Medication interaction hub

What Supplements Interact with Sulfadiazine, Trimethoprim?

Sulfadiazine, Trimethoprim brand name: Coptin. Every interaction below applies to the brands too.

63 Interactions 8 Major 44 Moderate 11 Minor
Curated & coded by · Clinical Pharmacist · Updated September 24, 2026

Drug–supplement interaction data sourced from Natural Medicines Pro, the licensed clinical database from TRC Healthcare / Therapeutic Research, with additional analysis by the HelloPharmacist Pharmacist Team. Our sources · Editorial policy

What is this page for?

One answer, for one medication: what supplements and herbal products interact with Sulfadiazine, Trimethoprim? Every vitamin, herb, and supplement ingredient we’ve checked against it is on this page, ranked by severity, each linking to the full report for that exact pair.

This page covers supplement interactions only — to check Sulfadiazine, Trimethoprim against your other medications, use the drug–drug interaction checker. Educational information from our licensed clinical databases, not medical advice. Our editorial policy

HelloPharmacist Bottom Line
Our Pharmacist Explains
What is this? The interaction data in the HelloPharmacist supplement database is licensed from Natural Medicines Pro by TRC Healthcare (Therapeutic Research). HelloPharmacist pharmacists often add our own analysis and context on top of that licensed data — such as this Bottom Line summary and the notes on individual interaction pages — and any such commentary is noted as ours.

Sulfadiazine with trimethoprim (Coptin) earns more wariness than most antibiotics do, and the eight major-rated interactions on this list of 63 are the ones to understand first. Most of them share a single mechanism. This antibiotic can prolong the QT interval, the heart's electrical reset time, and thirteen supplements here, grapefruit in large amounts and ephedra among them, can add to that effect and raise the risk of a dangerous heart rhythm. The other major standout is PABA, which is the exact substance sulfadiazine blocks in bacteria, so supplementing it can undo the antibiotic entirely.

The 44 moderate entries are mostly logistical rather than dangerous. Twenty-seven are probiotics the antibiotic simply kills off, and a handful of fibers, clays, and charcoal products, including major-rated activated charcoal, can blunt absorption of drugs taken by mouth. Spacing those well apart from your dose handles most of that group; the remaining eleven rate only minor.

— , Clinical Pharmacist · July 18, 2026

Major 8 Moderate 44 Minor 11 No known interaction 1,389

This box checks one ingredient at a time (like turmeric or magnesium). Taking a supplement product with a whole label of ingredients? Search the product instead — we check every ingredient on it ↓

Top Ingredient Interactions

Sulfadiazine, Trimethoprim: Top Interactions at a Glance

The most significant Sulfadiazine, Trimethoprim supplement & herbal interactions, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 63 interacting ingredients — plus 1,389 more checked with no known interaction. See the complete ranked list.

Start here

The Major Interactions to Know About

The most clinically significant Sulfadiazine, Trimethoprim + supplement combinations in our database, best-documented first. Open any card for the full report.

Major Likelihood Likely Para-aminobenzoic Acid (paba) + Sulfadiazine, Trimethoprimi

Theoretically, concomitant use of PABA and sulfonamide antibiotics inhibits the antibacterial effects of sulfonamide.

Read the full interaction Major Likelihood Probable Activated Charcoal + Sulfadiazine, Trimethoprimi

Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the route of administration.

Read the full interaction Major Likelihood Probable Arsenic + Sulfadiazine, Trimethoprimi

Arsenic trioxide can prolong the QT interval.

Read the full interaction Major Likelihood Probable Cesium + Sulfadiazine, Trimethoprimi

Theoretically, taking cesium concomitantly with other drugs that prolong the QT interval may increase the risk of ventricular arrhythmias and death.

Read the full interaction Major Likelihood Probable Ephedra + Sulfadiazine, Trimethoprimi

Theoretically, ephedra might have an additive effect with drugs that prolong the QT interval.

Read the full interaction Major Likelihood Probable Grapefruit + Sulfadiazine, Trimethoprimi

Grapefruit or grapefruit juice, especially if consumed in large amounts, can cause additive QT interval prolongation when taken with QT interval-prolonging drug...

Read the full interaction
The complete list

Every Supplement Checked Against Sulfadiazine, Trimethoprim

All 1,452 ingredients in our database, ranked by severity — 63 with a Sulfadiazine, Trimethoprim interaction on file and 1,389 with none found. Filter by severity or search any ingredient; hover the for what each ingredient is.

Looking for an interaction with a specific supplement product? Search products instead ↓

Straight answers

Can You Take It With Sulfadiazine, Trimethoprim?

One-line answers, one card per combination — scroll through today’s 20 and tap any card for the full report. A different set rotates in daily until every combination has had its turn.

Can you take Lactobacillus Helveticus with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Lactobacillus helveticus with antibiotic drugs might decrease the effectiveness of L.

Full Lactobacillus Helveticus + Sulfadiazine, Trimethoprim answer

Can you take Lactobacillus Jensenii with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Lactobacillus jensenii with antibiotic drugs might decrease the effectiveness of L.

