Atlantic Cedar + Meperidine, Promethazine
Meperidine, Promethazine brand names: Meprozine, Mepergan.
We found no known interaction between Atlantic Cedar and Meperidine, Promethazine 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.
Atlantic Cedar and Meperidine, Promethazine
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 Meperidine, Promethazine and Atlantic Cedar 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.
Worth understanding: our licensed dataset holds no drug-interaction record for Atlantic Cedar at all — not against Meperidine, Promethazine, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.
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.
Atlantic Cedar safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
See Every Supplement That Interacts With Meperidine, Promethazine
This page covers Atlantic Cedar only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Meperidine, Promethazine page lists 207 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: 1,4-butanediol (major), Activated Charcoal (major), Beer (major), Gamma-hydroxybutyrate (ghb) (major) and Henbane (major).
By severity: 10 major · 160 moderate · 37 minor.
From our pharmacist’s overview on the Meperidine, Promethazine page
“Meprozine combines meperidine, an opioid painkiller, with promethazine, a sedating antihistamine, so it already slows the brain on two fronts. I would read this list of 207 supplements and herbal ingredients with genuine care, starting with the 10 rated major.”
Reviewed by 2 · Jul 18, 2026
Taking Atlantic Cedar as Part of a Dietary Supplement Product? Check It for Interactions
We hold 2 real supplement products containing Atlantic Cedar, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Atlantic Cedar. Even though Atlantic Cedar itself has no known interaction with Meperidine, Promethazine, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Atlantic Cedar and Meperidine, Promethazine 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.
#858 of 1,452 supplements looked up here in the last 7 days
#462 of 2,830 medications looked up here in the last 7 days
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 Atlantic Cedar reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Atlantic Cedar and Meperidine, Promethazine records this page draws on were last updated June 22, 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.
About Atlantic Cedar
What is Atlantic Cedar?
- Hair loss (alopecia areata)
- Insect repellent
- Antimicrobial and antifungal
- Aromatherapy and relaxation
- Fragrance in cosmetics and perfumes
Atlantic cedar (Cedrus atlantica) is a tree whose wood and essential oil are used in traditional medicine, mainly applied to the skin and scalp or used as a scent. Human evidence for its health benefits is very limited, and the oil should be used diluted and never swallowed. Talk to a pharmacist or doctor before using it, especially if you are pregnant, breastfeeding, or treating a child.
Cedrus atlantica · Pinaceae · Wood and essential oil · Essential oil, topical preparations, aromatherapy products, cosmetics and soaps
An interaction check asks whether these two react with each other — it does not ask whether Atlantic Cedar is a good idea for someone in your situation. Here is what our Atlantic Cedar record says about it on its own.
Atlantic Cedar: dosing
There is no established standard dose for Atlantic cedar. It is not meant to be taken by mouth, and most use is topical or as a scent.If you use a product containing the oil, follow the directions on the label and dilute the essential oil in a carrier oil before applying it to skin.
From our Atlantic Cedar monograph — the full record covers uses, side effects and every documented interaction.
Other Drugs & Atlantic Cedar
Browse every other medication we’ve checked against Atlantic Cedar — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked Atlantic Cedar against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Testosterone ›
- Losartan Potassium ›
- Metoprolol ›
- Aspirin ›
- Ivermectin ›
- Rivaroxaban ›
- Rosuvastatin ›
- Escitalopram ›
- Acetaminophen ›
- Tadalafil ›
- Clopidogrel ›
- Atorvastatin ›
- Docusate ›
- Valacyclovir ›
- Hydroxyurea ›
- Abemaciclib ›
- Ibuprofen ›
- Methamphetamine ›
- Sumatriptan ›
- Semaglutide ›
- Warfarin Sodium ›
- Tirzepatide ›
- Prednisone ›
- Propranolol ›
- Bupropion ›
- Metformin ›
- Lisdexamfetamine ›
- Amoxicillin ›
- Acyclovir ›
- Lisinopril ›
- Bendamustine ›
- Amitriptyline ›
- Doxycycline ›
- Methotrexate ›
- Fluoxetine ›
- Lamotrigine ›
- Amphetamine ›
- Gabapentin ›
- Pregabalin ›
- Acetaminophen, Codeine ›
- Azithromycin ›
- Dextroamphetamine ›
- Isotretinoin ›
- Clonazepam ›
- Omeprazole ›
- Quetiapine ›
- Methylene Blue ›
- Duloxetine ›
- Amlodipine Besylate ›
- Letrozole ›
- Buspirone ›
- Citalopram ›
- Naproxen ›
- Ciprofloxacin ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Atlantic Cedar list.
Atlantic Cedar References
The 1 references that drive our Atlantic Cedar 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.
- Hay IC, Jamieson M, Ormerod AD. Randomized trial of aromatherapy. Successful treatment for alopecia areata. Arch Dermatol 1998;134:1349-52. 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.
Taking Atlantic Cedar and Meperidine, Promethazine Together: Common Questions
Is it safe to take Atlantic Cedar with Meperidine, Promethazine?
Does Meperidine, Promethazine interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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.