Medication interaction hub

What Supplements Interact with Formoterol?

Formoterol brand names: Foradil Aerolizer, Atimos Modulite, Oxis Turbohaler, Perforomist, Foradil Certihaler. Every interaction below applies to the brands too.

103 Interactions 84 Moderate 19 Minor
Curated & coded by · Clinical Pharmacist · Updated September 24, 2026

Drug–supplement interaction data sourced from Natural Medicines Pro, the licensed clinical database from TRC Healthcare / Therapeutic Research, with additional analysis by the HelloPharmacist Pharmacist Team. Our sources · Editorial policy

What is this page for?

One answer, for one medication: what supplements and herbal products interact with Formoterol? Every vitamin, herb, and supplement ingredient we’ve checked against it is on this page, ranked by severity, each linking to the full report for that exact pair.

This page covers supplement interactions only — to check Formoterol against your other medications, use the drug–drug interaction checker. Educational information from our licensed clinical databases, not medical advice. Our editorial policy

HelloPharmacist Bottom Line
Our Pharmacist Explains
What is this? The interaction data in the HelloPharmacist supplement database is licensed from Natural Medicines Pro by TRC Healthcare (Therapeutic Research). HelloPharmacist pharmacists often add our own analysis and context on top of that licensed data — such as this Bottom Line summary and the notes on individual interaction pages — and any such commentary is noted as ours.

Formoterol (Foradil, Perforomist) is the long-acting half of many asthma and COPD inhalers, keeping airways open for hours, and its supplement list is calmer than its length suggests. None of the 103 ingredients on file is rated major. Nearly all of them involve liver enzymes, herbs that slow or speed the pathways (CYP2D6, 2C9, and 2C19) clearing the drug, which can nudge its levels up or its effectiveness down. Everyday items like CBD and melatonin sit in the slowing group, while ginkgo may push the other way and speed clearance.

This is a watch-it list, not an avoid-it list. Eighty-four entries are moderate and 19 minor, and much of the evidence is lab or animal work rather than documented human harm. Notice whether the inhaler feels different after you start a supplement. More shakiness or a racing heartbeat can hint at higher drug levels; creeping breathlessness suggests it is clearing too fast.

— , Clinical Pharmacist · July 18, 2026

Moderate 84 Minor 19 No known interaction 1,349

This box checks one ingredient at a time (like turmeric or magnesium). Taking a supplement product with a whole label of ingredients? Search the product instead — we check every ingredient on it ↓

Most Viewed Ingredient Interactions

Formoterol: Top Interactions at a Glance

The Formoterol supplement & herbal interactions people checked most in the last 24 hours, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 103 interacting ingredients — plus 1,349 more checked with no known interaction. See the complete ranked list.

Start here

The Most-Checked Formoterol Combinations Today

The Formoterol + supplement pages people viewed most in the last 24 hours (resets at midnight). Open any card for the full report.

Moderate Likelihood Possible Eleuthero + Formoteroli

Theoretically, eleuthero might increase levels of drugs metabolized by CYP2C9.

Read the full interaction Moderate Likelihood Probable Melatonin + Formoteroli

Theoretically, melatonin might increase levels of drugs metabolized by CYP2C19.

Read the full interaction Moderate Likelihood Possible Bulbine Natalensis + Formoteroli

Theoretically, Bulbine natalensis stem might reduce the levels and clinical effects of CYP2C9 substrates.

Read the full interaction Minor Likelihood Possible Bitter Orange + Formoteroli

Theoretically, bitter orange might increase levels of drug metabolized by CYP2D6.

Read the full interaction Moderate Likelihood Possible German Chamomile + Formoteroli

Theoretically, German chamomile might inhibit CYP2D6 and increase levels of drugs metabolized by these enzymes.

Read the full interaction Moderate Likelihood Possible Cannabis + Formoteroli

Cannabis may increase levels of drugs metabolized by CYP2C19.

Read the full interaction
The complete list

Every Supplement Checked Against Formoterol

All 1,452 ingredients in our database, ranked by severity — 103 with a Formoterol interaction on file and 1,349 with none found. Filter by severity or search any ingredient; hover the for what each ingredient is.

Looking for an interaction with a specific supplement product? Search products instead ↓

Straight answers

Can You Take It With Formoterol?

One-line answers, one card per combination — scroll through today’s 20 and tap any card for the full report. A different set rotates in daily until every combination has had its turn.