Full Lactobacillus Jensenii + Sulfadiazine, Trimethoprim answer

Can you take Lactobacillus Johnsonii with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Lactobacillus johnsonii with antibiotic drugs might decrease the effectiveness of L.

Full Lactobacillus Johnsonii + Sulfadiazine, Trimethoprim answer

Can you take Latilactobacillus Sakei with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Latilactobacillus sakei with antibiotic drugs might decrease the effectiveness of L.

Full Latilactobacillus Sakei + Sulfadiazine, Trimethoprim answer

Can you take Levilactobacillus Brevis with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Levilactobacillus brevis with antibiotic drugs might decrease the effectiveness of L.

Full Levilactobacillus Brevis + Sulfadiazine, Trimethoprim answer

Can you take Ligilactobacillus Salivarius with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Ligilactobacillus salivarius with antibiotic drugs might decrease the effectiveness of L.

Full Ligilactobacillus Salivarius + Sulfadiazine, Trimethoprim answer

Can you take Limosilactobacillus Fermentum with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Limosilactobacillus fermentum with antibiotic drugs might decrease the effectiveness of L.

Full Limosilactobacillus Fermentum + Sulfadiazine, Trimethoprim answer

Can you take Limosilactobacillus Reuteri with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Limosilactobacillus reuteri with antibiotic drugs might decrease the effectiveness of L.

Full Limosilactobacillus Reuteri + Sulfadiazine, Trimethoprim answer

Can you take Probiotics with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking antibiotic drugs with certain probiotics might decrease the effectiveness of probiotics.

Full Probiotics + Sulfadiazine, Trimethoprim answer

Can you take Procaine with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. A metabolite of procaine, aminobenzoic acid, can antagonize the effect of sulfonamides.

Full Procaine + Sulfadiazine, Trimethoprim answer

Can you take Beer with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Concomitant use may cause a disulfiram-like reaction.

Full Beer + Sulfadiazine, Trimethoprim answer

Can you take Bitter Orange with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, bitter orange might have an additive effect when combined with drugs that prolong the QT interval, potentially increasing the...

Full Bitter Orange + Sulfadiazine, Trimethoprim answer

Can you take Cinchona with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking cinchona with other QT interval-prolonging drugs might cause an additive effect and increase the risk of ventricular a...

Full Cinchona + Sulfadiazine, Trimethoprim answer

Can you take Evodia with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, evodia might have an additive effect with drugs that prolong the QT interval, potentially increasing the risk of ventricular...

Full Evodia + Sulfadiazine, Trimethoprim answer

Can you take Flaxseed with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, antibiotics might interfere with the metabolism of flaxseed constituents, which could potentially alter the effects of flaxse...

Full Flaxseed + Sulfadiazine, Trimethoprim answer

Can you take Guar Gum with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Guar gum might reduce the absorption of some oral drugs, potentially decreasing their effectiveness.

Full Guar Gum + Sulfadiazine, Trimethoprim answer

Can you take Gum Arabic with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, gum arabic can alter the absorption of oral drugs due to its fiber content.

Full Gum Arabic + Sulfadiazine, Trimethoprim answer

Can you take Iboga with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, iboga may have an additive effect with drugs that prolong the QT interval.

Full Iboga + Sulfadiazine, Trimethoprim answer

Can you take K2/spice with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, K2/spice might have an additive effect with drugs that prolong the QT interval and increase the risk of ventricular arrhythmi...

Full K2/spice + Sulfadiazine, Trimethoprim answer

Can you take Panax Ginseng with Sulfadiazine, Trimethoprim?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, Panax ginseng has an additive effect with drugs that prolong the QT interval and potentially increase the risk of ventricular...

Full Panax Ginseng + Sulfadiazine, Trimethoprim answer
Read the list like a pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction 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.
  • Possible. 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
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each entry links to a full report with the clinical detail, likelihood, evidence level, and citations for that exact combination.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

How Does Our Interaction Checker Work?

Behind every verdict on this page is a category system. Our source database doesn’t document supplement interactions drug-by-drug — it documents them against groups of medications that behave the same way (for example, “drugs processed by the CYP3A4 liver enzyme” or “blood-thinning medications”).

So the check works in three steps: (1) Sulfadiazine, Trimethoprim is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Sulfadiazine, Trimethoprim, and (3) each ingredient keeps its own severity, likelihood, and evidence grades from the underlying record. That’s why one supplement can carry several records for one drug — it may interact through more than one category.

Sulfadiazine, Trimethoprim sits in 5 interaction categories. Open any one to see what the group means:

Antibiotic Drugs 27 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

27 of the supplement ingredients on this page reach Sulfadiazine, Trimethoprim through this category.

Oral Drugs 17 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

17 of the supplement ingredients on this page reach Sulfadiazine, Trimethoprim through this category.

Qt Interval-Prolonging Drugs 13 ingredients

Medications that can affect the heart's electrical rhythm (the QT interval). Supplements with similar effects can add to that risk.

