026

What’s inside

Partial disclosure
Ingredient Transparency · database check
Partial

Most active ingredients list an amount, but at least one is hidden in a blend or missing.

Why this rating?
  • The label discloses an exact amount for 3 of its 5 active ingredients.
  • “Medium Chain Triglycerides” is listed as a grouped ingredient — the label gives one combined amount (12.70 Gram(s)) without saying how much of each component you get.

Onnit MCT Oil Unflavored is a liquid supplement with 5 ingredients. The active components are medium-chain triglycerides (MCTs) — a type of fat — broken down into its individual fatty acids: caprylic acid, capric acid, and lauric acid.

These are shorter-chain fats that your body can absorb and use relatively quickly, which is why MCT products are popular in ketogenic and low-carb nutrition. The product contains no inactive ingredients or fillers.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

The label doesn't state a purpose we can grade — see each ingredient's own graded uses on its monograph instead.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence for this product's uses isn't well established in the data we hold. Caprylic acid is rated as having insufficient reliable evidence for epilepsy and essential tremor.

Lauric acid similarly lacks strong evidence for bronchitis, vaginal yeast infections, genital herpes, or common cold. If you're considering MCT oil for a specific health goal, talk it over with your doctor or pharmacist — they can tell you what the broader research shows and whether it makes sense for you.

The evidence, ingredient by ingredient Caprylic Acid Lauric Acid

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Caprylic acid appears well tolerated short-term when taken by mouth, though a small number of people have reported mild abdominal discomfort, changes in taste, dizziness, headache, or fatigue. Lauric acid in large amounts may raise total and LDL cholesterol (the "bad" kind), though it also raises HDL (the "good" kind), so the net heart risk is unclear.

Nausea can occur with lauric acid, especially at higher doses. For pregnancy: lauric acid is rated likely safe.

Caprylic acid safety in pregnancy and breastfeeding isn't well studied in supplement form, even though it occurs naturally in breast milk — talk with your doctor or pharmacist before using this product if you're pregnant or nursing. Food amounts of these acids are generally recognized as safe, but supplement doses lack robust safety data.

Side effects, ingredient by ingredient Caprylic Acid Lauric Acid

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 2 matched ingredients can interact with medications — Caprylic Acid.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 262 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, double-check with your doctor or pharmacist if you take blood thinners like warfarin, antihypertensive drugs (blood pressure medications), or NSAIDs such as ibuprofen — all have documented moderate-severity interactions with caprylic acid in this product.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glancePartially disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

MCT oil is a concentrated source of medium-chain fatty acids used in ketogenic and low-carb diets. If you take blood thinners, blood pressure drugs, or NSAIDs, check with your doctor or pharmacist before starting this product, because caprylic acid may theoretically affect how your body handles these medications.

If you're pregnant, nursing, or have concerns about cholesterol, talk it over with your own healthcare provider first.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 2 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 24, 2021.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about MCT Oil Unflavored, straight from the product label.

Brand Onnit
Barcode (UPC) 819444013305
Net contents 24 Fluid Ounce(s); 709 Milliliter(s)
Market status On market
Date entered into DSLD Sep 24, 2021
DSLD ID 256680
Product type Fat/fatty Acid
Supplement form Liquid
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for MCT Oil Unflavored by Onnit, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
15 mL
Maximum serving Sizes:
15 mL
Servings per container
47
UPC/BARCODE
819444013305
IngredientAmount% DV
Calories130 Calorie(s)--
Saturated Fat14 Gram(s)70%
Polyunsaturated Fat0 Gram(s)--
Total Fat14 Gram(s)18%
Monounsaturated Fat0 Gram(s)--
Caprylic Acid5.2 Gram(s)--
Capric Acid3.4 Gram(s)--
Lauric Acid3.8 Gram(s)--
Medium Chain Triglycerides12.7 Gram(s)--

Other ingredients: None

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements

Quick + active fuel

Palm oil, a leading constituent in many other MCT oils on the market, is typically harvested from native palm forests , contributing to the destruction of the last remaining habitats for orangutans. So enjoy our best in class coconut-based MCT Oil and send a karmic high five to the great red ape.

