Medication interaction hub

What Supplements Interact with Procainamide?

Procainamide brand names: Pronestyl, Procanbid, Procan SR, Procan, Pronestyl-SR. Every interaction below applies to the brands too.

59 Interactions 9 Major 39 Moderate 11 Minor
Curated & coded by · Clinical Pharmacist · Updated September 27, 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 Procainamide? 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 Procainamide 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.

Procainamide treats serious heart rhythm problems, and anything that nudges the heart's electrical timing further can turn a helpful drug into a hazard, so I would give this list genuine care. Nine of the 59 supplements on file carry a major rating, and the 13 QT prolongers are the ones to understand first. Grapefruit in large amounts is among them, and each can stretch the same heart interval procainamide already affects, raising the risk of a dangerous arrhythmia.

The other groups matter too. Thirty ingredients share procainamide's anticholinergic side effects (dry mouth, constipation, blurred vision) and can stack them, while 17, led by activated charcoal, can cut how much of an oral dose actually gets absorbed. Most entries rate moderate and 11 are only minor, but keep charcoal well apart from your doses and clear any of the nine major entries with your pharmacist first.

— , Clinical Pharmacist · July 18, 2026

Major 9 Moderate 39 Minor 11 No known interaction 1,393

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 ↓

Most Viewed Ingredient Interactions

Procainamide: Top Interactions at a Glance

The Procainamide supplement & herbal interactions people checked most in the last 24 hours, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 59 interacting ingredients — plus 1,393 more checked with no known interaction. See the complete ranked list.

Start here

The Most-Checked Procainamide Combinations Today

The Procainamide + supplement pages people viewed most in the last 24 hours (resets at midnight). Open any card for the full report.

Moderate Likelihood Possible Methylene Blue + Procainamidei

Concomitant use may increase anticholinergic effects and adverse effects.

Read the full interaction Moderate Likelihood Possible Calamus + Procainamidei

Theoretically, concurrent use of anticholinergic drugs and calamus might decrease the effectiveness of the anticholinergic drug.

Read the full interaction Moderate Likelihood Possible Sage + Procainamidei

Theoretically, sage might decrease the clinical effects of anticholinergic drugs.

Read the full interaction Moderate Likelihood Possible Corkwood Tree + Procainamidei

Theoretically, corkwood tree might increase the risk of adverse anticholinergic effects when taken with anticholinergic drugs.

Read the full interaction Major Likelihood Probable Arsenic + Procainamidei

Arsenic trioxide can prolong the QT interval.

Read the full interaction Major Likelihood Probable Activated Charcoal + Procainamidei

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

Read the full interaction
The complete list

Every Supplement Checked Against Procainamide

All 1,452 ingredients in our database, ranked by severity — 59 with a Procainamide interaction on file and 1,393 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 Procainamide?

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 Methylene Blue with Procainamide?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Concomitant use may increase anticholinergic effects and adverse effects.

Full Methylene Blue + Procainamide answer

Can you take Calamus with Procainamide?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concurrent use of anticholinergic drugs and calamus might decrease the effectiveness of the anticholinergic drug.

Full Calamus + Procainamide answer

Can you take Sage with Procainamide?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, sage might decrease the clinical effects of anticholinergic drugs.

Full Sage + Procainamide answer

Can you take Corkwood Tree with Procainamide?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, corkwood tree might increase the risk of adverse anticholinergic effects when taken with anticholinergic drugs.

Full Corkwood Tree + Procainamide answer

Can you take Arsenic with Procainamide?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Arsenic trioxide can prolong the QT interval.

Full Arsenic + Procainamide answer

Can you take Thyme with Procainamide?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concurrent use of anticholinergic drugs and thyme essential oil might reduce the effects of anticholinergic drugs.

Full Thyme + Procainamide answer

Can you take Toothed Clubmoss with Procainamide?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. In animal models, toothed clubmoss and huperzine A, an active constituent of toothed clubmoss, reversed cognitive deficits induced by scopol...

