Drug & supplement interaction

Octopamine + Dextromethorphan HBr, Guaifenesin

Dextromethorphan HBr, Guaifenesin brand names: Vicks Formula 44E Cough & Chest Congestion Relief, Pediatric Vicks Formula 44e Cough & Chest Congesti.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Octopamine and Dextromethorphan HBr, Guaifenesin in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first.

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Interaction report

Octopamine and Dextromethorphan HBr, Guaifenesin

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Dextromethorphan HBr, Guaifenesin and Octopamine in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Octopamine safety at a glance

Octopamine overall Use caution It has stimulant-like effects and limited safety data, so use carefully and only after talking to a health professional.
Pregnancy Avoid Not enough safety information; avoid during pregnancy.
Breastfeeding Avoid Not enough safety information; avoid while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Dextromethorphan HBr, Guaifenesin and Octopamine? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Dextromethorphan HBr, Guaifenesin

Interactions in our licensed database are recorded against drug classes, not just single drug names. Dextromethorphan HBr, Guaifenesin is filed under 6 classifications — including serotonergic drugs, serotonergic drugs, cytochrome p450 2d6 (cyp2d6) substrates. Octopamine has documented interactions with 3 drug classes — the most serious being antihypertensive drugs (moderate), monoamine oxidase inhibitors (maois) (moderate) and stimulant drugs (minor) — and none of Dextromethorphan HBr, Guaifenesin’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Octopamine Does Interact With Other Medications

Octopamine has 181 moderate, 171 minor known drug interactions in our database — Dextromethorphan HBr, Guaifenesin isn’t one of them. If you take anything else, check it against the full list below.

Moderate 181 Minor 171 No known interaction 2,478 (incl. Dextromethorphan HBr, Guaifenesin)
Taking anything else?

Check Another of Your Medications Against Octopamine

Covers the 2,830 medications we’ve checked against Octopamine. Pick one to open its full report.

What to actually watch for

What Octopamine Itself Has Been Linked To

This is not an interaction — nothing below involves Dextromethorphan HBr, Guaifenesin. It is the side-effect record for Octopamine on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Octopamine, this list is the first place to look. 2 entries are worth acting on rather than waiting out — marked below.

  • Dehydration / Chest pain Worth acting on Additional detail

    “Octopamine is commonly used as a stimulant. Due to its chemical similarities to synephrine, a stimulant with the potential to cause severe cardiovascular effects, Health Canada has set the maximum daily dose of octopamine at 50 mg.”

    Octopamine · Natural Medicines adverse-effect record, reported in angina.

    2 sources cited
    1. 91684. Health Canada. Synephrine, Octopamine and Caffeine Health Risk Assessment (HRA) Report. Approved May 16, 2011. Accessed November 6, 2019. Available at: http://www.nutratechinc.com/advz/Studies2011/Safety/S1%20Health%20Canada%200511.pdf.
    2. 100091. Smedema JP, Müller GJ. Coronary spasm and thrombosis in a bodybuilder using a nutritional supplement containing synephrine, octopamine, tyramine and caffeine. S Afr Med J. 2008;98(5):372-3.
  • A heart attack Worth acting on Additional detail

    “Octopamine is chemically similar to synephrine, a stimulant that might cause severe adverse effects in some patients. Due to theoretical concerns for stimulant-related adverse effects, Health Canada has set the maximum daily dose of octopamine at 50 mg. However, clinical evidence on the safety of octopamine at any dose is lacking.”

    Octopamine · Natural Medicines adverse-effect record, reported in myasthenia gravis.

    2 sources cited
    1. 91684. Health Canada. Synephrine, Octopamine and Caffeine Health Risk Assessment (HRA) Report. Approved May 16, 2011. Accessed November 6, 2019. Available at: http://www.nutratechinc.com/advz/Studies2011/Safety/S1%20Health%20Canada%200511.pdf.
    2. 100091. Smedema JP, Müller GJ. Coronary spasm and thrombosis in a bodybuilder using a nutritional supplement containing synephrine, octopamine, tyramine and caffeine. S Afr Med J. 2008;98(5):372-3.

Everything above comes from the Natural Medicines adverse-effect record for Octopamine — expand a row for the licensed statement it rests on. We haven’t matched Dextromethorphan HBr, Guaifenesin to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Dextromethorphan HBr, Guaifenesin.

Everything else you take

See Every Supplement That Interacts With Dextromethorphan HBr, Guaifenesin

This page covers Octopamine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Dextromethorphan HBr, Guaifenesin page lists 171 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Grapefruit (major), Lithium (major), St. John's Wort (major) and 1,3-dmaa (moderate).

By severity: 4 major · 125 moderate · 42 minor.

From our pharmacist’s overview on the Dextromethorphan HBr, Guaifenesin page

“A bad cough tends to hit when supplements are already on the counter, and anyone reaching for Vicks Formula 44E (dextromethorphan HBr and guaifenesin) should treat this list with real care, since 4 of its 171 entries carry a major rating. Two themes dominate.”

Reviewed by 2 · Jul 18, 2026

Open the Dextromethorphan HBr, Guaifenesin interaction page

One more smart check

Taking Octopamine as Part of a Dietary Supplement Product? Check It for Interactions

We hold 118 real supplement products containing Octopamine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Octopamine. Even though Octopamine itself has no known interaction with Dextromethorphan HBr, Guaifenesin, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Octopamine and Dextromethorphan HBr, Guaifenesin Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Octopamine
Steady interest

#777 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Dextromethorphan HBr, Guaifenesin
Top 25%

#664 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Octopamine reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Octopamine and Dextromethorphan HBr, Guaifenesin records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Octopamine

What is Octopamine?