Pure premium

Product of Malaysia Not a low calorie supplement. See nutrition information for saturated fat content. #Getonnit

Formulation

Contains 0% Palm

Supports optimal health

Dairy Free Gluten Free

Vegan

For fast & active fuel Supports Ketogenic diet

Formula

Our pure coconut-based MCT Oil (medium chain triglycerides) not only provides 12.7 grams of medium chain fatty acids that started the MCT oil craze, it also contains 3.8 grams of lauric acid, a compound found in coconuts that is thought to support optimal health.

Medium Chain Triglycerides Derived from Pure Coconut Oil

5.2 g Caprylic acid per serving 3.8 g Lauric acid per serving 3.4 g Capric acid per serving

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take one tablespoon daily.

Storage

Store in a cool, dry place.

Precautions

Consult a medical doctor before taking this or any other nutritional supplement if you are pregnant, nursing, have or suspect a medical condition or are taking any medications.

Keep out of reach of children.

Contains Tree Nuts (Coconut)

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

FDA Statement of Identity

Dietary Supplement

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

MCT Oil Unflavored by Onnit label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

MCT Oil Unflavored label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in MCT Oil Unflavored by Onnit

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size15 mL Dosage formLiquid Servings per container47 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Medium Chain Triglycerides

12.7 Gram(s) per serving Form: Coconut

Other (inactive) ingredients: None. These complete the product’s ingredient list but are not active constituents.

Interaction report

MCT Oil Unflavored by Onnit Drug Interactions

Want to check YOUR meds against MCT Oil Unflavored?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
262Drugs
262 Moderate

Ingredients driving the most interactions

Caprylic Acid 262

Individual Drug Interactions

The ingredients in MCT Oil Unflavored interact with 262 drugs. Click any drug to see the details.

1 of the 3 ingredients in MCT Oil Unflavored interact with drugs. Each result below shows which ingredient is responsible. Caprylic Acid

Each ingredient & the kinds of drugs it affects

For each ingredient in MCT Oil Unflavored with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Caprylic Acid3 drug types · 262 drugs

Antihypertensive Drugs

Theoretically, caprylic acid might increase the risk of hypotension when used with antihypertensive drugs.
Animal research suggests that caprylic acid might have positive inotropic effects, resulting in reduced arterial pressure and vascular resistance and increased cardiac output.

Likelihood Possible Evidence D
Nonsteroidal Anti-Inflammatory Drugs (Nsaids)

Theoretically, caprylic acid might increase plasma concentrations of NSAIDs.
In vitro research suggests that caprylic acid might displace NSAIDs from binding sites on albumin. This effect has not been reported in humans.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, caprylic acid might increase plasma concentrations of warfarin.
In vitro research suggests that high doses of caprylic acid might displace warfarin from albumin binding sites. This effect has not been reported in humans.

Likelihood Possible Evidence D
Caprylic Acid full monograph & interactions
The maker

Brand information

Manufacturer and brand details for MCT Oil Unflavored, from the product label.

Onnit

See all Onnit products
Name
Onnit Labs, Inc.
City
Austin
State
TX
ZipCode
78744
Phone Number
1-855-666-4899
Pharmacist Counseling Corner

MCT Oil Unflavored by Onnit: Common Questions

Does MCT Oil Unflavored by Onnit interact with any medications?
Yes. Based on its ingredients, MCT Oil Unflavored has a known interaction with 262 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
MCT Oil Unflavored contains 3 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What exactly are medium-chain triglycerides?
They're a type of fat with shorter chains than most dietary fats, so your body absorbs and uses them faster. This product breaks them down into their three main fatty acids: caprylic, capric, and lauric acid.
Can I take this if I'm pregnant or breastfeeding?
Lauric acid in this product is rated likely safe in pregnancy. Caprylic acid safety in supplement doses during pregnancy and nursing isn't well studied, even though it occurs naturally in breast milk. Talk with your doctor or pharmacist for personalized advice before using it.
Will MCT oil raise my cholesterol?
Lauric acid, one of the main ingredients, can raise both total and LDL (bad) cholesterol when consumed in large amounts — but it also raises HDL (good) cholesterol, so the overall heart-disease risk is unclear. If you have cholesterol concerns, check with your doctor.
What side effects might I notice?
Mild abdominal discomfort and changes in taste are the most common. Some people have reported dizziness, headache, fatigue, or nausea, especially at higher doses.
Is this product proven to work?
The ingredients — caprylic and lauric acid — don't have strong evidence for the uses they're sometimes promoted for, like epilepsy, herpes, or colds. MCT oil is mainly used as a nutritional fat in low-carb and ketogenic diets.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if MCT Oil Unflavored is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

MCT Oil Unflavored label
Go deeper

The Full Monographs Behind MCT Oil Unflavored’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Caprylic Acid

Interacts with 262 drugs

Caprylic acid is a medium-chain fatty acid found in coconut oil and palm kernel oil that is popularly used for yeast overgrowth and gut health. While laboratory studies show it has antimicro...

