Drug & supplement interaction

Myrcia + Fomoterol

Fomoterol brand name: Foradil.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated June 2026 · Pair last verified Sep 13, 2026

The bottom line No known interaction

We found no known interaction between Myrcia and Fomoterol 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.

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Interaction report

Myrcia and Fomoterol

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 Fomoterol and Myrcia 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.

Myrcia safety at a glance

Myrcia overall Not established Human safety data are very limited, so caution is advised.

Pregnancy Avoid There is not enough safety information, so avoid use during pregnancy.

Breastfeeding Avoid Safety while breastfeeding is unknown, so it is best avoided.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Fomoterol and Myrcia? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Fomoterol

Interactions in our licensed database are recorded against drug classes, not just single drug names. Fomoterol is filed under 3 classifications — cytochrome p450 2c19 (cyp2c19) substrates, cytochrome p450 2c9 (cyp2c9) substrates, cytochrome p450 2d6 (cyp2d6) substrates. Myrcia has documented interactions with 1 drug class — the most serious being levothyroxine (synthroid, others) (moderate) — and none of Fomoterol’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

Myrcia Does Interact With Other Medications

Myrcia has 3 moderate known drug interactions in our database — Fomoterol isn’t one of them. If you take anything else, check it against the full list below.

Moderate 3 No known interaction 2,827 (incl. Fomoterol)

Taking anything else?

Check Another of Your Medications Against Myrcia

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

What to actually watch for

What Fomoterol’s Own FDA Label Lists

This is not an interaction — none of it involves Myrcia. These are the most notable effects listed in the ADVERSE REACTIONS section of Fomoterol’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. 7 of them are worth acting on rather than waiting out — marked below.

Low potassium Worth acting on
High blood sugar Worth acting on
Wheezing Worth acting on
Chest pain Worth acting on
Raised blood pressure Worth acting on
A severe allergic reaction Worth acting on
Hives Worth acting on
Tremor or shakiness
Dry mouth
A fast or pounding heartbeat

Showing the 10 most notable of 22 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 Fomoterol. Read the label on DailyMed › Myrcia’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Myrcia side to compare — that is a limit of the record, not a statement that Myrcia has no side effects.

Everything else you take

See Every Supplement That Interacts With Fomoterol

This page covers Myrcia only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Fomoterol page lists 103 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: 1,3-dmaa (moderate), Acacia Rigidula (moderate), Active Hexose Correlated Compound (ahcc) (moderate), Adrafinil (moderate) and African Wild Potato (moderate).

By severity: 84 moderate · 19 minor.

From our pharmacist’s overview on the Fomoterol page

“Fomoterol (Foradil) keeps airways open in asthma and COPD, and the supplement picture here is calmer than a 103-item list suggests. None of these interactions is rated major; 84 are moderate and 19 minor.”

Reviewed by 2 · Jul 18, 2026

Open the Fomoterol interaction page

How much people look this up

Where Myrcia and Fomoterol 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 Myrcia

Steady interest

#1,348 of 1,452 supplements looked up here in the last 7 days

29 days ago today

Medication Fomoterol

Steady interest

#2,042 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 Myrcia reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Myrcia and Fomoterol 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 Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Myrcia

What is Myrcia?

Blood sugar support
Digestive upset and diarrhea
Mild urinary complaints
Astringent for the gut
Traditional 'pedra-hume-caa' folk remedy

Myrcia is a group of tropical shrubs and trees in the myrtle family, used in South American folk medicine—often as a tea—mainly for blood sugar and digestive complaints. Human evidence is very limited, so it should not replace proven treatments. Talk with your pharmacist or doctor before using it, especially if you have diabetes or take other medicines.

Myrtaceae · Leaves (and sometimes bark) · Tea, dried leaf, capsules, liquid extracts

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

Myrcia: dosing

There is no established standardized dose for Myrcia. Traditional use is usually as a tea made from the dried leaves, but amounts vary widely and are not backed by clinical research.If you choose to try a commercial product, follow the directions on the label and do not exceed them.

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

Read the full Myrcia monograph & all interactions

Medication

About Formoterol Oral Inhalation

What Is Formoterol Oral Inhalation Used For?

Brand name: Foradil

Formoterol fumarate inhalation solution is used for the long-term maintenance treatment of airway narrowing (bronchoconstriction) in adults with COPD, including chronic bronchitis and emphysema. It is taken twice daily — morning and evening — as a regular, ongoing treatment.

Important limits: This medication is not for relieving sudden COPD flare-ups or breathlessness in the moment, and it is not approved to treat asthma. A separate short-acting inhaler should always be on hand for sudden symptoms.

See full Formoterol Oral Inhalation drug information

Keep checking

Other Drugs & Myrcia

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

0Major

3Moderate

0Minor

2,826No known interaction

3 Moderate 2,826 No interaction

Moderate

3 interactions

No interaction 2,826 drugs checked — show the list

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

Showing the 60 most looked-up of 2,826 medications checked with no known interaction — see the full Myrcia list.

See the full Myrcia interactions page

See every supplement checked against Fomoterol, ranked by severity

Evidence & sources

Myrcia References

The 2 references that drive our Myrcia 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.

Russo EM, Reichelt AA, De Sa JR, et al. Clinical trial of Myrcia uniflora and Bauhinia forficata leaf extracts in normal and diabetic patients. Braz J Med Biol Res 1990;23(1):11-20.
Ferreira AC, Neto JC, da Silva AC, et al. Inhibition of thyroid peroxidase by Myrcia uniflora flavonoids. Chem Res Toxicol 2006;19(3):351-55.

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 Myrcia and Fomoterol Together: Common Questions

Is it safe to take Myrcia with Fomoterol?

We do not list a known interaction between Myrcia and Fomoterol. 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.

How was the Myrcia and Fomoterol combination checked?

Interactions in our licensed database are recorded against drug classes. Fomoterol is filed under 3 classifications, and Myrcia has documented interactions with 1 drug class — none of Fomoterol'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 Myrcia interact with any other medications?

Yes. Myrcia has 3 documented drug interactions in our database — Fomoterol 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 Fomoterol interact with any supplements?

Yes. Fomoterol has documented interactions with 103 supplements in our database — Myrcia is not one of them. The Fomoterol 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

Myrcia monograph Uses, safety profile, and every drug interaction in one place Formoterol Oral Inhalation drug information The full plain-English guide to this medication Fomoterol supplement interactions Every supplement checked against Fomoterol, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Fomoterol and Myrcia?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.