Drug & supplement interaction

Elderflower + Insulin Glargine

Insulin Glargine brand names: Basaglar, Lusduna, Semglee.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Elderflower has a moderate interaction with Insulin Glargine. Theoretically, elderflower might increase the risk of hypoglycemia when taken with antidiabetes drugs.

Read the full interaction report
SeverityModerate
LikelihoodPossible
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Elderflower and Insulin Glargine

Here is the interaction we found between these two, with the evidence behind it.

Moderate

ANTIDIABETES DRUGS

Why this applies to Insulin Glargine

Insulin Glargine falls under ANTIDIABETES DRUGS — the group Elderflower interacts with.

Theoretically, elderflower might increase the risk of hypoglycemia when taken with antidiabetes drugs.
In vitro research suggests that elderflower might lower blood glucose levels. Monitor blood glucose levels closely.
Severity Moderate Likelihood Possible Evidence D

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the thing to keep in mind with elderflower and your insulin glargine (Basaglar, Lusduna, Semglee). Some lab studies hint that elderflower might lower blood sugar on its own. Insulin glargine already does the heavy lifting of bringing your sugar down, so stacking something that nudges it lower could, in theory, push you into hypoglycemia (low blood sugar). That can show up as shakiness, sweating, dizziness, confusion, or a fast heartbeat.

I'll be straight with you though: this is based only on test-tube and animal research, not real people, so the actual risk is uncertain and likely small. A cup of elderflower tea probably won't rock the boat. Still, if you add a concentrated supplement, check your blood glucose a bit more often and loop in your pharmacist or doctor first. Never adjust your insulin on your own.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Gray AM, Abdel-Wahab YH, Flatt PR. The traditional plant treatment, Sambucus nigra (elder), exhibits insulin-like and insulin-releasing actions in vitro. J Nutr 2000;130:15-20. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Elderflower Also Interacts With Other Medications

Elderflower has 85 moderate known drug interactions in our database — the Insulin Glargine one above is one of them. If you take anything else, check it against the full list below.

Moderate 85 No known interaction 2,745 (incl. Insulin Glargine)
Taking anything else?

Check Another of Your Medications Against Elderflower

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

Everything else you take

See Every Supplement That Interacts With Insulin Glargine

This page covers Elderflower only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Insulin Glargine page lists 242 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Chelation Therapy Products (major), Siberian Cocklebur (major), Acai (moderate), African Wild Potato (moderate) and Agaricus Mushroom (moderate).

By severity: 2 major · 211 moderate · 29 minor.

Open the Insulin Glargine interaction page

How much people look this up

Where Elderflower and Insulin Glargine 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 Elderflower
Steady interest

#1,399 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Insulin Glargine
Top half

#1,394 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.

Supplement

About Elderflower

What is Elderflower?

  • Colds and flu
  • Sinus congestion
  • Fever and sweating
  • Sore throat
  • Coughs

Elderflower comes from the elder plant (Sambucus nigra) and is traditionally used as a tea or extract for colds, sinus congestion, and fever. Good-quality human evidence is limited, so it should be seen as a soothing traditional remedy rather than a proven treatment. Raw or unripe parts of the plant can be toxic, so use only properly prepared products, and check with your pharmacist or doctor first.

Read the full Elderflower monograph & all interactions
Medication

About Insulin Glargine (rDNA origin) Injection

What Is Insulin Glargine (rDNA origin) Injection Used For?

Brand names: Basaglar, Lusduna, Semglee

Insulin glargine is used to improve glycemic control (blood sugar management) in adults and pediatric patients with type 1 diabetes mellitus, and in adults with type 2 diabetes mellitus. It is a long-acting basal insulin, meaning it works gradually over the course of the day to keep blood sugar steady.

Insulin glargine is not recommended for treating diabetic ketoacidosis (a serious complication where the blood becomes dangerously acidic).

See full Insulin Glargine (rDNA origin) Injection drug information
Keep checking

Other Drugs & Elderflower

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

0Major
85Moderate
0Minor
2,744No known interaction
85 Moderate 2,744 No interaction
Moderate

85 interactions

Showing 60 of 85 moderate interactions — see all 85 on the Elderflower page.

No interaction 2,744 drugs checked — show the list

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

Showing the 60 most looked-up of 2,744 medications checked with no known interaction — see the full Elderflower list.

See the full Elderflower interactions page
See every supplement checked against Insulin Glargine, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Elderflower monograph › Uses, safety, and every drug interaction in one place Insulin Glargine supplement interactions › Every supplement checked against Insulin Glargine, ranked by severity Insulin Glargine (rDNA origin) Injection drug information › The full plain-English guide to this medication Supplement interaction checker › Check any supplement or product against your medications Browse medications A–Z › Every drug we've checked against herbs & supplements Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Elderflower and Insulin Glargine Together: Common Questions

Can you take Elderflower with Insulin Glargine?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
How serious is the Elderflower and Insulin Glargine interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

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

Still Have a Question About Insulin Glargine and Elderflower?

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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.