Drug & supplement interaction

Alder Buckthorn + Mepolizumab

Mepolizumab brand name: Nucala.

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 Alder Buckthorn and Mepolizumab 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

Alder Buckthorn and Mepolizumab

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 Mepolizumab and Alder Buckthorn 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.

Alder Buckthorn safety at a glance

Alder Buckthorn overall Use caution May relieve constipation short-term but can harm the bowel with regular or long-term use.
Pregnancy Avoid Stimulant laxatives like alder buckthorn are generally not recommended during pregnancy.
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 Mepolizumab and Alder Buckthorn? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
Keep it in perspective

Alder Buckthorn Does Interact With Other Medications

Alder Buckthorn has 122 moderate known drug interactions in our database — Mepolizumab isn’t one of them. If you take anything else, check it against the full list below.

Moderate 122 No known interaction 2,708 (incl. Mepolizumab)
Taking anything else?

Check Another of Your Medications Against Alder Buckthorn

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

What to actually watch for

What Alder Buckthorn Itself Has Been Linked To

This is not an interaction — nothing below involves Mepolizumab. It is the side-effect record for Alder Buckthorn on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Alder Buckthorn, this list is the first place to look. One entry is worth acting on rather than waiting out — marked below.

  • Low potassium Worth acting on Additional detail

    “Orally, alder buckthorn seems to be well tolerated when properly aged bark is used appropriately for no more than 8 to 10 days (12). Adverse effects include cramp-like discomfort (2). Chronic use, especially for 9 months or longer, is associated with damage to gastrointestinal epithelial cells and pigmentation of the colonic mucosa, known as pseudomelanosis coli.”

    Alder Buckthorn · Natural Medicines adverse-effect record, reported in albuminuria.

    6 sources cited
    1. 12. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
    2. 2. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
    3. 30743. Siegers, C. P., Hertzberg-Lottin, E., Otte, M., and Schneider, B. Anthranoid laxative abuse--a risk for colorectal cancer? Gut 1993;34(8):1099-1101. PubMed
    4. 37266. van Gorkom, B. A., de Vries, E. G., Karrenbeld, A., and Kleibeuker, J. H. Review article: anthranoid laxatives and their potential carcinogenic effects. Aliment.Pharmacol Ther 1999;13(4):443-452. PubMed
    5. 37269. Willems, M., van Buuren, H. R., and de, Krijger R. Anthranoid self-medication causing rapid development of melanosis coli. Neth.J Med 2003;61(1):22-24.
    6. 6138. Nusko G, Schneider B, Schneider I, et al. Anthranoid laxative use is not a risk factor for colorectal neoplasia: results of a prospective case control study. Gut 2000;46:651-5. PubMed
  • Vomiting Additional detail

    “Orally, adverse effects include cramp-like discomfort (2). Chronic use, especially for 9 months or longer, is associated with damage to gastrointestinal epithelial cells and pigmentation of the colonic mucosa, known as pseudomelanosis coli. The fresh bark contains free anthrone, which can cause severe vomiting.”

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

    3 sources cited
    1. 2. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
    2. 30743. Siegers, C. P., Hertzberg-Lottin, E., Otte, M., and Schneider, B. Anthranoid laxative abuse--a risk for colorectal cancer? Gut 1993;34(8):1099-1101. PubMed
    3. 37266. van Gorkom, B. A., de Vries, E. G., Karrenbeld, A., and Kleibeuker, J. H. Review article: anthranoid laxatives and their potential carcinogenic effects. Aliment.Pharmacol Ther 1999;13(4):443-452. PubMed

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

Special populations

Alder Buckthorn in Pregnancy & Breastfeeding

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

One more smart check

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

We hold 19 real supplement products containing Alder Buckthorn, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Alder Buckthorn. Even though Alder Buckthorn itself has no known interaction with Mepolizumab, 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 Alder Buckthorn and Mepolizumab 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 Alder Buckthorn
Top half

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

29 days ago today
Medication Mepolizumab
Steady interest

#1,422 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 Alder Buckthorn reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Alder Buckthorn and Mepolizumab 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 Alder Buckthorn

What is Alder Buckthorn?

