Medication interaction hub

What Supplements Interact with Tetracaine?

Tetracaine brand names: Pontocaine, Ametop. Every interaction below applies to the brands too.

8 Interactions 1 Major 6 Moderate 1 Minor
Curated & coded by · Clinical Pharmacist · Updated October 6, 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 Tetracaine? 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 Tetracaine 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.

Fever bark carries the only major-rated warning here, and anyone facing a procedure with tetracaine (Pontocaine, Ametop), a numbing anesthetic used on skin, in the eyes, and for spinal blocks, should know it first. A reserpine-like constituent in fever bark raises the risk of unstable heart rate and blood pressure under general anesthesia, so I read this list with genuine concern. Five of the eight entries, cannabis among them, touch anesthesia itself, either changing how much anesthetic is needed or adding dangers like severely slowed breathing.

The other three interact with tetracaine as a topical drug. DMSO can pull medications deeper through the skin, amplifying both the numbing and the side effects. Six entries are rated moderate and one minor, and much of the evidence is early or theoretical, but anesthesia leaves little room for surprises. Tell whoever is giving the anesthetic about every supplement you take, ideally before the procedure day.

— , Clinical Pharmacist · July 18, 2026

Major 1 Moderate 6 Minor 1 No known interaction 1,444

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

Tetracaine: Top Interactions at a Glance

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

Showing the 8 highest-ranked of 8 interacting ingredients — plus 1,444 more checked with no known interaction. See the complete ranked list.

Start here

The Major Interactions to Know About

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

Major Likelihood Probable Fever Bark + Tetracainei

Theoretically, fever bark might increase the risk of cardiovascular instability with general anesthesia.

Read the full interaction
The complete list

Every Supplement Checked Against Tetracaine

All 1,452 ingredients in our database, ranked by severity — 8 with a Tetracaine interaction on file and 1,444 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 Tetracaine?

One-line answers, one card per combination — scroll through today’s 16 and tap any card for the full report. A different set rotates in daily until every combination has had its turn.

Can you take Fever Bark with Tetracaine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Theoretically, fever bark might increase the risk of cardiovascular instability with general anesthesia.

Full Fever Bark + Tetracaine answer

Can you take Cannabis with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Cannabis use might alter the safety and clinical effects of various forms of anesthesia.

Full Cannabis + Tetracaine answer

Can you take Cowhage with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concomitant use of cowhage and anesthesia might increase the risk of arrhythmias.

Full Cowhage + Tetracaine answer

Can you take Datura Wrightii with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Datura wrightii causes respiratory depression.

Full Datura Wrightii + Tetracaine answer

Can you take Delta-9-tetrahydrocannabinol (thc) with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. THC use might alter the safety and clinical effects of various forms of anesthesia.

Full Delta-9-tetrahydrocannabinol (thc) + Tetracaine answer

Can you take Dimethylsulfoxide (dmso) with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Topical DMSO might increase the effects and adverse effects of topical drugs.

Full Dimethylsulfoxide (dmso) + Tetracaine answer

Can you take Turpentine Oil with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Some in vitro research shows that alpha-pinene, the major constituent of turpentine oil, does not increase the absorption of chlorpromazine...

Full Turpentine Oil + Tetracaine answer

Can you take Alchemilla with Tetracaine?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. While no side effects have been reported from orally using Alchemilla, a clinical study titled "Treatment of Aphthous Stomatitis with Topica...

Full Alchemilla + Tetracaine answer

Can you take Fever Bark with Tetracaine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Theoretically, fever bark might increase the risk of cardiovascular instability with general anesthesia.

Full Fever Bark + Tetracaine answer

Can you take Cannabis with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Cannabis use might alter the safety and clinical effects of various forms of anesthesia.

Full Cannabis + Tetracaine answer

Can you take Cowhage with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concomitant use of cowhage and anesthesia might increase the risk of arrhythmias.

Full Cowhage + Tetracaine answer

Can you take Datura Wrightii with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Datura wrightii causes respiratory depression.

Full Datura Wrightii + Tetracaine answer

Can you take Delta-9-tetrahydrocannabinol (thc) with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. THC use might alter the safety and clinical effects of various forms of anesthesia.

Full Delta-9-tetrahydrocannabinol (thc) + Tetracaine answer

Can you take Dimethylsulfoxide (dmso) with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Topical DMSO might increase the effects and adverse effects of topical drugs.

Full Dimethylsulfoxide (dmso) + Tetracaine answer

Can you take Turpentine Oil with Tetracaine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Some in vitro research shows that alpha-pinene, the major constituent of turpentine oil, does not increase the absorption of chlorpromazine...

Full Turpentine Oil + Tetracaine answer

Can you take Alchemilla with Tetracaine?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. While no side effects have been reported from orally using Alchemilla, a clinical study titled "Treatment of Aphthous Stomatitis with Topica...

Full Alchemilla + Tetracaine 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) Tetracaine is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Tetracaine, 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.

Tetracaine sits in 2 interaction categories. Open any one to see what the group means:

Anesthesia 5 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.

5 of the supplement ingredients on this page reach Tetracaine through this category.

Topical Drugs 3 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.

3 of the supplement ingredients on this page reach Tetracaine through this category.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Tetracaine

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 Tetracaine.

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Pharmacist Counseling Corner

Tetracaine & Supplements: Common Questions

What supplements interact with Tetracaine?
Our database currently documents 8 ingredients with a known Tetracaine interaction (1 major, 6 moderate, 1 minor). The practical move: scan the major group first, then look up the exact supplements you take rather than reading all 8. The highest-ranked right now: Fever Bark, Cannabis, Cowhage.
Which Tetracaine supplement interactions are the most serious?
The 1 major-rated combination — led by Fever Bark — deserve real caution: these are the ones generally best avoided, or used only with your prescriber watching. If you take any of them today, don't panic and don't stop anything abruptly — call your pharmacist first. Jump to the ranked list.
Can I take vitamins or supplements while on Tetracaine?
Plenty of supplements coexist fine with Tetracaine; 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 Pontocaine have the same supplement interactions as Tetracaine?
Yes — Pontocaine, Ametop all contain Tetracaine, 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.
What about Tetracaine and my other medications?
This page covers Tetracaine against supplements and herbal ingredients. Checking Tetracaine 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

Where next

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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 October 6, 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.