Drug & supplement interaction

American Mistletoe + Tobramycin ophthalmic

Tobramycin ophthalmic brand name: Tobrex.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between American Mistletoe and Tobramycin ophthalmic 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

American Mistletoe and Tobramycin ophthalmic

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 Tobramycin ophthalmic and American Mistletoe 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.

American Mistletoe safety at a glance

American Mistletoe overall Avoid American mistletoe contains toxic compounds and is not recommended for medicinal use.
Pregnancy Likely Unsafe When used orally. American mistletoe is considered an abortifacient. Read the full pregnancy detail
Breastfeeding Likely Unsafe When used orally; avoid using. 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 Tobramycin ophthalmic and American Mistletoe? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
Keep it in perspective

American Mistletoe Does Interact With Other Medications

American Mistletoe has 190 major, known drug interactions in our database — Tobramycin ophthalmic isn’t one of them. If you take anything else, check it against the full list below.

Major 190 No known interaction 2,640 (incl. Tobramycin ophthalmic)
Taking anything else?

Check Another of Your Medications Against American Mistletoe

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

What to actually watch for

What American Mistletoe Itself Has Been Linked To

This is not an interaction — nothing below involves Tobramycin ophthalmic. It is the side-effect record for American Mistletoe on its own, from the licensed Natural Medicines monograph. If something new turns up after you add American Mistletoe, this list is the first place to look. 3 entries are worth acting on rather than waiting out — marked below.

  • Dehydration Worth acting on Additional detail

    “Orally, American mistletoe can cause acute gastroenteritis. Consuming large doses of American mistletoe may cause nausea, vomiting, and diarrhea. Diarrhea and vomiting from ingestion of American mistletoe can lead to dehydration, hypovolemic shock, and cardiovascular collapse (6).”

    American Mistletoe · Natural Medicines adverse-effect record, reported in diarrhea.

    1 source cited
    1. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  • A slow heartbeat / Raised blood pressure Worth acting on Additional detail

    “Evidence on adverse effects related to American mistletoe is limited to retrospective case reviews from poison control centers. Most reports suggest that American mistletoe may be relatively well tolerated at lower doses.”

    American Mistletoe · Natural Medicines adverse-effect record, reported in cardiac arrest.

    “Orally, large doses of American mistletoe may cause bradycardia, hypertension, and cardiac arrest (6,19695).”

    American Mistletoe · Natural Medicines adverse-effect record, reported in cardiac arrest.

    2 sources cited
    1. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
    2. 19695. Moore HW. Mistletoe poisoning: a review of the available literature, and the report of a case of probable fatal poisoning. J S Carolina Med Assoc 1963;59(8):269-271.
  • Hallucinations / Confusion Worth acting on Additional detail

    “Orally, large doses of American mistletoe may cause delirium and hallucinations (6).”

    American Mistletoe · Natural Medicines adverse-effect record, reported in delirium.

    1 source cited
    1. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  • Diarrhea / Vomiting / Nausea Additional detail

    Recorded for American Mistletoe in the same Natural Medicines adverse-effect record shown under A slow heartbeat / Raised blood pressure above.

Everything above comes from the Natural Medicines adverse-effect record for American Mistletoe — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Tobramycin ophthalmic’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Tobramycin ophthalmic column appears here.

Special populations

American Mistletoe in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally. American mistletoe is considered an abortifacient.

Lactation Likely Unsafe

When used orally; avoid using.

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 much people look this up

Where American Mistletoe and Tobramycin ophthalmic 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 American Mistletoe
Steady interest

#1,245 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Tobramycin ophthalmic
Steady interest

#2,605 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 American Mistletoe reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The American Mistletoe and Tobramycin ophthalmic records this page draws on were last updated July 11, 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 American Mistletoe

What is American Mistletoe?

American Mistletoe
  • Traditional folk remedies
  • Digestive complaints
  • Decorative holiday plant

American mistletoe is a parasitic plant that is best known as a holiday decoration, not a proven medicine. It contains toxins that can harm the heart, gut, and blood vessels, and it has little reliable evidence to support any health use. We do not recommend taking it, and all parts should be kept away from children and pets.

Phoradendron leucarpum · Santalaceae · Leaves, stems, and berries · Rarely used as a supplement; historically as tea or dried plant. Most often seen as a holiday decoration.

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

American Mistletoe: dosing

There is no established safe or effective dose of American mistletoe. Because the plant is toxic and not recommended for medicinal use, no dosing guidance can be given.If you ever see a product containing mistletoe, do not take it without first speaking to a pharmacist or doctor. The safest approach is to avoid using American mistletoe internally altogether.

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

Read the full American Mistletoe monograph & all interactions
Medication

About Tobramycin Ophthalmic

What Is Tobramycin Ophthalmic Used For?

Brand name: Tobrex

Tobrex (tobramycin ophthalmic ointment) 0.3% is used to treat external bacterial infections of the eye and the area around it — including the eyelids and conjunctiva. It targets susceptible (antibiotic-sensitive) bacteria, including gram-negative bacteria such as Pseudomonas aeruginosa.

Clinical studies have shown tobramycin ophthalmic to be safe and effective for use in children as well as adults.

See full Tobramycin Ophthalmic drug information
Keep checking

Other Drugs & American Mistletoe

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

190Major
0Moderate
0Minor
2,639No known interaction
190 Major 2,639 No interaction
Major

190 interactions

Showing 60 of 190 major interactions — see all 190 on the American Mistletoe page.

No interaction 2,639 drugs checked — show the list

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

Showing the 60 most looked-up of 2,639 medications checked with no known interaction — see the full American Mistletoe list.

See the full American Mistletoe interactions page
See every supplement checked against Tobramycin ophthalmic, ranked by severity
Evidence & sources

American Mistletoe References

The 4 references that drive our American Mistletoe 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. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Foster S, Tyler VE. Tyler's Honest Herbal, 4th ed., Binghamton, NY: Haworth Herbal Press, 1999. DOI
  4. Moore HW. Mistletoe poisoning: a review of the available literature, and the report of a case of probable fatal poisoning. J S Carolina Med Assoc 1963;59(8):269-271.

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 American Mistletoe and Tobramycin ophthalmic Together: Common Questions

Is it safe to take American Mistletoe with Tobramycin ophthalmic?
We do not list a known interaction between American Mistletoe and Tobramycin ophthalmic. 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.
Does American Mistletoe interact with any other medications?
Yes. American Mistletoe has 190 documented drug interactions in our database — Tobramycin ophthalmic is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.

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

Where next

Keep Exploring

American Mistletoe monograph Uses, safety profile, and every drug interaction in one place Tobramycin Ophthalmic drug information The full plain-English guide to this medication Tobramycin ophthalmic supplement interactions Every supplement checked against Tobramycin ophthalmic, 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 4 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Tobramycin ophthalmic and American Mistletoe?

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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.