Can you take Eleuthero with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, eleuthero might increase levels of drugs metabolized by CYP2C9.

Full Eleuthero + Formoterol answer

Can you take Melatonin with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, melatonin might increase levels of drugs metabolized by CYP2C19.

Full Melatonin + Formoterol answer

Can you take Bulbine Natalensis with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, Bulbine natalensis stem might reduce the levels and clinical effects of CYP2C9 substrates.

Full Bulbine Natalensis + Formoterol answer

Can you take Bitter Orange with Formoterol?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, bitter orange might increase levels of drug metabolized by CYP2D6.

Full Bitter Orange + Formoterol answer

Can you take German Chamomile with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, German chamomile might inhibit CYP2D6 and increase levels of drugs metabolized by these enzymes.

Full German Chamomile + Formoterol answer

Can you take Sesame with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, sesame might increase the levels and clinical effects of CYP2C9 substrates.

Full Sesame + Formoterol answer

Can you take Shiitake Mushroom with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.

Full Shiitake Mushroom + Formoterol answer

Can you take St. John's Wort with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. St.

Full St. John's Wort + Formoterol answer

Can you take Terminalia with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, use of Terminalia arjuna may increase the levels and clinical effects of CYP2D6 substrates.

Full Terminalia + Formoterol answer

Can you take Tinospora Cordifolia with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, Tinospora cordifolia might increase levels of drugs metabolized by CYP2D6.

Full Tinospora Cordifolia + Formoterol answer

Can you take Tree Turmeric with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, tree turmeric might increase the levels and clinical effects of drugs metabolized by CYP2D6.

Full Tree Turmeric + Formoterol answer

Can you take Uva Ursi with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, uva ursi may decrease the metabolism of CYP2C19 substrates.

Full Uva Ursi + Formoterol answer

Can you take Vinpocetine with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, vinpocetine might increase levels of drugs metabolized by CYP2C9.

Full Vinpocetine + Formoterol answer

Can you take White Pepper with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. In vitro evidence suggests that some constituents of white pepper inhibit cytochrome P450 2D6 (CYP2D6).

Full White Pepper + Formoterol answer

Can you take Yohimbe with Formoterol?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, yohimbe might increase the levels and adverse effects of CYP2D6 substrates.

Full Yohimbe + Formoterol answer

Can you take 1,3-dmba with Formoterol?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, 1,3-DMBA might modestly increase the levels of CYP2D6 substrates.

Full 1,3-dmba + Formoterol answer

Can you take Eurycoma Longifolia with Formoterol?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, Eurycoma longifolia might increase levels of CYP2C19 substrates.

Full Eurycoma Longifolia + Formoterol answer

Can you take Evening Primrose with Formoterol?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, evening primrose may increase the levels and clinical effects of CYP2C9 substrates.

Full Evening Primrose + Formoterol answer

Can you take Fucus Vesiculosus with Formoterol?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, concomitant use of Fucus vesiculosus with CYP2D6 substrates might alter the effects of these substrates.

Full Fucus Vesiculosus + Formoterol answer

Can you take Genistein Combined Polysaccharide with Formoterol?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Some evidence suggests that genistein can alter the pharmacokinetics of CYP2C9 substrates and should be used cautiously with them.

Full Genistein Combined Polysaccharide + Formoterol answer
Read the list like a pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each entry links to a full report with the clinical detail, likelihood, evidence level, and citations for that exact combination.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

How Does Our Interaction Checker Work?

Behind every verdict on this page is a category system. Our source database doesn’t document supplement interactions drug-by-drug — it documents them against groups of medications that behave the same way (for example, “drugs processed by the CYP3A4 liver enzyme” or “blood-thinning medications”).

So the check works in three steps: (1) Formoterol is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Formoterol, and (3) each ingredient keeps its own severity, likelihood, and evidence grades from the underlying record. That’s why one supplement can carry several records for one drug — it may interact through more than one category.

Formoterol sits in 3 interaction categories. Open any one to see what the group means:

Cytochrome P450 2C9 (Cyp2C9) Substrates 64 ingredients

A drug-metabolism group: these medications are processed by the named liver enzyme (a cytochrome P450). Supplements that speed this enzyme up or slow it down can lower or raise the medication's levels in your body.

64 of the supplement ingredients on this page reach Formoterol through this category.

