Pulsed Electromagnetic Field (pemf) Therapy + Methylnaltrexone
Methylnaltrexone brand name: Relistor.
We found no known interaction between Pulsed Electromagnetic Field (pemf) Therapy and Methylnaltrexone 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.
Pulsed Electromagnetic Field (pemf) Therapy and Methylnaltrexone
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 Methylnaltrexone and Pulsed Electromagnetic Field (pemf) Therapy in our sources. This does not guarantee that the combination is completely free of risk — research on Pulsed Electromagnetic Field (pemf) Therapy alongside specific medications may be limited.
Worth understanding: our licensed dataset holds no drug-interaction record for Pulsed Electromagnetic Field (pemf) Therapy at all — not against Methylnaltrexone, 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.
Pulsed Electromagnetic Field (pemf) Therapy is a treatment rather than something you take. Tell whoever provides it which medicines you use, and ask your prescriber whether it is appropriate for your health and treatment. 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.
Pulsed Electromagnetic Field (pemf) Therapy safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
What Methylnaltrexone Is Prescribed For, and What Pulsed Electromagnetic Field (pemf) Therapy Has Been Studied For
These two come up together because they touch the same health topic — not because they do the same job. Methylnaltrexone is a prescription medicine with approved uses on its FDA label. Pulsed Electromagnetic Field (pemf) Therapy is a treatment: what follows is what researchers have looked at it for, and how strong that evidence is.
Methylnaltrexone is prescribed for: Methylnaltrexone, sold as Relistor, treats opioid-induced constipation (OIC) — constipation caused by opioid pain medications. Both Relistor tablets and Relistor injection are approved for adults with chronic non-cancer pain, including those with pain related to a prior cancer or its treatment who do not need frequent opioid dose increases. Relistor injection is also approved for adults with advanced illness or active cancer pain who require increasing opioid doses as part of palliative care.
Pulsed Electromagnetic Field (pemf) Therapy has been studied for:
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Cancer studied, not established Pulsed Electromagnetic Field (pemf) Therapy has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows
Pulsed Electromagnetic Field (pemf) Therapy for cancer
Although there is interest in using PEMF therapy for cancer, there is insufficient reliable information about the clinical effects of PEMF therapy for this condition.
Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Methylnaltrexone on your own; if you are taking Pulsed Electromagnetic Field (pemf) Therapy for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.
See Every Supplement That Interacts With Methylnaltrexone
This page covers Pulsed Electromagnetic Field (pemf) Therapy only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Methylnaltrexone page lists 3 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Fever Bark (moderate), Iboga (moderate) and Yohimbe (moderate).
By severity: 3 moderate.
From our pharmacist’s overview on the Methylnaltrexone page
“If you take methylnaltrexone (Relistor) for opioid-induced constipation, the supplement list to know is short: three ingredients, all rated moderate, none major. Yohimbe, fever bark, and iboga are all cleared by the same liver enzyme, CYP2D6, and methylnaltrexone can slow that enzyme, letting their active compounds build up in your blood.”
Reviewed by 2 · Jul 18, 2026
Where Pulsed Electromagnetic Field (pemf) Therapy and Methylnaltrexone 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.
#1,286 of 1,452 supplements looked up here in the last 7 days
#2,078 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 Pulsed Electromagnetic Field (pemf) Therapy reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Pulsed Electromagnetic Field (pemf) Therapy and Methylnaltrexone 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 Pulsed Electromagnetic Field (pemf) Therapy
What is Pulsed Electromagnetic Field (pemf) Therapy?
- Bone healing (fractures and non-unions)
- Osteoarthritis and joint pain
- General pain and inflammation
- Muscle recovery and stiffness
- Wound healing
- Sleep and relaxation
PEMF therapy uses pulsing electromagnetic fields from a device to try to ease pain and support tissue or bone healing. The strongest evidence is for certain bone-healing uses, where it is FDA-cleared; for most other claims the evidence is limited or mixed. It is generally well tolerated, but people with implanted electronic devices and those who are pregnant should avoid it unless a doctor approves.
