Drug & supplement interaction

Tamarind + Trimethoprim

Trimethoprim brand names: Proloprim, Trimpex.

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

We found no known interaction between Tamarind and Trimethoprim 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

Tamarind and Trimethoprim

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 Trimethoprim and Tamarind 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.

Tamarind safety at a glance

Tamarind overall Generally safe Tamarind is generally safe when eaten as a food in normal amounts.
Pregnancy Use caution Food amounts are likely fine, but avoid large medicinal or supplement doses without medical advice.
Breastfeeding Use caution Food amounts are likely fine, but medicinal doses have not been well studied.

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

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

Why No Interaction Is Listed for Trimethoprim

Interactions in our licensed database are recorded against drug classes, not just single drug names. Trimethoprim is filed under 4 classifications — including qt interval-prolonging drugs, antibiotic drugs, oral drugs. Tamarind has documented interactions with 3 drug classes — the most serious being antidiabetes drugs (moderate), aspirin (moderate) and ibuprofen (advil, others) (moderate) — and none of Trimethoprim’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

Tamarind Does Interact With Other Medications

Tamarind has 130 moderate known drug interactions in our database — Trimethoprim isn’t one of them. If you take anything else, check it against the full list below.

Moderate 130 No known interaction 2,700 (incl. Trimethoprim)
Taking anything else?

Check Another of Your Medications Against Tamarind

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

What to actually watch for

What Trimethoprim’s Own FDA Label Lists

This is not an interaction — none of it involves Tamarind. These are the most notable effects listed in the ADVERSE REACTIONS section of Trimethoprim’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 9 of them are worth acting on rather than waiting out — marked below.

  • High potassium Worth acting on
  • Low sodium Worth acting on
  • Yellowing of the skin or eyes Worth acting on
  • A severe skin reaction Worth acting on
  • A low platelet count Worth acting on
  • Anemia Worth acting on
  • A severe allergic reaction Worth acting on
  • A low white blood cell count Worth acting on
  • An allergic reaction Worth acting on
  • Fever mentioned in 7.3% of FDA reports for Trimethoprim

Showing the 10 most notable of 14 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Trimethoprim. Read the label on DailyMed › Where a percentage is shown, it is the share of 93,588 voluntary FDA FAERS reports for Trimethoprim that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Tamarind’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Tamarind side to compare — that is a limit of the record, not a statement that Tamarind has no side effects.

From our Q&A

Questions About Tamarind or Trimethoprim

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Tamarind or Trimethoprim, 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 Trimethoprim

This page covers Tamarind only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Trimethoprim page lists 59 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Cesium (major) and Ephedra (major).

By severity: 7 major · 41 moderate · 11 minor.

From our pharmacist’s overview on the Trimethoprim page

“Most prescriptions for trimethoprim are short courses for bladder infections, which makes it easy to assume nothing swallowed alongside it matters much. Seven of the 59 supplement and herbal ingredients here rate major, though, and nearly all of them involve heart rhythm: grapefruit in large amounts, ephedra, and a few others can prolo…”

Reviewed by 2 · Jul 18, 2026

Open the Trimethoprim interaction page

One more smart check

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

We hold 45 real supplement products containing Tamarind, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Tamarind. Even though Tamarind itself has no known interaction with Trimethoprim, 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 Tamarind and Trimethoprim 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 Tamarind
Top half

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

29 days ago today
Medication Trimethoprim
Steady interest

#1,961 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 Tamarind reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Tamarind and Trimethoprim records this page draws on were last updated June 22, 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 Tamarind

What is Tamarind?

  • Constipation and digestive upset
  • Culinary flavoring
  • Fever and sore throat
  • Antioxidant support
  • Traditional wound or skin care

Tamarind is a tangy tropical fruit widely used in cooking and traditional medicine, mainly for digestion and as a mild laxative. While it is a nutritious food, strong human evidence for most of its medicinal claims is limited, so use it mainly as a food and talk to your pharmacist before using concentrated supplements.

Tamarindus indica · Fabaceae · Fruit pulp, seeds, leaves, and bark · Fruit pulp, paste, juice, candy, capsules, powder, and extracts

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

Tamarind: dosing

There is no official, standardized medicinal dose for tamarind. As a food, people eat it in the amounts found in recipes, drinks, or candies, which is generally fine.For supplements such as capsules, powders, or extracts, the best approach is to follow the directions on the product label.

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

Read the full Tamarind monograph & all interactions
Medication

About Trimethoprim

What Is Trimethoprim Used For?

Brand names: Proloprim, Trimpex

Trimethoprim tablets are used to treat initial episodes of uncomplicated urinary tract infections (UTIs). It works against specific bacteria — including E. coli, Proteus mirabilis, Klebsiella pneumoniae, Enterobacter species, and coagulase-negative Staphylococcus species (including S. saprophyticus).

It should only be used when there is a proven or strongly suspected bacterial infection. Your doctor may order a urine culture to confirm which bacteria are present and whether trimethoprim will work against them.

Most-Reported Side Effects for Trimethoprim

From FAERS, the FDA’s public side-effect reporting system (95,001 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fever 6,904 reports
Fatigue 5,992 reports
Diarrhea 5,716 reports
Nausea 5,685 reports
Dyspnea 5,098 reports
See full Trimethoprim drug information
Keep checking

Other Drugs & Tamarind

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

0Major
130Moderate
0Minor
2,699No known interaction
130 Moderate 2,699 No interaction
Moderate

130 interactions

Showing 60 of 130 moderate interactions — see all 130 on the Tamarind page.

No interaction 2,699 drugs checked — show the list

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

Showing the 60 most looked-up of 2,699 medications checked with no known interaction — see the full Tamarind list.

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

Tamarind References

The 3 references that drive our Tamarind 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. Garba M, Yakasai IA, Bakare MT, Munir HY. Effect of Tamarindus indica. L on the bioavailability of ibuprofen in healthy human volunteers. Eur J Drug Metab Pharmacokinet 2003;28:179-84.
  2. Mustapha A, Yakasai IA, Abdu Aguye I. Effect of Tamarindus indica L. on the bioavailability of aspirin in healthy human volunteers. Eur J Drug Metab Pharmacokinet 1996;21:223-6.
  3. Maiti, R., Jana, D., Das, U. K., and Ghosh, D. Antidiabetic effect of aqueous extract of seed of Tamarindus indica in streptozotocin-induced diabetic rats. J Ethnopharmacol. 2004;92(1):85-91. 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 Tamarind and Trimethoprim Together: Common Questions

Is it safe to take Tamarind with Trimethoprim?
We do not list a known interaction between Tamarind and Trimethoprim. 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 Tamarind and Trimethoprim combination checked?
Interactions in our licensed database are recorded against drug classes. Trimethoprim is filed under 4 classifications, and Tamarind has documented interactions with 3 drug classes — none of Trimethoprim'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 Tamarind interact with any other medications?
Yes. Tamarind has 130 documented drug interactions in our database — Trimethoprim 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 Trimethoprim interact with any supplements?
Yes. Trimethoprim has documented interactions with 59 supplements in our database — Tamarind is not one of them. The Trimethoprim 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

Tamarind monograph Uses, safety profile, and every drug interaction in one place Trimethoprim drug information The full plain-English guide to this medication Trimethoprim supplement interactions Every supplement checked against Trimethoprim, 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 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Trimethoprim and Tamarind?

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.