Does MCT Oil Interact With Amlodipine or Metoprolol?

Someone taking amlodipine 10 mg and metoprolol 25 mg daily wants to know whether adding an MCT oil supplement could interact with either of their blood pressure medications.

3 min read Updated Aug 2026 Read by 122 people
Does MCT Oil Interact With Amlodipine or Metoprolol?
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Mick asked

I take amlodipine 10 mg and metoprolol 25 mg daily. Will taking MCT oil interact with my medications?

Aug 30, 2026
The quick answer
  • MCT oil has no known clinically significant interactions with amlodipine or metoprolol, so it's generally safe to use alongside these medications.
  • Take your metoprolol consistently at the same time each day with or without food to maintain steady medication levels, and start with a small amount of MCT oil to avoid stomach upset.
A quick summary of Dr. Brian Staiger, PharmD's full answer below, condensed by AI from that answer only (not from any outside source). The pharmacist's answer is the source of record.
Medications in this answer — tap to explore

Hello, and thanks for trusting us with your question!

I have good news for you here...MCT oil doesn't have any known, clinically significant interactions with amlodipine or metoprolol, so from an interaction standpoint, adding it to your routine is generally considered fine.

What is MCT Oil?

MCT oil is made up of medium-chain triglycerides, most often caprylic acid (C8) and capric acid (C10), which are typically derived from coconut or palm kernel oil. It's popular for energy, ketogenic diets, and general wellness.

The key point for your question is that MCT oil is essentially a concentrated food fat rather than a pharmacologically active supplement. Unlike long-chain fats, medium-chain triglycerides are absorbed directly into the bloodstream through the portal vein and are rapidly used for energy, and they aren't known to meaningfully inhibit or speed up the liver enzymes that break down your medications.

Timing MCT Oil Around Your Metoprolol

One point worth mentioning is that food can influence how metoprolol is absorbed.

Immediate-release metoprolol (metoprolol tartrate) is generally recommended to be taken consistently, either always with meals or always without, because food can increase the amount of drug that reaches the bloodstream.

A serving of MCT oil taken around the same time isn't expected to cause any problem, but the good habit here is consistency: take your metoprolol the same way at the same time each day so your levels stay steady.

Amlodipine, for its part, can be taken with or without food too, so MCT oil doesn't create any timing concern there. If you happen to be on the extended-release form of metoprolol (metoprolol succinate), food matters even less, but the consistency advice still applies.

What to Expect When Starting MCT Oil

The most common issues with MCT oil have nothing to do with drug interactions and everything to do with your stomach.

Taken in larger amounts, especially on an empty stomach, it can cause cramping, nausea, or loose stools. Starting with a small amount (a teaspoon or so daily) and gradually working up over a week or two, ideally taken with food, tends to prevent most of that.

It's also worth remembering that MCT oil is calorie-dense, roughly 115 to 120 calories per tablespoon, which can add up if weight management is one of your health goals alongside your blood pressure treatment.

Final Words

Overall, MCT oil is considered a reasonable addition alongside amlodipine and metoprolol, with no known interactions between them. Start low to keep your stomach happy, keep your metoprolol routine consistent, and add MCT oil to your medication list so your pharmacist and doctor have the full picture at your next visit. 

Thanks for using HelloPharmacist!

References & sources
  1. The Effects of Medium-Chain Triglyceride Oil Supplementation on Endurance Performance and Substrate Utilization in Healthy Populations: A Systematic Review — PubMed
  2. Triglycerides of medium-chain fatty acids: a concise review — PubMed
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Dr. Brian Staiger, PharmD
About the pharmacist

Dr. Brian Staiger, PharmD

Clinical Pharmacy

Doctor of Pharmacy, board certified clinical pharmacist (BCPS), American Herbalist Guild, Medication Therapy Management certified

Brian Staiger, PharmD, BCPS, is a licensed pharmacist with more than 13 years of experience across retail pharmacy, clinical pharmacy, medication safety, pharmacy program development, and healthcare administration. He is the founder of HelloPharmacist.com, where he helps patients...

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