Full Toothed Clubmoss + Procainamide answer

Can you take Tragacanth with Procainamide?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, tragacanth might alter absorption of oral drugs.

Full Tragacanth + Procainamide answer

Can you take Wild Lettuce with Procainamide?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Studies report varying evidence on whether or not wild lettuce contains hyoscyamine, an anticholinergic drug.

Full Wild Lettuce + Procainamide answer

Can you take Thyroid Extract with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Food and medications can interfere with thyroid hormone absorption.

Full Thyroid Extract + Procainamide answer

Can you take Agar with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Agar forms a thick gel, which may disrupt the absorption of nutrients and medications.

Full Agar + Procainamide answer

Can you take Algin with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, algin can alter the absorption of oral drugs.

Full Algin + Procainamide answer

Can you take Black Psyllium with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.

Full Black Psyllium + Procainamide answer

Can you take Blond Psyllium with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.

Full Blond Psyllium + Procainamide answer

Can you take Carob with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, carob might also impair the absorption of oral drugs.

Full Carob + Procainamide answer

Can you take Karaya Gum with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Co-administration of oral drugs with bulk forming laxatives such as karaya gum may decrease, increase, or have no effect on the absorption o...

Full Karaya Gum + Procainamide answer

Can you take Marshmallow with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, mucilage in marshmallow might impair absorption of oral drugs.

Full Marshmallow + Procainamide answer

Can you take Xanthan Gum with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, xanthan gum can alter the absorption of oral drugs due to its fiber qualities.

Full Xanthan Gum + Procainamide answer

Can you take Calabar Bean with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, taking calabar bean might reduce the effects of anticholinergic drugs.

Full Calabar Bean + Procainamide answer

Can you take Deanol with Procainamide?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, deanol might decrease the effectiveness of anticholinergic drugs.

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

Procainamide sits in 4 interaction categories. Open any one to see what the group means:

Anticholinergic Drugs 30 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.

30 of the supplement ingredients on this page reach Procainamide 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 Procainamide 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 Procainamide through this category.

Procainamide 1 ingredient

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.

1 of the supplement ingredient on this page reaches Procainamide through this category.

About Procainamide

Procainamide is an antiarrhythmic medication used to treat life-threatening ventricular arrhythmias (dangerous abnormal heart rhythms).

Generic name: Procainamide  ·  Brand names: Pronestyl, Procanbid, Procan SR, Procan, Pronestyl-SR.

See the full Procainamide drug information
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Take a Supplement Product? Check the Whole Bottle Against Procainamide

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 Procainamide.

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Pharmacist Counseling Corner

Procainamide & Supplements: Common Questions

What supplements interact with Procainamide?
In our interaction database, 59 supplement and herbal ingredients have an interaction with Procainamide on file — 9 rated major, 39 moderate, and 11 minor. That number sounds scarier than it is: severity matters far more than the count, which is why the list on this page is ranked instead of alphabetical. Start at the top. The highest-ranked right now: Activated Charcoal, Arsenic, Cesium.
Which Procainamide supplement interactions are the most serious?
Focus on the major group: Activated Charcoal, Arsenic, Cesium, Ephedra and Grapefruit, 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 Procainamide?
That depends entirely on which supplement. The honest answer for Procainamide is in the ranked list above — and if what you take is a combination product with a dozen ingredients, don't check them one by one: photograph the label with our scanner and we'll check the whole thing at once. Try the label scanner or the interaction checker.
Do brands like Pronestyl have the same supplement interactions as Procainamide?
Yes — Pronestyl, Procanbid, Procan SR, Procan, Pronestyl-SR all contain Procainamide, 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 Procainamide and my other medications?
This page covers Procainamide against supplements and herbal ingredients. Checking Procainamide 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, or read the full Procainamide drug information.

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 27, 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.