Not applicable (a device-based therapy, not an herb or supplement) · Mats, pads, rings, handheld wands, and full-body devices that deliver electromagnetic pulses
An interaction check asks whether these two react with each other — it does not ask whether Pulsed Electromagnetic Field (pemf) Therapy is a good idea for someone in your situation. Here is what our Pulsed Electromagnetic Field (pemf) Therapy record says about it on its own.
Pulsed Electromagnetic Field (pemf) Therapy: dosing
There is no single standard dose for PEMF therapy. Settings such as frequency, intensity, session length, and how often to use the device vary widely between products and conditions.For medical-grade devices used for bone healing, the doctor or device maker provides a specific treatment schedule.
From our Pulsed Electromagnetic Field (pemf) Therapy monograph — the full record covers uses, side effects and every documented interaction.
About Methylnaltrexone
What Is Methylnaltrexone Used For?
Brand name: Relistor
Methylnaltrexone, sold as Relistor, treats opioid-induced constipation (OIC) — constipation caused by opioid pain medications. Both Relistor tablets and Relistor injection are approved for adults with chronic non-cancer pain, including those with pain related to a prior cancer or its treatment who do not need frequent opioid dose increases.
Relistor injection is also approved for adults with advanced illness or active cancer pain who require increasing opioid doses as part of palliative care.
Other Drugs & Pulsed Electromagnetic Field (pemf) Therapy
Browse every other medication we’ve checked against Pulsed Electromagnetic Field (pemf) Therapy — 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 Pulsed Electromagnetic Field (pemf) Therapy against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Warfarin ›
- Methylphenidate ›
- Sertraline ›
- Testosterone ›
- Ivermectin ›
- Losartan Potassium ›
- Aspirin ›
- Abemaciclib ›
- Acetaminophen ›
- Metoprolol ›
- Rosuvastatin ›
- Rivaroxaban ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Docusate ›
- Tadalafil ›
- Tirzepatide ›
- Methamphetamine ›
- Ibuprofen ›
- Warfarin Sodium ›
- Valacyclovir ›
- Hydroxyurea ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Propranolol ›
- Lisdexamfetamine ›
- Amitriptyline ›
- Metformin ›
- Amoxicillin ›
- Lisinopril ›
- Isotretinoin ›
- Amlodipine Besylate ›
- Methotrexate ›
- Bendamustine ›
- Bupropion ›
- Amphetamine ›
- Doxycycline ›
- Fluoxetine ›
- Azithromycin ›
- Acyclovir ›
- Pregabalin ›
- Lamotrigine ›
- Dextroamphetamine ›
- Gabapentin ›
- Acetaminophen, Codeine ›
- Levothyroxine, Liothyronine ›
- Clonazepam ›
- Quetiapine ›
- Naproxen ›
- Omeprazole ›
- Letrozole ›
- Duloxetine ›
- Methylene Blue ›
- Buspirone ›
- Citalopram ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Pulsed Electromagnetic Field (pemf) Therapy list.
Pulsed Electromagnetic Field (pemf) Therapy References
The 1 references that drive our Pulsed Electromagnetic Field (pemf) Therapy 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.
- Sutbeyaz ST, Sezer N, Koseoglu F, Kibar S. Low-frequency pulsed electromagnetic field therapy in fibromyalgia: a randomized, double-blind, sham-controlled clinical study. Clin J Pain. 2009;25(8):722-8. 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.
Having Pulsed Electromagnetic Field (pemf) Therapy While Taking Methylnaltrexone: Common Questions
Is it safe to have Pulsed Electromagnetic Field (pemf) Therapy while taking Methylnaltrexone?
Are Pulsed Electromagnetic Field (pemf) Therapy and Methylnaltrexone used for the same thing?
Does Methylnaltrexone 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.