Drug & supplement interaction

Sumbul + Verapamil

Verapamil brand names: Isoptin SR, Verelan, Isoptin, Calan SR, Verelan SR, and others.

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

We found no known interaction between Sumbul and Verapamil 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

Sumbul and Verapamil

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 Verapamil and Sumbul 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 Sumbul at all — not against Verapamil, 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.

Sumbul safety at a glance

Sumbul overall Not established Little modern safety data exists, so use cautiously and under professional guidance.
Pregnancy Avoid Safety is not established; avoid use during pregnancy.
Breastfeeding Possibly Unsafe When sumbul leaves are used orally. After a breastfeeding parent consumed sumbul leaves, both the parent and breastfeeding infant experienced several episodes o... 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 Verapamil and Sumbul? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Sumbul Itself Has Been Linked To

This is not an interaction — nothing below involves Verapamil. It is the side-effect record for Sumbul on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Sumbul, this list is the first place to look.

  • Vomiting Additional detail

    “There is currently a limited amount of information on the adverse effects of sumbul.

    Serious Adverse Effects (Rare):

    Orally: Vomiting requiring hospitalization in individuals consuming sumbul leaf.”

    Sumbul · Natural Medicines adverse-effect record, reported in nausea and vomiting.

    “Orally, ingestion of sumbul leaves may cause vomiting. In one case, a mother and nursing infant presented to the emergency department after experiencing several episodes of vomiting two hours after the mother consumed sumbul leaves and later nursed the infant. The amount of sumbul leaves consumed was not reported.”

    Sumbul · Natural Medicines adverse-effect record, reported in nausea and vomiting.

    1 source cited
    1. 106524. Derin H, Yildirim G, Çaksen H. Intoxication from Ferula sumbul leaves in a mother and her infant. J Pediatr Intensive Care 2013;2(4):193-4.

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

Special populations

Sumbul in Pregnancy & Breastfeeding

Lactation Possibly Unsafe

When sumbul leaves are used orally. After a breastfeeding parent consumed sumbul leaves, both the parent and breastfeeding infant experienced several episodes of vomiting two hours later, suggesting that sumbul leaf constituents may pass through breast milk. There is insufficient reliable information available about the effects of sumbul root products during lactation; 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

From our Q&A

Questions About Sumbul or Verapamil

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Sumbul or Verapamil, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Verapamil

This page covers Sumbul only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Verapamil page lists 295 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Beer (major) and Coleus (major).

By severity: 10 major · 245 moderate · 40 minor.

From our pharmacist’s overview on the Verapamil page

“This is one of the longer interaction lists we publish, and with verapamil (Calan, Verelan) it warrants genuine care, starting with the ten major-rated entries. Verapamil lowers blood pressure and slows the heart, so most of the 295 ingredients on file either push that effect further than intended or change how much of the drug reaches…”

Reviewed by 2 · Jul 18, 2026

Open the Verapamil interaction page

One more smart check

Taking Sumbul as Part of a Dietary Supplement Product? Check It for Interactions

We hold 4 real supplement products containing Sumbul, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Sumbul. Even though Sumbul itself has no known interaction with Verapamil, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Sumbul and Verapamil 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 Sumbul
Steady interest

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

29 days ago today
Medication Verapamil
Top 25%

#643 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 Sumbul reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Sumbul and Verapamil 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 Sumbul

What is Sumbul?

Sumbul
  • Nervous tension and anxiety
  • Muscle spasms and cramps
  • Menstrual discomfort
  • Digestive upset
  • Traditional aphrodisiac

Sumbul is a musky-smelling root from a Ferula plant that has been used in traditional medicine mainly as a calming, antispasmodic remedy. There is very little modern scientific research to confirm any of its benefits, and its safety has not been well studied. Talk with a pharmacist or doctor before using it.

Ferula sumbul · Apiaceae · Root (rhizome) · Tincture, fluid extract, dried root, powder

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

Sumbul: dosing

There is no standardized, well-established dose for Sumbul. Historical doses were given as tinctures or fluid extracts, but those figures come from old herbal references and may not be safe or reliable today.If you choose to use a Sumbul product, follow the directions on the label and do not exceed them.

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

Read the full Sumbul monograph & all interactions
Medication

About Verapamil

What Is Verapamil Used For?

Brand names: Isoptin SR, Verelan, Isoptin, Calan SR, Verelan SR, Calan, Covera HS, Verap, Veramil

Verapamil tablets and film-coated tablets are used to treat angina — including vasospastic (Prinzmetal's) angina, unstable angina, and chronic stable angina — as well as certain abnormal heart rhythms (arrhythmias) and high blood pressure (essential hypertension). For arrhythmias, regular-release tablets are used alongside digoxin to control heart rate in atrial flutter or atrial fibrillation, and to help prevent episodes of paroxysmal supraventricular tachycardia (SVT), a type of rapid heartbeat.

Extended-release and sustained-release oral forms (tablets and capsules) are indicated specifically for high blood pressure. Verapamil hydrochloride injection is used in hospital settings for rapid conversion of SVT to normal rhythm and for temporary control of fast heart rates in atrial flutter or atrial fibrillation.

Most-Reported Side Effects for Verapamil

From FAERS, the FDA’s public side-effect reporting system (4,297 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Dyspnea 352 reports
Nausea 351 reports
Dizziness 295 reports
Hypotension 293 reports
Fatigue 275 reports
See full Verapamil drug information
Keep checking

Other Drugs & Sumbul

Browse every other medication we’ve checked against Sumbul — 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 Sumbul 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 Sumbul list.

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

Sumbul References

The 1 references that drive our Sumbul 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. Derin H, Yildirim G, Çaksen H. Intoxication from Ferula sumbul leaves in a mother and her infant. J Pediatr Intensive Care 2013;2(4):193-4.

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 Sumbul and Verapamil Together: Common Questions

Is it safe to take Sumbul with Verapamil?
We do not list a known interaction between Sumbul and Verapamil. 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 Verapamil interact with any supplements?
Yes. Verapamil has documented interactions with 295 supplements in our database — Sumbul is not one of them. The Verapamil 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

Sumbul monograph Uses, safety profile, and every drug interaction in one place Verapamil drug information The full plain-English guide to this medication Verapamil supplement interactions Every supplement checked against Verapamil, 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Verapamil and Sumbul?

Our pharmacists answer your medication & supplement questions — free.

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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.