  • Weight loss and fat burning
  • Boosting energy
  • Athletic performance
  • Appetite suppression

Octopamine is a stimulant-like compound found in small amounts in some plants (such as bitter orange) and made naturally in the body. It is marketed mostly in weight-loss and sports supplements, but human evidence that it actually helps with fat loss or performance is very limited. Because it can affect the heart and blood pressure and is banned in some sports, talk to a pharmacist or doctor before using it.

Octopamine is a naturally occurring compound; supplement forms are usually synthetic or derived from bitter orange (Citrus aurantium) peel · Capsules, tablets, powders (often in fat-burner and pre-workout blends)

An interaction check asks whether these two react with each other — it does not ask whether Octopamine is a good idea for someone in your situation. Here is what our Octopamine record says about it on its own.

Octopamine: dosing

There is no well-established, standardized dose for octopamine as a supplement. It usually appears in combination products, and amounts vary widely from one brand to another.If you choose to use a product containing octopamine, follow the directions on the label and do not exceed them.

From our Octopamine monograph — the full record covers uses, side effects and every documented interaction.

Read the full Octopamine monograph & all interactions
Medication

About Dextromethorphan HBr, Guaifenesin

Most-Reported Side Effects for Dextromethorphan HBr, Guaifenesin

From FAERS, the FDA’s public side-effect reporting system (1,675 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Dyspnea 140 reports
Pneumonia 123 reports
Nausea 120 reports
Cough 119 reports
Fatigue 118 reports
Keep checking

Other Drugs & Octopamine

Browse every other medication we’ve checked against Octopamine — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
181Moderate
171Minor
2,477No known interaction
181 Moderate 171 Minor 2,477 No interaction
Moderate

181 interactions

Showing 60 of 181 moderate interactions — see all 181 on the Octopamine page.

Minor

171 interactions

Showing 60 of 171 minor interactions — see all 171 on the Octopamine page.

No interaction 2,477 drugs checked — show the list

We also checked Octopamine against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,477 medications checked with no known interaction — see the full Octopamine list.

See the full Octopamine interactions page
See every supplement checked against Dextromethorphan HBr, Guaifenesin, ranked by severity
Evidence & sources

Octopamine References

The 6 references that drive our Octopamine monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Visentin V, Morin N, Fontana E, et al. Dual action of octopamine on glucose transport into adipocytes: inhibition via beta3-adrenoceptor activation and stimulation via oxidation by amine oxidases. J Pharmacol Exp Ther 2001;299:96-104.
  2. Health Canada. Synephrine, Octopamine and Caffeine Health Risk Assessment (HRA) Report. Approved May 16, 2011. Accessed November 6, 2019. Available at: http://www.nutratechinc.com/advz/Studies2011/Safety/S1%20Health%20Canada%200511.pdf.
  3. Pawar RS, Grundel E. Overview of regulation of dietary supplements in the USA and issues of adulteration with phenethylamines (PEAs). Drug Test Anal 2017;9:500-517. PubMed
  4. Beaumont RE, Cordery P, James LJ, Watson P. Supplementation with a low-dose of octopamine does not influence endurance cycling performance in recreationally active men. J Sci Med Sport. 2017;20(10):952-956. PubMed
  5. Smedema JP, Müller GJ. Coronary spasm and thrombosis in a bodybuilder using a nutritional supplement containing synephrine, octopamine, tyramine and caffeine. S Afr Med J. 2008;98(5):372-3.
  6. Fontana E, Morin N, Prévot D, Carpéné C. Effects of octopamine on lipolysis, glucose transport and amine oxidation in mammalian fat cells. Comp Biochem Physiol C Toxicol Pharmacol. 2000;125(1):33-44. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Octopamine and Dextromethorphan HBr, Guaifenesin Together: Common Questions

Is it safe to take Octopamine with Dextromethorphan HBr, Guaifenesin?
We do not list a known interaction between Octopamine and Dextromethorphan HBr, Guaifenesin. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
How was the Octopamine and Dextromethorphan HBr, Guaifenesin combination checked?
Interactions in our licensed database are recorded against drug classes. Dextromethorphan HBr, Guaifenesin is filed under 6 classifications, and Octopamine has documented interactions with 3 drug classes — none of Dextromethorphan HBr, Guaifenesin's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Octopamine interact with any other medications?
Yes. Octopamine has 352 documented drug interactions in our database — Dextromethorphan HBr, Guaifenesin is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Dextromethorphan HBr, Guaifenesin interact with any supplements?
Yes. Dextromethorphan HBr, Guaifenesin has documented interactions with 171 supplements in our database — Octopamine is not one of them. The Dextromethorphan HBr, Guaifenesin interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Octopamine monograph Uses, safety profile, and every drug interaction in one place Dextromethorphan HBr, Guaifenesin supplement interactions Every supplement checked against Dextromethorphan HBr, Guaifenesin, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 6 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Dextromethorphan HBr, Guaifenesin and Octopamine?

Our pharmacists answer your medication & supplement questions — free.

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.