Drug & supplement interaction

Methoxylated Flavones + Liotrix

Liotrix brand names: Euthroid 3, Euthroid 1/2, Euthroid 1.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Methoxylated Flavones and Liotrix in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Liotrix states a food rule worth keeping to.

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Interaction report

Methoxylated Flavones and Liotrix

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Liotrix and Methoxylated Flavones in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Methoxylated Flavones safety at a glance

Methoxylated Flavo... overall Use caution Generally found in foods, but concentrated supplement safety in humans is not well studied.
Pregnancy Likely Safe When consumed orally in amounts typically found in foods. There is insufficient reliable information available about the safety of methoxylated flavones when us... Read the full pregnancy detail
Breastfeeding Likely Safe When consumed orally in amounts typically found in foods. There is insufficient reliable information available about the safety of methoxylated flavones when us... Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Liotrix and Methoxylated Flavones? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Liotrix

Interactions in our licensed database are recorded against drug classes, not just single drug names. Liotrix is filed under 2 classifications — thyroid hormone, oral drugs. Methoxylated Flavones has documented interactions with 5 drug classes — the most serious being anticoagulant/antiplatelet drugs (moderate), cytochrome p450 1a2 (cyp1a2) substrates (moderate) and cytochrome p450 3a4 (cyp3a4) substrates (moderate) — and none of Liotrix’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Methoxylated Flavones Does Interact With Other Medications

Methoxylated Flavones has 892 moderate known drug interactions in our database — Liotrix isn’t one of them. If you take anything else, check it against the full list below.

Moderate 892 No known interaction 1,938 (incl. Liotrix)
Taking anything else?

Check Another of Your Medications Against Methoxylated Flavones

Covers the 2,830 medications we’ve checked against Methoxylated Flavones. Pick one to open its full report.

What to actually watch for

What Liotrix’s Own FDA Label Lists

This is not an interaction — none of it involves Methoxylated Flavones. These are the most notable effects listed in the ADVERSE REACTIONS section of Liotrix’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 10 of them are worth acting on rather than waiting out — marked below.

  • A change in thyroid levels Worth acting on
  • Bone thinning Worth acting on
  • Muscle weakness Worth acting on
  • A heart attack Worth acting on
  • Heart failure Worth acting on
  • Wheezing Worth acting on
  • Seizures Worth acting on
  • Chest pain Worth acting on
  • Shortness of breath Worth acting on
  • A severe allergic reaction Worth acting on

Showing the 10 most notable of 32 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Liotrix. Read the label on DailyMed › Methoxylated Flavones’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Methoxylated Flavones side to compare — that is a limit of the record, not a statement that Methoxylated Flavones has no side effects.

Special populations

Methoxylated Flavones in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Safe

When consumed orally in amounts typically found in foods. There is insufficient reliable information available about the safety of methoxylated flavones when used in amounts greater than those found in foods during pregnancy or breast-feeding; avoid using in amounts greater than those typically found in foods.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

How to take them

Some Liotrix Products Have a Food Rule — Methoxylated Flavones Should Not Break It

At least one FDA label for a product containing Liotrix says to take it on an empty stomach. Most supplements — Methoxylated Flavones included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Liotrix on its own and move Methoxylated Flavones to a meal later in the day.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Liotrix products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Everything else you take

See Every Supplement That Interacts With Liotrix

This page covers Methoxylated Flavones only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Liotrix page lists 38 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Tiratricol (major), Acetyl-l-carnitine (moderate), Alpha-lipoic Acid (moderate) and Ascophyllum Nodosum (moderate).

By severity: 2 major · 26 moderate · 10 minor.

From our pharmacist’s overview on the Liotrix page

“Liotrix (Euthroid) combines both thyroid hormones, and since steady hormone levels are the entire point of treatment, this list deserves a slow, serious read. Most entries fall into two camps: twenty-one ingredients act on the hormone itself, some boosting it and others blunting it, while another seventeen change how well the dose is a…”

Reviewed by 2 · Jul 18, 2026

Open the Liotrix interaction page

How much people look this up

Where Methoxylated Flavones and Liotrix Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Methoxylated Flavones
Steady interest

#1,055 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Liotrix
Steady interest

#1,954 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Methoxylated Flavones reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Methoxylated Flavones and Liotrix records this page draws on were last updated June 22, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Methoxylated Flavones

What is Methoxylated Flavones?

  • Antioxidant support
  • Circulation and blood vessel health
  • Anti-inflammatory support
  • Skin and aging support
  • General 'metabolism' or wellness blends

Methoxylated flavones (often called polymethoxyflavones) are a group of plant compounds, found mainly in citrus peel, that include substances like nobiletin and tangeretin. Lab and animal studies suggest possible antioxidant and anti-inflammatory effects, but solid human research is very limited, so their real-world benefits are unproven. Talk with a pharmacist or doctor before using them, especially if you take medicines or are pregnant or breastfeeding.

Plant-derived flavonoids (often from citrus peel and other plants) · Capsules, tablets, powders, and combination flavonoid supplements

An interaction check asks whether these two react with each other — it does not ask whether Methoxylated Flavones is a good idea for someone in your situation. Here is what our Methoxylated Flavones record says about it on its own.

