Labdanum + Melphalan
Melphalan brand names: Alkeran, Hepzato.
We found no known interaction between Labdanum and Melphalan 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. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.
Labdanum and Melphalan
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 Melphalan and Labdanum 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 Labdanum at all — not against Melphalan, 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.
Labdanum safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
See Every Supplement That Interacts With Melphalan
This page covers Labdanum only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Melphalan page lists 25 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Acerola (moderate), Alpha-lipoic Acid (moderate), Coenzyme Q10 (moderate) and Coffee Charcoal (moderate).
By severity: 1 major · 14 moderate · 10 minor.
From our pharmacist’s overview on the Melphalan page
“Melphalan is chemotherapy, most often given for multiple myeloma, and anything that weakens it can cost real ground against the cancer, so treat this list with genuine care. The one major entry is activated charcoal, which soaks up drugs in the gut and can lower melphalan exposure even when the drug is given by IV.”
Reviewed by 2 · Jul 18, 2026
Taking Labdanum as Part of a Dietary Supplement Product? Check It for Interactions
We hold 2 real supplement products containing Labdanum, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Labdanum. Even though Labdanum itself has no known interaction with Melphalan, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Labdanum and Melphalan 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.
#734 of 1,452 supplements looked up here in the last 7 days
#845 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 Labdanum reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Labdanum and Melphalan 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.
About Labdanum
What is Labdanum?
- Fragrance and perfumery
- Skin care
- Incense and aromatherapy
- Traditional wound and skin remedies
- Relaxation and stress relief
Labdanum is a sticky, fragrant resin from the rockrose plant (Cistus ladanifer) that is used mainly in perfumes, incense, and aromatherapy. There is very little high-quality human research to support any health or medicinal use, so it should be viewed as a scent and cosmetic ingredient rather than a proven remedy.
Cistus ladanifer · Cistaceae · Sticky resin (oleoresin) and essential oil from the leaves and stems · Essential oil, absolute, resin (used in perfumes and incense), and occasionally in skin-care products
An interaction check asks whether these two react with each other — it does not ask whether Labdanum is a good idea for someone in your situation. Here is what our Labdanum record says about it on its own.
Labdanum: dosing
There is no established or standardized medicinal dose for labdanum. It is not commonly sold as an oral supplement, and reliable human dosing information does not exist.If you use a labdanum essential oil or skin product, follow the directions on the label and dilute essential oils as instructed.
From our Labdanum monograph — the full record covers uses, side effects and every documented interaction.
About Melphalan
What Is Melphalan Used For?
Brand names: Alkeran, Hepzato
Melphalan is used to treat multiple myeloma, a cancer of plasma cells in the bone marrow. Different products are approved for different roles in that treatment.
Evomela (intravenous injection) is used as a high-dose conditioning treatment — meaning it prepares the body before a stem cell transplant. Ivra (intravenous injection) is used for palliative treatment of multiple myeloma in patients for whom oral therapy is not appropriate. Oral melphalan (Alkeran tablet) is also used for palliative treatment of multiple myeloma.
Other Drugs & Labdanum
Browse every other medication we’ve checked against Labdanum — 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 Labdanum against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Warfarin ›
- Methylphenidate ›
- Sertraline ›
- Abemaciclib ›
- Ivermectin ›
- Testosterone ›
- Acetaminophen ›
- Losartan Potassium ›
- Aspirin ›
- Rosuvastatin ›
- Metoprolol ›
- Clopidogrel ›
- Escitalopram ›
- Rivaroxaban ›
- Atorvastatin ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Methamphetamine ›
- Warfarin Sodium ›
- Tadalafil ›
- Valacyclovir ›
- Sumatriptan ›
- Hydroxyurea ›
- Semaglutide ›
- Prednisone ›
- Amitriptyline ›
- Propranolol ›
- Metformin ›
- Lisdexamfetamine ›
- Isotretinoin ›
- Amoxicillin ›
- Methotrexate ›
- Lisinopril ›
- Amlodipine Besylate ›
- Amphetamine ›
- Bendamustine ›
- Bupropion ›
- Fluoxetine ›
- Doxycycline ›
- Azithromycin ›
- Pregabalin ›
- Acyclovir ›
- Lamotrigine ›
- Gabapentin ›
- Dextroamphetamine ›
- Levothyroxine, Liothyronine ›
- Acetaminophen, Codeine ›
- Naproxen ›
- Clonazepam ›
- Quetiapine ›
- Omeprazole ›
- Duloxetine ›
- Methylene Blue ›
- Letrozole ›
- Citalopram ›
- Buspirone ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Labdanum list.
Labdanum References
The 3 references that drive our Labdanum 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.
- García-González JJ, Crespo V, Barber D, et al. Cistus ladanifer contact dermatitis. Contact Dermatitis 2001;45(4):238.
- English JSC, Cronin E. Allergic contact dermatitis from Cistus creticus. Contact Dermatitis 1988;18(2):123.
- Kalus U, Grigorov A, Kadecki O, et al. Cistus incanus (CYSTUS052) for treating patients with infection of the upper respiratory tract. A prospective, randomised, placebo-controlled clinical study. Antiviral Res 2009;84(3):267-71. 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.
Melphalan Is Linked to Lower Levels of One Nutrient
Natural Medicines records Melphalan as a medicine that can lower these. This is not an interaction with Labdanum — it is a separate effect of the medicine, and it is a reason some people are advised to supplement rather than to avoid one:
Read the full Melphalan nutrient depletion report ›
Depletion records come from the licensed Natural Medicines database. Do not start a supplement on the strength of this page — ask your pharmacist or doctor whether it applies to you.
Taking Labdanum and Melphalan Together: Common Questions
Is it safe to take Labdanum with Melphalan?
Do Labdanum and Melphalan have any of the same side effects?
Does Melphalan 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.