Medication interaction hub

What Supplements Interact with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, brand name: Allerstat. Every interaction below applies to the brands too.

91 Interactions 7 Major 69 Moderate 15 Minor
Curated & coded by · Clinical Pharmacist · Updated September 23, 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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,? 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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, 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.

Allerstat packs two antihistamines (pheniramine and pyrilamine) alongside two decongestants (phenylephrine and phenylpropanolamine), so supplements can collide with it two ways, and this is a list I would not skim. Seven of the 91 ingredients rate major, and the rest split 69 moderate, 15 minor. Most either stack stimulant effects onto the decongestants, pushing blood pressure and heart rate up, or add drying anticholinergic effects on top of the antihistamines; ephedra and henbane carry major flags in those two camps.

Everyday caffeine belongs in the stimulant group too, since coffee, black tea, and cola nut all rate moderate, worth remembering while taking a decongestant. A smaller cluster led by activated charcoal, also rated major, can cut how much of an oral dose you absorb, so take those well apart from the medicine. Some major entries hide in plain sight: Sida cordifolia, a weight-loss ingredient, contains ephedrine and doubles up on the decongestant.

— , Clinical Pharmacist · July 18, 2026

Major 7 Moderate 69 Minor 15 No known interaction 1,361

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

Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,: Top Interactions at a Glance

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

Showing the 12 highest-ranked of 91 interacting ingredients — plus 1,361 more checked with no known interaction. See the complete ranked list.

Start here

The Major Interactions to Know About

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

Major Likelihood Probable Activated Charcoal + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,i

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 Ephedra + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,i

Theoretically, concomitant use might increase the risk for serious adverse effects.

Read the full interaction Major Likelihood Probable Henbane + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,i

Concomitant use of henbane can have additive anticholinergic effects and adverse effects with amantadine, antihistamines, atropine, belladonna alkaloids, hyoscy...

Read the full interaction Major Likelihood Probable Peyote + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,i

Concomitant use of peyote with stimulant drugs may increase the risk of adverse CNS effects.

Read the full interaction Major Likelihood Probable Rauvolfia Vomitoria + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,i

Theoretically, concomitant use might cause additive effects.

Read the full interaction Major Likelihood Probable Scopolia + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,i

The alkaloid constituents of scopolia, including hyoscyamine, scopolamine, and atropine, could potentiate the effects and adverse effects of anticholinergic dru...

Read the full interaction
The complete list

Every Supplement Checked Against Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,

All 1,452 ingredients in our database, ranked by severity — 91 with a Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, interaction on file and 1,361 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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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 Ilex Guayusa with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concomitant use might increase stimulant adverse effects.

Full Ilex Guayusa + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Carob with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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 + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Khat with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Cathinone, a constituent of khat, appears to have sympathomimetic effects and can increase blood pressure and heart rate.

Full Khat + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Marjoram with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. In vitro research suggests that marjoram extract can inhibit acetylcholinesterase activity.

Full Marjoram + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Methylene Blue with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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 + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Methylsynephrine with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Methylsynephrine has cardiac stimulant effects.

Full Methylsynephrine + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Nutmeg with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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

Full Nutmeg + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Panax Ginseng with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Panax ginseng with stimulant drugs might increase the risk of adverse stimulant effects.

Full Panax Ginseng + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Phenpromethamine with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking phenpromethamine with stimulant drugs might have additive effects and increase the risk of adverse cardiovascular effe...

Full Phenpromethamine + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Phosphatidylserine with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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

Full Phosphatidylserine + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Poria Mushroom with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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

Full Poria Mushroom + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Purple Nut Sedge with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. In vitro, purple nut sedge dose-dependently inhibits acetylcholinesterase (AChE).

Full Purple Nut Sedge + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Raspberry Ketone with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, raspberry ketone might increase the risk of adverse cardiovascular effects with stimulant drugs.

Full Raspberry Ketone + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Rauwolscine with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking rauwolscine with stimulant drugs might increase the risk of adverse stimulant effects.

Full Rauwolscine + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Sage with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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 + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Securinega Suffruticosa with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Securinega suffruticosa with stimulant drugs might increase the risk of serious adverse effects.

Full Securinega Suffruticosa + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Slippery Elm with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.

Full Slippery Elm + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Syrian Rue with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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

Full Syrian Rue + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Teazle with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. In vitro research suggests that teazle extract can inhibit acetylcholinesterase activity.

Full Teazle + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, answer

Can you take Thyme with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?

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 + Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, 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) Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,, 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.

Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, sits in 4 interaction categories. Open any one to see what the group means:

Stimulant Drugs 44 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.

44 of the supplement ingredients on this page reach Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, through this category.

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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, 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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, through this category.

Alpha-Adrenergic Agonists 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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, through this category.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,

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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,.

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Pharmacist Counseling Corner

Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, & Supplements: Common Questions

What supplements interact with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?
In our interaction database, 91 supplement and herbal ingredients have an interaction with Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, on file — 7 rated major, 69 moderate, and 15 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, Ephedra, Henbane.
Which Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, supplement interactions are the most serious?
Focus on the major group: Activated Charcoal, Ephedra, Henbane, Peyote and Rauvolfia Vomitoria, 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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?
That depends entirely on which supplement. The honest answer for Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, 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 Allerstat have the same supplement interactions as Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,?
Yes — Allerstat all contain Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine,, 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 Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, and my other medications?
This page covers Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, against supplements and herbal ingredients. Checking Pheniramine, Phenylephrine, Phenylpropan, Pyrilamine, 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 23, 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.