13 of the supplement ingredients on this page reach Sulfadiazine, Trimethoprim through this category.

Sulfonamide Antibiotics 4 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

4 of the supplement ingredients on this page reach Sulfadiazine, Trimethoprim through this category.

Trimethoprim (Proloprim) 2 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

2 of the supplement ingredients on this page reach Sulfadiazine, Trimethoprim through this category.

Related: does Sulfadiazine, Trimethoprim deplete any nutrients?

Sulfadiazine, Trimethoprim has 11 reported nutrient associations in the research literature — see the Sulfadiazine, Trimethoprim nutrient depletion report.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Sulfadiazine, Trimethoprim

Most supplements are combination products — and the interaction may come from an ingredient you didn’t buy it for. Search any product below (or scan its label) and we’ll check every ingredient on it against Sulfadiazine, Trimethoprim.

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Products that contain Sulfadiazine, Trimethoprim-interacting ingredients

Real supplements from the NIH label database that contain the top interacting ingredients on this page — each one is worth a full label check before combining with Sulfadiazine, Trimethoprim.

Carda Lean by BS Supplements contains Ephedra Lean 40 by First Choice Supplements contains Ephedra Lipodrene with 25 mg Ephedra Extract by Hi-Tech Pharmaceuticals contains Ephedra Stimerex-ES by HTP Hi-Tech Pharmaceuticals contains Ephedra
Pharmacist Counseling Corner

Sulfadiazine, Trimethoprim & Supplements: Common Questions

What supplements interact with Sulfadiazine, Trimethoprim?
Our database currently documents 63 ingredients with a known Sulfadiazine, Trimethoprim interaction (8 major, 44 moderate, 11 minor). The practical move: scan the major group first, then look up the exact supplements you take rather than reading all 63. The highest-ranked right now: Para-aminobenzoic Acid (paba), Activated Charcoal, Arsenic.
Which Sulfadiazine, Trimethoprim supplement interactions are the most serious?
Focus on the major group: Para-aminobenzoic Acid (paba), Activated Charcoal, Arsenic, Cesium and Ephedra, among others. A major rating means the combination can be clinically significant, not that harm is guaranteed — but it's exactly the kind of thing to run past your pharmacist before your next dose, not after. Jump to the ranked list.
Can I take vitamins or supplements while on Sulfadiazine, Trimethoprim?
Plenty of supplements coexist fine with Sulfadiazine, Trimethoprim; a shorter list does not. Rather than memorizing it, check the specific ingredients on your labels — the ranked list above covers every one we've checked, and multi-ingredient products can be checked label-by-label with our scanner. Try the label scanner or the interaction checker.
Do brands like Coptin have the same supplement interactions as Sulfadiazine, Trimethoprim?
Yes — Coptin all contain Sulfadiazine, Trimethoprim, so everything on this page applies to them equally. Interactions belong to the active drug, never to the brand on the box; the same is true of generics.
Where do these interaction ratings come from?
Every rating comes from the Natural Medicines database — the same evidence-graded reference pharmacists and hospitals use — and each interaction carries three separate grades: severity (how bad it can be), likelihood (how well it's documented in studies and case reports), and an evidence level. Our pharmacists review the content; we never let an AI decide an interaction. See how to read the ratings and our editorial policy.
Does Sulfadiazine, Trimethoprim deplete any vitamins or nutrients?
It might — Sulfadiazine, Trimethoprim has 11 reported nutrient-depletion associations in the research literature, which is a different question from interactions: instead of a supplement changing the drug, the drug may lower a nutrient over time. See the Sulfadiazine, Trimethoprim nutrient depletion report for the specifics and what to discuss with your pharmacist.
What about Sulfadiazine, Trimethoprim and my other medications?
This page covers Sulfadiazine, Trimethoprim against supplements and herbal ingredients. Checking Sulfadiazine, Trimethoprim against your other prescription or OTC medications is a different tool — our drug interaction checker covers that side. Head to the drug–drug interaction checker.

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

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Sourcing

Where This Data Comes From — and Why You Can Trust It

🧪 Licensed clinical database

Every interaction verdict on this page comes from Natural Medicines Pro (TRC Healthcare / Therapeutic Research) — the same evidence-graded reference used by pharmacists and hospitals. We license this data directly; we do not scrape it, and no AI invents an interaction.

🧑‍⚕️ Pharmacist review

This page is curated and coded by , Clinical Pharmacist, with additional analysis by the HelloPharmacist Pharmacist Team. Editorial commentary is ours; the licensed interaction records are shown as sourced.

🔄 Kept current

Our interaction database refreshes on a weekly cycle, and this page re-checks the live database every time it’s rebuilt — what you see reflects the database as of September 24, 2026.

🔍 Full transparency

How every dataset on this site is sourced, licensed, and updated is documented publicly: our data sources · editorial policy · how we use AI.

Educational information, not medical advice. An interaction being on file does not mean it will happen to you — and absence of one is not proof of safety. Never start or stop a medication or supplement without talking to your pharmacist or doctor.