Alder Buckthorn
  • Constipation
  • Bowel cleansing before procedures
  • Occasional irregularity

Alder buckthorn bark is a stimulant laxative traditionally used for short-term relief of constipation. It can work, but it carries real risks with prolonged use, including bowel damage, and should only be used briefly, if at all, after checking with a pharmacist or doctor.

Frangula alnus · Rhamnaceae · Dried, aged bark · Tea, dried bark, liquid extracts, capsules, tablets

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

Alder Buckthorn: dosing

There is no single official "correct" dose for alder buckthorn, and the strength of products can vary a lot. Do not exceed the labeled amount or use it for more than about a week without medical advice.

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

Read the full Alder Buckthorn monograph & all interactions
Medication

About Mepolizumab Injection

What Is Mepolizumab Injection Used For?

Brand name: Nucala

Nucala is used as an add-on maintenance treatment — meaning it works alongside other medications, not instead of them. It is approved for severe asthma (in patients 6 years and older with high eosinophil levels), chronic rhinosinusitis with nasal polyps (CRSwNP) in adults 18 and older whose symptoms aren't controlled by nasal corticosteroids alone, and COPD in adults with an eosinophilic phenotype whose disease isn't adequately controlled.

Nucala is also approved to treat eosinophilic granulomatosis with polyangiitis (EGPA), a rare form of blood vessel inflammation, and hypereosinophilic syndrome (HES), a condition involving dangerously elevated eosinophil counts, in adults and adolescents 12 and older. It is not meant to relieve sudden asthma attacks or acute COPD flares.

Most-Reported Side Effects for Mepolizumab

From FAERS, the FDA’s public side-effect reporting system (49,399 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Asthma 12,767 reports
Dyspnea 10,576 reports
Wheezing 7,131 reports
Cough 5,100 reports
Therapeutic product effect incomplete 5,051 reports
See full Mepolizumab Injection drug information
Keep checking

Other Drugs & Alder Buckthorn

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

0Major
122Moderate
0Minor
2,707No known interaction
122 Moderate 2,707 No interaction
Moderate

122 interactions

Showing 60 of 122 moderate interactions — see all 122 on the Alder Buckthorn page.

No interaction 2,707 drugs checked — show the list

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

Showing the 60 most looked-up of 2,707 medications checked with no known interaction — see the full Alder Buckthorn list.

See the full Alder Buckthorn interactions page
See every supplement checked against Mepolizumab, ranked by severity
Evidence & sources

Alder Buckthorn References

The 10 references that drive our Alder Buckthorn 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. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
  2. Tyler VE. Herbs of Choice. Binghamton, NY: Pharmaceutical Products Press, 1994.
  3. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  4. Schulz V, Hansel R, Tyler VE. Rational Phytotherapy: A Physician's Guide to Herbal Medicine. Terry C. Telger, transl. 3rd ed. Berlin, GER: Springer, 1998.
  5. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  6. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  7. Nusko G, Schneider B, Schneider I, et al. Anthranoid laxative use is not a risk factor for colorectal neoplasia: results of a prospective case control study. Gut 2000;46:651-5. PubMed
  8. Siegers, C. P., Hertzberg-Lottin, E., Otte, M., and Schneider, B. Anthranoid laxative abuse--a risk for colorectal cancer? Gut 1993;34(8):1099-1101. PubMed
  9. van Gorkom, B. A., de Vries, E. G., Karrenbeld, A., and Kleibeuker, J. H. Review article: anthranoid laxatives and their potential carcinogenic effects. Aliment.Pharmacol Ther 1999;13(4):443-452. PubMed
  10. Willems, M., van Buuren, H. R., and de, Krijger R. Anthranoid self-medication causing rapid development of melanosis coli. Neth.J Med 2003;61(1):22-24.

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 Alder Buckthorn and Mepolizumab Together: Common Questions

Is it safe to take Alder Buckthorn with Mepolizumab?
We do not list a known interaction between Alder Buckthorn and Mepolizumab. 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 Alder Buckthorn interact with any other medications?
Yes. Alder Buckthorn has 122 documented drug interactions in our database — Mepolizumab 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

Alder Buckthorn monograph Uses, safety profile, and every drug interaction in one place Mepolizumab Injection drug information The full plain-English guide to this medication Mepolizumab supplement interactions Every supplement checked against Mepolizumab, 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 10 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Mepolizumab and Alder Buckthorn?

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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.