Drug & supplement interaction

Tannic Acid + Tolbutamide

Tolbutamide brand name: Orinase.

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 Tannic Acid and Tolbutamide 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

Tannic Acid and Tolbutamide

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 Tolbutamide and Tannic Acid 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 Tannic Acid at all — not against Tolbutamide, 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.

Tannic Acid safety at a glance

Tannic Acid overall Use caution Generally used topically in small amounts, but absorption through broken skin or large burns can harm the liver.
Pregnancy Possibly Unsafe When used topically on damaged or broken skin. There is insufficient reliable information available about the safety of tannic acid when used orally during preg... Read the full pregnancy detail
Breastfeeding Possibly Unsafe When used topically on damaged or broken skin. There is insufficient reliable information available about the safety of tannic acid when used orally during preg... 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 Tolbutamide and Tannic Acid? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Tannic Acid Itself Has Been Linked To

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

  • Liver problems Worth acting on Additional detail

    “Orally, large amounts of tannic acid can cause gastric irritation, nausea, and vomiting (11). Extensive use of tannins on burns or in enemas has been associated with fatal liver damage (11). However, this toxicity may be due to digallic acid, an impurity that is sometimes found in tannic acid (11).”

    Tannic Acid · Natural Medicines adverse-effect record, reported in burns.

    1 source cited
    1. 11. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.

    “Extensive use of tannins on burns or in enemas has been associated with fatal liver damage (11). However, this toxicity may be due to digallic acid, an impurity that is sometimes found in tannic acid (11).”

    Tannic Acid · Natural Medicines adverse-effect record, reported in burns.

    1 source cited
    1. 11. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  • Stomach upset / Vomiting / Nausea Additional detail

    “Orally, large amounts of tannic acid can cause gastric irritation, nausea, and vomiting (11).”

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

    1 source cited
    1. 11. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.

Everything above comes from the Natural Medicines adverse-effect record for Tannic Acid — expand a row for the licensed statement it rests on. We haven’t matched Tolbutamide 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 Tolbutamide.

Special populations

Tannic Acid in Pregnancy & Breastfeeding

Pregnancy And Lactation Possibly Unsafe

When used topically on damaged or broken skin. There is insufficient reliable information available about the safety of tannic acid when used orally during pregnancy and lactation; avoid using amounts greater than those found in foods.

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

Everything else you take

See Every Supplement That Interacts With Tolbutamide

This page covers Tannic Acid only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Tolbutamide page lists 305 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), Adrafinil (moderate) and African Wild Potato (moderate).

By severity: 2 major · 255 moderate · 48 minor.

From our pharmacist’s overview on the Tolbutamide page

“People take tolbutamide (Orinase) to lower blood sugar in type 2 diabetes, and diabetes is exactly the condition supplement shelves target, which is why this list runs to 305 ingredients and deserves real caution. Of those, 239 also push glucose around, most often downward, so combining them can drive sugar lower than intended.”

Reviewed by 2 · Jul 18, 2026

Open the Tolbutamide interaction page

How much people look this up

Where Tannic Acid and Tolbutamide 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 Tannic Acid
Steady interest

#1,250 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Tolbutamide
Steady interest

#1,749 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 Tannic Acid reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Tannic Acid and Tolbutamide 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 Tannic Acid

What is Tannic Acid?

  • Minor skin irritation and weeping rashes
  • Sore throat and mouth sores
  • Minor burns and blisters
  • Astringent for skin
  • Hemorrhoids

Tannic acid is a plant-derived astringent used mostly on the skin and in the mouth to dry out and tighten tissue. There is some traditional and topical use, but high-quality evidence for most uses is limited, and it can be harmful if too much is absorbed, especially on broken skin or burns.

Tannins extracted from plant sources such as oak galls, bark, and certain seeds and leaves · Topical powders and solutions, throat lozenges, gargles, suppositories, and some over-the-counter skin products

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

Tannic Acid: dosing

There is no well-established standard dose of tannic acid for supplement use. The amount varies widely depending on the product and how it is used (for example, a skin solution versus a lozenge).The safest approach is to follow the directions on the product label and not apply it to large areas of broken or burned skin.

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

Read the full Tannic Acid monograph & all interactions
Medication

About Tolbutamide

What Is Tolbutamide Used For?

Brand name: Orinase

  • Tolbutamide 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). Tolbutamide is in a class of medications called sulfonylureas. Tolbutamide 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. Tolbutamide 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 Tolbutamide drug information
Keep checking

Other Drugs & Tannic Acid

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

See the full Tannic Acid interactions page
See every supplement checked against Tolbutamide, ranked by severity
Evidence & sources

Tannic Acid References

The 8 references that drive our Tannic Acid 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. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  3. Covington TR, et al. Handbook of Nonprescription Drugs. 11th ed. Washington, DC: American Pharmaceutical Association, 1996.
  4. Laslett, L. L., Quinn, S. J., Darian-Smith, E., Kwok, M., Fedorova, T., Korner, H., Steels, E., March, L., and Jones, G. Treatment with 4Jointz reduces knee pain over 12 weeks of treatment in patients with clinical knee osteoarthritis: a randomised contr
  5. Smith DB, Jacobson BH. Effect of a blend of comfrey root extract (Symphytum officinale L.) and tannic acid creams in the treatment of osteoarthritis of the knee: randomized, placebo-controlled, double-blind, multiclinical trials. J Chiropr Med. 2011;10(3) PubMed
  6. Goh CL, Yoyong K. A comparison of topical tannic acid versus iontophoresis in the medical treatment of palmar hyperhidrosis. Singapore Med J. 1996;37(5):466-8.
  7. Kołodziej M, Bebenek D, Konarska Z, Szajewska H. Gelatine tannate in the management of acute gastroenteritis in children: a randomised controlled trial. BMJ Open. 2018;8(5):e020205. PubMed
  8. Mennini M, Tolone C, Frassanito A, Midulla F, Cucchiara S, Aloi M. Gelatin tannate for acute childhood gastroenteritis: a randomized, single-blind controlled trial. Paediatr Drugs. 2017 Apr;19(2):131-137. PubMed

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 Tannic Acid and Tolbutamide Together: Common Questions

Is it safe to take Tannic Acid with Tolbutamide?
We do not list a known interaction between Tannic Acid and Tolbutamide. 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 Tolbutamide interact with any supplements?
Yes. Tolbutamide has documented interactions with 305 supplements in our database — Tannic Acid is not one of them. The Tolbutamide 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

Tannic Acid monograph Uses, safety profile, and every drug interaction in one place Tolbutamide drug information The full plain-English guide to this medication Tolbutamide supplement interactions Every supplement checked against Tolbutamide, 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 8 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Tolbutamide and Tannic Acid?

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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.