Drug & supplement interaction

Birch + Tolazamide

Tolazamide brand name: Tolinase.

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 Birch and Tolazamide 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.

Know someone taking this? Share
Facebook Post Reddit Email
On this page
Interaction report

Birch and Tolazamide

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 Tolazamide and Birch 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.

Birch safety at a glance

Birch overall Use caution Generally well tolerated in food-like amounts, but allergy and quality concerns warrant caution.
Pregnancy Avoid Not enough safety data, so birch supplements are best avoided during pregnancy.
Breastfeeding Avoid Safety has not been established, so it is best avoided while breastfeeding.

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

Still wondering about combining Tolazamide and Birch? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Tolazamide

Interactions in our licensed database are recorded against drug classes, not just single drug names. Tolazamide is filed under 3 classifications — antidiabetes drugs, photosensitizing drugs, oral drugs. Birch has documented interactions with 1 drug class — the most serious being diuretic drugs (minor) — and none of Tolazamide’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Birch Does Interact With Other Medications

Birch has 75 minor known drug interactions in our database — Tolazamide isn’t one of them. If you take anything else, check it against the full list below.

Minor 75 No known interaction 2,755 (incl. Tolazamide)
Taking anything else?

Check Another of Your Medications Against Birch

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

What to actually watch for

What Birch Itself Has Been Linked To

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

  • An allergic reaction Worth acting on Additional detail

    “Birch and birch pollen can cause allergic reactions. Treatment of birch pollen allergy can involve immunotherapy with birch pollen extract given sublingually and by the oral vestibular route.”

    Birch · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).

    1 source cited
    1. 97762. Allam JP, Wuestenberg E, Wolf H, et al. Immunologic response and safety in birch pollen sublingual versus oral vestibule immunotherapy: a pilot study. J Allergy Clin Immunol. 2014;133(6):1757-9.e3. PubMed
  • A skin rash Additional detail

    “Topically, a case of allergic contact dermatitis has been reported for a 51-year-old male who had been applying a cream containing 5% birch bark extract for 4 months prior to the reaction. The constituent betulin was considered to be the most likely cause. Crushed birch leaves and fresh birch sap may also cause allergic contact dermatitis.”

    Birch · Natural Medicines adverse-effect record, reported in dermatitis.

    2 sources cited
    1. 97763. Meyer-Hoffert U, Brasch J. Allergic contact dermatitis caused by betulin-containing triterpene extract from the outer bark of birch (Betula alba). Contact Dermatitis. 2013;68(6):382-3.
    2. 35666. Lahti, A. and Hannuksela, M. Immediate contact allergy to birch leaves and sap. Contact Dermatitis 1980;6(7):464-465. PubMed

Everything above comes from the Natural Medicines adverse-effect record for Birch — expand a row for the licensed statement it rests on. We haven’t matched Tolazamide to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Tolazamide.

Everything else you take

See Every Supplement That Interacts With Tolazamide

This page covers Birch only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Tolazamide page lists 272 supplements it has a documented interaction with, worst first, each one explained.

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

By severity: 2 major · 230 moderate · 40 minor.

From our pharmacist’s overview on the Tolazamide page

“Tolazamide (Tolinase) lowers blood sugar in type 2 diabetes, and I would handle its supplement list with care, because nearly everything listed can drag blood sugar lower still. Herbs and foods with glucose-lowering effects dominate the file, and stacked on a pill that already lowers glucose they raise the odds of hypoglycemia, blood s…”

Reviewed by 2 · Jul 18, 2026

Open the Tolazamide interaction page

One more smart check

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

We hold 116 real supplement products containing Birch, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Birch. Even though Birch itself has no known interaction with Tolazamide, 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 Birch and Tolazamide 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 Birch
Top 25%

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

29 days ago today
Medication Tolazamide
Top half

#1,086 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 Birch reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Birch and Tolazamide records this page draws on were last updated July 10, 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 Birch

What is Birch?

  • Urinary tract and 'flushing' support
  • Joint pain and arthritis
  • Mild fluid retention (diuretic)
  • Skin conditions (topical)
  • General detox or 'cleansing' tonics

Birch is a tree whose leaves, bark, and sap are used in traditional remedies, most often as a mild diuretic or for joint and urinary complaints. Solid human evidence is limited, and birch is a well-known source of pollen and contact allergies, so caution is important. Talk to a pharmacist or doctor before using birch products, especially if you are pregnant, breastfeeding, or have allergies.