Read the full Caprylic Acid monograph → Herb & supplement monograph

Lauric Acid

Lauric acid is a medium-to-long-chain saturated fatty acid found in coconut oil, palm kernel oil, and breast milk. It is studied for possible antimicrobial and skin benefits, but solid human...

Read the full Lauric Acid monograph →
Sources

Sources & How We Checked

MCT Oil Unflavored's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 13 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Caprylic Acid 5 references
  1. Massolini G, Aubry AF, McGann A, Wainer IW. Determination of the magnitude and enantioselectivity of ligand binding to rat and rabbit serum albumins using immobilized-protein high performance liquid chromatography stationary phases. Biochem Pharmacol 1993 PubMed
  2. Kristev A, Mitkov D, Lukanov Y, Chapkynov P. The effect of octanoic fatty acid on the cardiovascular system of the guinea pig. Cor Vasa 1989;31(4):321-7.
  3. Hayball PF, Holman JW, Nation RL. Influence of octanoic acid on the reversible protein binding of ketorolac enantiomers to human serum albumin (HSA): comparative liquid chromatographic studies using a HSA chiral stationary phase. J Chromatogr B Biomed App PubMed
  4. Noctor TA, Wainer IW, Hage DS. Allosteric and competitive displacement of drugs from human serum albumin by octanoic acid, as revealed by high-performance liquid affinity chromatography, on a human serum albumin-based stationary phase. J Chromatogr 1992;5 PubMed
  5. Voller B, Lines E, McCrossin G, et al. Dose-escalation study of octanoic acid in patients with essential tremor. J Clin Invest. 2016;126(4):1451-7. PubMed

See these in context on the Caprylic Acid monograph →

Lauric Acid 8 references
  1. Brown KE, Leong K, Huang CH, et al. Gelatin/chondroitin 6-sulfate microspheres for the delivery of therapeutic proteins to the joint. Arthritis Rheum 1998;41:2185-95. PubMed
  2. de Roos N, Schouten E, Katan M. Consumption of a solid fat rich in lauric acid results in a more favorable serum lipid profile in healthy men and women than consumption of a solid fat rich in trans-fatty acids. J Nutr 2001;131;242-5. PubMed
  3. Temme EH, Mensink RP, Hornstra G. Comparison of the effects of diets enriched in lauric, palmitic, or oleic acids on serum lipids and lipoproteins in healthy women and men. Am J Clin Nutr 1996;63:897-903. PubMed
  4. Denke MA, Grundy SM. Comparison of effects of lauric acid and palmitic acid on plasma lipids and lipoproteins. Am J Clin Nutr 1992;56:895-8. PubMed
  5. Tholstrup T, Marckmann P, Vessby B, Sandstrom B. Effect of fats high in individual saturated fatty acids on plasma lipoprotein[a] levels in young healthy men. J Lipid Res 1995;36;1447-52. DOI
  6. Francois CA, Connor SL, Wander RC, Connor WE. Acute effects of dietary fatty acids on the fatty acids of human milk. Am J Clin Nutr 1998;67:301-8. PubMed
  7. Tholstrup T, Marckmann P, Jespersen J, Sandstrom B. Fat high in stearic acid favorably affects blood lipids and factor VII coagulant activity in comparison with fats high in palmitic acid or high in myristic and lauric acids. Am J Clin Nutr 1994;59:371-7. PubMed
  8. McVeay C, Fitzgerald PCE, Ullrich SS, Steinert RE, Horowitz M, Feinle-Bisset C. Effects of intraduodenal administration of lauric acid and L-tryptophan, alone and combined, on gut hormones, pyloric pressures, and energy intake in healthy men. Am J Clin Nu PubMed

See these in context on the Lauric Acid monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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