Medication interaction hub

What Supplements Interact with Doxylamine Succinate?

Doxylamine Succinate brand name: Unisom. Every interaction below applies to the brands too.

52 Interactions 3 Major 38 Moderate 11 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 Doxylamine Succinate? 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 Doxylamine Succinate 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.

Someone reaching for doxylamine succinate (Unisom) to fall asleep is often the same person browsing the supplement aisle, and that pairing deserves genuine care here. Doxylamine is a strongly anticholinergic antihistamine, meaning it dries you out, fogs thinking, and slows digestion, and 30 of the 52 flagged ingredients pile more of that same load on top. Two of the three major-rated entries, henbane and scopolia, work exactly this way.

The third major is activated charcoal, a popular detox and gas remedy that can soak up an oral dose before it has a chance to work. Bulky fibers like glucomannan blunt absorption in a gentler way, so keep them well separated from the tablet. A smaller cluster of six, ginkgo included, may nudge seizure risk upward. With 38 entries rated moderate and 11 minor, start your reading with those three majors.

— , Clinical Pharmacist · July 18, 2026

Major 3 Moderate 38 Minor 11 No known interaction 1,400

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

Doxylamine Succinate: Top Interactions at a Glance

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

Showing the 12 highest-ranked of 52 interacting ingredients — plus 1,400 more checked with no known interaction. See the complete ranked list.

Start here

The Major Interactions to Know About

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

Major Likelihood Probable Activated Charcoal + Doxylamine Succinatei

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 Henbane + Doxylamine Succinatei

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 Scopolia + Doxylamine Succinatei

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 Doxylamine Succinate

All 1,452 ingredients in our database, ranked by severity — 52 with a Doxylamine Succinate interaction on file and 1,400 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 Doxylamine Succinate?

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 Agar with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Thyme with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Toothed Clubmoss with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Tragacanth with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Wild Lettuce with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Thyroid Extract with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Algin with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Black Psyllium with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Blond Psyllium with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Carob with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Karaya Gum with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Marshmallow with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Xanthan Gum with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Calabar Bean with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Deanol with Doxylamine Succinate?

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 + Doxylamine Succinate answer

Can you take Activated Charcoal with Doxylamine Succinate?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the rout...

Full Activated Charcoal + Doxylamine Succinate answer

Can you take Henbane with Doxylamine Succinate?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Concomitant use of henbane can have additive anticholinergic effects and adverse effects with amantadine, antihistamines, atropine, belladon...

Full Henbane + Doxylamine Succinate answer

Can you take Scopolia with Doxylamine Succinate?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. The alkaloid constituents of scopolia, including hyoscyamine, scopolamine, and atropine, could potentiate the effects and adverse effects of...

Full Scopolia + Doxylamine Succinate answer

Can you take Belladonna with Doxylamine Succinate?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Belladonna may increase the risk of adverse effects when used concomitantly with anticholinergic drugs.

Full Belladonna + Doxylamine Succinate answer

Can you take Betel Nut with Doxylamine Succinate?

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

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

Doxylamine Succinate sits in 3 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 Doxylamine Succinate 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 Doxylamine Succinate through this category.

Seizure Threshold Lowering Drugs 6 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.

6 of the supplement ingredients on this page reach Doxylamine Succinate through this category.

About Doxylamine Succinate

An antihistamine used to treat allergies, cold symptoms, cough, motion sickness, insomnia, and movement disorders.

Generic name: Doxylamine Succinate  ·  Brand name: Unisom.

See the full Diphenhydramine drug information
Check a real product

Take a Supplement Product? Check the Whole Bottle Against Doxylamine Succinate

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 Doxylamine Succinate.

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Pharmacist Counseling Corner

Doxylamine Succinate & Supplements: Common Questions

What supplements interact with Doxylamine Succinate?
Our database currently documents 52 ingredients with a known Doxylamine Succinate interaction (3 major, 38 moderate, 11 minor). The practical move: scan the major group first, then look up the exact supplements you take rather than reading all 52. The highest-ranked right now: Activated Charcoal, Henbane, Scopolia.
Which Doxylamine Succinate supplement interactions are the most serious?
Focus on the major group: Activated Charcoal, Henbane and Scopolia. 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 Doxylamine Succinate?
Plenty of supplements coexist fine with Doxylamine Succinate; 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 Unisom have the same supplement interactions as Doxylamine Succinate?
Yes — Unisom all contain Doxylamine Succinate, 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 Doxylamine Succinate and my other medications?
This page covers Doxylamine Succinate against supplements and herbal ingredients. Checking Doxylamine Succinate 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 Diphenhydramine 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 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.