Drug & supplement interaction

Premorse + Levorphanol

Levorphanol brand name: Levo-Dromoran.

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 Premorse and Levorphanol 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

Premorse and Levorphanol

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 Levorphanol and Premorse 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.

Worth understanding: our licensed dataset holds no drug-interaction record for Premorse at all — not against Levorphanol, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

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.

Premorse safety at a glance

Premorse overall Not established There is very little reliable human safety data for this herb.
Pregnancy Avoid Safety is not established, so avoid use during pregnancy.
Breastfeeding Avoid Safety is not established, so avoid use while breastfeeding.

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

Still wondering about combining Levorphanol and Premorse? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Levorphanol’s Own FDA Label Lists

This is not an interaction — none of it involves Premorse. These are the most notable effects listed in the ADVERSE REACTIONS section of Levorphanol’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.

  • Dependence or withdrawal symptoms Worth acting on
  • Serotonin syndrome Worth acting on
  • Thoughts of self-harm Worth acting on
  • Memory problems Worth acting on
  • Trouble passing urine Worth acting on
  • Low blood sugar Worth acting on
  • A slow heartbeat Worth acting on
  • Confusion Worth acting on
  • Seizures Worth acting on
  • Low mood Worth acting on

Showing the 10 most notable of 30 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 Levorphanol. Read the label on DailyMed › Premorse’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Premorse side to compare — that is a limit of the record, not a statement that Premorse has no side effects.

Everything else you take

See Every Supplement That Interacts With Levorphanol

This page covers Premorse only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Levorphanol page lists 100 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: 1,4-butanediol (major), Activated Charcoal (major), Beer (major), Gamma-hydroxybutyrate (ghb) (major) and Kava (major).

By severity: 7 major · 78 moderate · 15 minor.

From our pharmacist’s overview on the Levorphanol page

“Most of the ingredients that interact with levorphanol (Levo-Dromoran) pile onto the same hazard, deeper sedation. Because levorphanol is a potent opioid painkiller, that stacking can slow breathing rather than just cause drowsiness, so this page deserves real vigilance before you add a supplement to it.”

Reviewed by 2 · Jul 18, 2026

Open the Levorphanol interaction page

How much people look this up

Where Premorse and Levorphanol 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 Premorse
Steady interest

#1,167 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Levorphanol
Top 10%

#243 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. Premorse is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Premorse reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Premorse and Levorphanol 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 Premorse

What is Premorse?

Premorse
  • Coughs and respiratory complaints
  • Common cold and sore throat
  • Skin conditions
  • Digestive upset
  • Mild calming aid

Premorse (devil's-bit scabious) is a traditional European herb used for coughs, colds, and skin problems, but there is very little modern scientific research to confirm it works or is safe. Because evidence is so limited, it is best to talk with a pharmacist or doctor before using it, and to avoid it during pregnancy and breastfeeding.

Succisa pratensis · Caprifoliaceae · Roots, leaves, and flowering tops · Tea, tincture, dried herb, topical preparations

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

Premorse: dosing

There is no established or standardized dose for Premorse. Because it has not been studied in proper clinical trials, no reliable safe and effective amount has been determined.If you choose to use a commercial product, follow the directions on the label and do not take more than recommended. It is a good idea to review the product with a pharmacist first, since strength and quality can vary a lot between brands. When trying any new herb, starting low and watching for any reaction is a sensible approach.

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

Read the full Premorse monograph & all interactions
Medication

About Levorphanol

What Is Levorphanol Used For?

Brand name: Levo-Dromoran

Levorphanol Tartrate Tablets are used to manage pain severe enough to require an opioid — specifically when non-opioid or other pain treatments haven't provided enough relief or aren't a good fit for the patient.

It is not meant for everyday or mild pain. Prescribers weigh the serious risks of opioid therapy carefully before choosing this medication, and it should be used for only as long as the pain requires it.

See full Levorphanol drug information
Keep checking

Other Drugs & Premorse

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

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

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

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Premorse list.

See the full Premorse interactions page
See every supplement checked against Levorphanol, ranked by severity
Evidence & sources

Premorse References

The 3 sources that drive our Premorse monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Premorse is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Herbs at a Glance — NIH NCCIH Source
  2. Herbal Supplements — MedlinePlus Source
  3. Using Dietary Supplements Wisely — NIH NCCIH Source

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 Premorse and Levorphanol Together: Common Questions

Is it safe to take Premorse with Levorphanol?
We do not list a known interaction between Premorse and Levorphanol. 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 Levorphanol interact with any supplements?
Yes. Levorphanol has documented interactions with 100 supplements in our database — Premorse is not one of them. The Levorphanol 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

Premorse monograph Uses, safety profile, and every drug interaction in one place Levorphanol drug information The full plain-English guide to this medication Levorphanol supplement interactions Every supplement checked against Levorphanol, 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 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Levorphanol and Premorse?

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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.