Betula pendula · Betulaceae · Leaves, bark, sap, and essential oil (often distilled from bark or twigs) · Tea, capsules, tinctures, birch sap (water), topical essential oil, and birch tar preparations

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

Birch: dosing

There is no well-established standardized dose for birch. Traditional preparations vary widely, and the strength of teas, tinctures, capsules, and birch water differs by product.If you choose to use a birch product, the safest approach is to follow the directions on the product label and not exceed the recommended amount.

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

Read the full Birch monograph & all interactions
Medication

About Tolazamide

What Is Tolazamide Used For?

Brand name: Tolinase

  • Tolazamide is used along with diet and exercise, and sometimes with other medications, to treat type 2 diabetes (condition in which the body does not use insulin normally and, therefore, cannot control the amount of sugar in the blood). Tolazamide is in a class of medications called sulfonylureas. Tolazamide lowers blood sugar by causing the pancreas to produce insulin (a natural substance that is needed to break down sugar in the body) and helping the body use insulin efficiently. This medication will only help lower blood sugar in people whose bodies produce insulin naturally. Tolazamide is not used to treat type 1 diabetes (condition in which the body does not produce insulin and, therefore, cannot control the amount of sugar in the blood) or diabetic ketoacidosis (a serious condition that may occur if high blood sugar is not treated).

  • Over time, people who have diabetes and high blood sugar can develop serious or life-threatening complications, including heart disease, stroke, kidney problems, nerve damage, and eye problems. Taking medication(s), making lifestyle changes (e.g., diet, exercise, quitting smoking), and regularly checking your blood sugar may help to manage your diabetes and improve your health. This therapy may also decrease your chances of having a heart attack, stroke, or other diabetes-related complications such as kidney failure, nerve damage (numb, cold legs or feet; decreased sexual ability in men and women), eye problems, including changes or loss of vision, or gum disease. Your doctor and other healthcare providers will talk to you about the best way to manage your diabetes.

See full Tolazamide drug information
Keep checking

Other Drugs & Birch

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

0Major
0Moderate
75Minor
2,754No known interaction
75 Minor 2,754 No interaction
Minor

75 interactions

Showing 60 of 75 minor interactions — see all 75 on the Birch page.

No interaction 2,754 drugs checked — show the list

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

Showing the 60 most looked-up of 2,754 medications checked with no known interaction — see the full Birch list.

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

Birch References

The 4 references that drive our Birch 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. Robbers JE, Tyler VE. Tyler's Herbs of Choice: The Therapeutic Use of Phytomedicinals. New York, NY: The Haworth Herbal Press, 1999.
  2. Lahti, A. and Hannuksela, M. Immediate contact allergy to birch leaves and sap. Contact Dermatitis 1980;6(7):464-465. PubMed
  3. Allam JP, Wuestenberg E, Wolf H, et al. Immunologic response and safety in birch pollen sublingual versus oral vestibule immunotherapy: a pilot study. J Allergy Clin Immunol. 2014;133(6):1757-9.e3. PubMed
  4. Meyer-Hoffert U, Brasch J. Allergic contact dermatitis caused by betulin-containing triterpene extract from the outer bark of birch (Betula alba). Contact Dermatitis. 2013;68(6):382-3.

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 Birch and Tolazamide Together: Common Questions

Is it safe to take Birch with Tolazamide?
We do not list a known interaction between Birch and Tolazamide. 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.
How was the Birch and Tolazamide combination checked?
Interactions in our licensed database are recorded against drug classes. Tolazamide is filed under 3 classifications, and Birch has documented interactions with 1 drug class — none of Tolazamide's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Birch interact with any other medications?
Yes. Birch has 75 documented drug interactions in our database — Tolazamide is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Tolazamide interact with any supplements?
Yes. Tolazamide has documented interactions with 272 supplements in our database — Birch is not one of them. The Tolazamide 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

Birch monograph Uses, safety profile, and every drug interaction in one place Tolazamide drug information The full plain-English guide to this medication Tolazamide supplement interactions Every supplement checked against Tolazamide, 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 Tolazamide and Birch?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.