Methoxylated Flavones: dosing

There is no established standard dose for methoxylated flavones. Products vary widely in how much they contain and what other ingredients they are combined with.If you choose to use one, follow the directions on the product label and do not exceed the recommended amount.

From our Methoxylated Flavones monograph — the full record covers uses, side effects and every documented interaction.

Read the full Methoxylated Flavones monograph & all interactions
Medication

About Liotrix

What Is Liotrix Used For?

Brand names: Euthroid 3, Euthroid 1/2, Euthroid 1

  • Liotrix is used to treat hypothyroidism (a condition that results when the thyroid gland does not produce enough thyroid hormone). Symptoms of hypothyroidism include lack of energy, depression, constipation, weight gain, hair loss, dry skin, dry coarse hair, muscle cramps, decreased concentration, aches and pains, swelling of the legs, and increased sensitivity to cold. When taken correctly, liotrix can reverse these symptoms. Liotrix is also used to treat goiter (enlarged thyroid gland). This medication is also used to test for hyperthyroidism (a condition where the thyroid gland produces too much thyroid hormone). Liotrix is in a class of medications called thyroid agents. It works by supplying the thyroid hormones normally produced by the body.

See full Liotrix drug information
Keep checking

Other Drugs & Methoxylated Flavones

Browse every other medication we’ve checked against Methoxylated Flavones — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
892Moderate
0Minor
1,937No known interaction
892 Moderate 1,937 No interaction
Moderate

892 interactions

Showing 60 of 892 moderate interactions — see all 892 on the Methoxylated Flavones page.

No interaction 1,937 drugs checked — show the list

We also checked Methoxylated Flavones against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 1,937 medications checked with no known interaction — see the full Methoxylated Flavones list.

See the full Methoxylated Flavones interactions page
See every supplement checked against Liotrix, ranked by severity
Evidence & sources

Methoxylated Flavones References

The 7 references that drive our Methoxylated Flavones monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Middleton E, Kandaswami C, Theoharides TC. The effects of plant flavonoids on mammalian cells: implications for inflammation, heart disease, and cancer. Pharmacol Rev 2000;52:673-751. DOI
  2. Robbins RC. Effect of methoxylated flavones on erythrocyte aggregation and sedimentation in blood of normal subjects: Evidence of a dietary role for flavonoids. Internat J Vit Nutr Res 1973;43:494-503.
  3. Robbins RC. In vitro effects of penta-, hexa-, and hepta-methoxylated flavones on aggregation of cells in blood from hospitalized patients. J Clin Pharmacol 1973;13:271-5. PubMed
  4. Takanaga H, Ohnishi A, Yamada S, et al. Polymethoxylated flavones in orange juice are inhibitors of P-glycoprotein but not cytochrome P450 3A4. J Pharmacol Exp Ther 2000;293:230-6. DOI
  5. Feng SL, Yuan ZW, Yao XJ, et al. Tangeretin, a citrus pentamethoxyflavone, antagonizes ABCB1-mediated multidrug resistance by inhibiting its transport function. Pharmacol Res 2016;110:193-204. PubMed
  6. Li Y, Ning J, Wang Y, et al. Drug interaction study of flavonoids toward CYP3A4 and their quantitative structure activity relationship (QSAR) analysis for predicting potential effects. Toxicol Lett. 2018 Sep 15;294:27-36. PubMed
  7. Bajraktari-Sylejmani G, Weiss J. Potential risk of food-drug interactions: Citrus polymethoxyflavones and flavanones as inhibitors of the organic anion transporting polypeptides (OATP) 1B1, 1B3, and 2B1. Eur J Drug Metab Pharmacokinet. 2020;45(6):809-815. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Methoxylated Flavones and Liotrix Together: Common Questions

Is it safe to take Methoxylated Flavones with Liotrix?
We do not list a known interaction between Methoxylated Flavones and Liotrix. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Should I take Methoxylated Flavones and Liotrix at the same time of day?
At least one FDA label for a product containing Liotrix says to take it on an empty stomach, and supplements are usually taken with a meal — so taking them together at breakfast is the easy mistake. Where that applies, keep Liotrix on its own and move Methoxylated Flavones to a meal later in the day. Food instructions belong to the product rather than the ingredient, so check the directions on your own box. This is about absorption, not an interaction.
How was the Methoxylated Flavones and Liotrix combination checked?
Interactions in our licensed database are recorded against drug classes. Liotrix is filed under 2 classifications, and Methoxylated Flavones has documented interactions with 5 drug classes — none of Liotrix's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Methoxylated Flavones interact with any other medications?
Yes. Methoxylated Flavones has 892 documented drug interactions in our database — Liotrix is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Liotrix interact with any supplements?
Yes. Liotrix has documented interactions with 38 supplements in our database — Methoxylated Flavones is not one of them. The Liotrix interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Methoxylated Flavones monograph Uses, safety profile, and every drug interaction in one place Liotrix drug information The full plain-English guide to this medication Liotrix supplement interactions Every supplement checked against Liotrix, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 7 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Liotrix and Methoxylated Flavones?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.