Cytochrome P450 2D6 (Cyp2D6) Substrates 60 ingredients

A drug-metabolism group: these medications are processed by the named liver enzyme (a cytochrome P450). Supplements that speed this enzyme up or slow it down can lower or raise the medication's levels in your body.

60 of the supplement ingredients on this page reach Formoterol through this category.

Cytochrome P450 2C19 (Cyp2C19) Substrates 33 ingredients

A drug-metabolism group: these medications are processed by the named liver enzyme (a cytochrome P450). Supplements that speed this enzyme up or slow it down can lower or raise the medication's levels in your body.

33 of the supplement ingredients on this page reach Formoterol through this category.

About Formoterol

Formoterol is a long-acting bronchodilator inhaled through a nebulizer to help keep airways open in adults with chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema.

Generic name: Formoterol  ·  Brand names: Foradil Aerolizer, Atimos Modulite, Oxis Turbohaler, Perforomist, Foradil Certihaler.

See the full Formoterol Oral Inhalation drug information
Check a real product

Take a Supplement Product? Check the Whole Bottle Against Formoterol

Most supplements are combination products — and the interaction may come from an ingredient you didn’t buy it for. Search any product below (or scan its label) and we’ll check every ingredient on it against Formoterol.

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Pharmacist Counseling Corner

Formoterol & Supplements: Common Questions

What supplements interact with Formoterol?
In our interaction database, 103 supplement and herbal ingredients have an interaction with Formoterol on file — 0 rated major, 84 moderate, and 19 minor. That number sounds scarier than it is: severity matters far more than the count, which is why the list on this page is ranked instead of alphabetical. Start at the top. The highest-ranked right now: Ayahuasca, Cannabidiol (cbd), Ginkgo.
Which Formoterol supplement interactions are the most serious?
None of the Formoterol supplement interactions on file are currently rated major. The most significant are the 84 moderate-rated ones — combinations that may need monitoring, a dose adjustment, or separated timing. Still worth a quick look through the ranked list for anything you take daily. Jump to the ranked list.
Can I take vitamins or supplements while on Formoterol?
That depends entirely on which supplement. The honest answer for Formoterol is in the ranked list above — and if what you take is a combination product with a dozen ingredients, don't check them one by one: photograph the label with our scanner and we'll check the whole thing at once. Try the label scanner or the interaction checker.
Do brands like Foradil Aerolizer have the same supplement interactions as Formoterol?
Yes — Foradil Aerolizer, Atimos Modulite, Oxis Turbohaler, Perforomist, Foradil Certihaler all contain Formoterol, so everything on this page applies to them equally. Interactions belong to the active drug, never to the brand on the box; the same is true of generics.
Where do these interaction ratings come from?
Every rating comes from the Natural Medicines database — the same evidence-graded reference pharmacists and hospitals use — and each interaction carries three separate grades: severity (how bad it can be), likelihood (how well it's documented in studies and case reports), and an evidence level. Our pharmacists review the content; we never let an AI decide an interaction. See how to read the ratings and our editorial policy.
What about Formoterol and my other medications?
This page covers Formoterol against supplements and herbal ingredients. Checking Formoterol against your other prescription or OTC medications is a different tool — our drug interaction checker covers that side. Head to the drug–drug interaction checker, or read the full Formoterol Oral Inhalation drug information.

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

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Sourcing

Where This Data Comes From — and Why You Can Trust It

🧪 Licensed clinical database

Every interaction verdict on this page comes from Natural Medicines Pro (TRC Healthcare / Therapeutic Research) — the same evidence-graded reference used by pharmacists and hospitals. We license this data directly; we do not scrape it, and no AI invents an interaction.

🧑‍⚕️ Pharmacist review

This page is curated and coded by , Clinical Pharmacist, with additional analysis by the HelloPharmacist Pharmacist Team. Editorial commentary is ours; the licensed interaction records are shown as sourced.

🔄 Kept current

Our interaction database refreshes on a weekly cycle, and this page re-checks the live database every time it’s rebuilt — what you see reflects the database as of September 24, 2026.

🔍 Full transparency

How every dataset on this site is sourced, licensed, and updated is documented publicly: our data sources · editorial policy · how we use AI.

Educational information, not medical advice. An interaction being on file does not mean it will happen to you — and absence of one is not proof of safety. Never start or stop a medication or supplement without talking to your pharmacist or doctor.