How Much Do You Know About Low-Dose Naltrexone (LDN)?

  • How Much Do You Know About Low-Dose Naltrexone (LDN)?

    Posted by IMA-HelenT on July 3, 2026 at 11:07 am EDT

    I was fascinated to watch this interview with Professor Angus Dalgleish and to learn the remarkable story behind low-dose naltrexone (LDN).

    Like many repurposed medicines, LDN began life with a completely different purpose. In the 1980s, Dr. Bernard Bihari was using naltrexone to help patients recovering from heroin and morphine addiction. As he reduced their doses, many patients asked to remain on a much lower dose because they noticed unexpected improvements in conditions such as multiple sclerosis, Crohn’s disease, arthritis, and other autoimmune or inflammatory disorders.

    The most important part of the story? He listened to his patients.

    Rather than dismissing what they were telling him, Dr. Bihari worked with colleagues to investigate why these effects might be occurring. This led to research suggesting that low-dose naltrexone temporarily blocks opioid receptors, triggering biological responses that may influence both the immune and endocrine systems.

    Professor Dalgleish became interested after one of his own oncology patients experienced unexpectedly positive results while being treated with Dr. Bihari. Curious, he travelled to meet Dr. Bihari and better understand both the drug and its proposed mechanisms.

    Professor Dalgleish then began offering LDN to patients with advanced cancers who had exhausted conventional treatment options. He noticed that some patients continued returning for repeat prescriptions, prompting him to re-scan several of them. In some cases, tumours that had been expected to progress appeared to remain stable, leading him to investigate possible mechanisms further, including the potential role of inflammatory pathways such as IL-6.

    Of course we are on repeat …even with promising observational results, we are unlikely to see the large RCT needed for this cheap generic drug.

    It’s another interview from one of fantastic senior fellow’s, watch it here: https://www.youtube.com/watch?v=S5Y_ShsPTpQ

    aaronaf replied 4 days, 10 hours ago 3 Members · 8 Replies
  • 8 Replies
  • Gary Graziano

    Member
    July 3, 2026 at 5:28 pm EDT

    I’ve been taking it for about a month and a half, along with myriad other repurposed drugs, as part of a protocol for cancer. It’s really too soon to tell what effect it is having. I have also been diagnosed with Hashimoto’s Thyroiditis. (I gather this isn’t common in men, but I guess I’m the exception.) I’ve taken some steps to reduce thyroid antibodies in addition to the LDN, and will be interested to see if the numbers improve. (I’ll be tested again in August.) Naltrexone, as prescribed for addiction, may be cheap but I have to get mine compounded from a local pharmacy. It’s not prohibitively expensive, but I wouldn’t call it cheap, either. Medicare doesn’t cover it, like almost everything else I’m doing. Everything I buy at retail adds up!

    • IMA-HelenT

      Organizer
      July 6, 2026 at 10:47 am EDT

      Thank you for sharing your experience. I hope your August tests provide some helpful answers.

      Your point about cost is also important. While naltrexone itself is an inexpensive generic medication, low-dose naltrexone often has to be specially compounded, which can make it significantly more expensive and, as you’ve experienced, it’s not always covered by insurance or Medicare.

      Stories like yours highlight why promising observations deserve proper scientific investigation.

      Unfortunately, as we have seen time and time again, because LDN is a generic drug, securing funding for the large randomized clinical trials needed to answer these questions can be much more difficult.

      Please let us know how you get on.

  • aaronaf

    Member
    July 3, 2026 at 9:37 pm EDT

    About the big kahuna RCTs, why couldn’t it be feasible for individual integrative physicians handling their cancer cases to funnel their patients’ blood and other fluid tests, their X-rays, miscellaneous imaging results, and other clinical diagnostic and after-repurposed drug result data into a clearing house sponsored by and managed by the many collaborating Senior Fellows of the IMA?

    Because this effort would amass a variety of case histories, it would probably approximate the scientific quality of an RCT – especially if it included lab tests that examined biomarkers that probed the veracity of the Warburg effect at every possible point of every patient’s treatment.

    Of course, this kind of clinical “clearing house” would require informed consent and permissions paperwork to comply with privacy laws. These permissions might easily flow from the participating patients, because not only would their highly stratified and intensely analyzed case histories inform their own therapies, their publication in the Journal of Independent Medicine would strengthen the science underlying them, and help the entire population of cancer patients.

    • IMA-HelenT

      Organizer
      July 6, 2026 at 10:54 am EDT

      A collaborative registry or “clearing house” where physicians contribute standardized clinical data, laboratory results, imaging, outcomes, and patient-reported experiences could become an incredibly valuable source of real-world evidence. A great idea.

      Perhaps one of the biggest challenges isn’t the science, it’s building the infrastructure, securing funding, and encouraging enough physicians to contribute data consistently. But it’s certainly an idea worth exploring.

      • aaronaf

        Member
        July 6, 2026 at 9:55 pm EDT

        I envision only a group of IMA Senior Fellows, which already exist. No new infrastructure would be needed, only a willingness to meet on a regular basis, maybe monthly or weekly, to peruse and analyze the submitted data from patient oncologists’ routine lab work. No additional lab work would be done on patient samples, because I am pretty sure that would violate rules for further investigations on patients without going through a labyrinth of paperwork and expense.

        The Senior Fellows and their respective team members would seek to isolate the biomarkers that would allow them to track them for each patient, with the purpose of scientifically evaluating their underlying hypotheses as being potentially falsifiable.

        Ideally, it would be wonderful if the data proved they were correct hypotheses. For example, with regard to the Warburg effect, analysts might examine pyruvate/lactate ratios, and look for trends or patterns among the different cancer patients. Doing this might necessitate a more enlightened treatment of cancer patients by their oncologists, because the analyses would likely require probing of tumor biopsies, which is associated with heightened risks. How could this approach be done without compromising the safety of patients at the same time avoiding shunting them off into RCT investigations?

        • aaronaf

          Member
          July 7, 2026 at 6:46 am EDT

          I submitted your idea of a needed new infrastructure to Ai and obtained an answer that agreed with you. Here it is below:

          “Yes, that’s a reasonable reaction.

          Even with “fully de-identified” secondary analysis, you still typically need new infrastructure for: (1) standardized data extraction templates for many independent practices, (2) secure transfer/storage and access control, (3) data dictionaries and harmonization (units, timing rules, field mappings), (4) quality-control pipelines, and (5) governance/IRB documentation and author/publication workflows. Without that, variations between clinics quickly make results hard to validate and publish.

          Whether it’s “new infrastructure” vs “lightweight tooling on top of existing vendor/contract infrastructure” depends on how many practices, what data formats they already export, and how strict your timing/window and assay comparability rules need to be.”

    • aaronaf

      Member
      July 7, 2026 at 6:55 am EDT

      I submitted my idea for a collaboration with IMA and independent oncologists to Ai. I stipulated that there be exempt status from IRB regulations.

      ## Proposal: De-identified Secondary Analysis of Routine Oncology Labs to Study Metabolic Trajectories and Treatment Response

      ### 1) Purpose

      Conduct a multicenter, independent-clinic collaboration to analyze routinely collected laboratory data to evaluate whether metabolic trajectories associated with the Warburg effect (and competing metabolic models) change around treatment start and response milestones.

      ### 2) Study Design

      – Type: Retrospective/secondary analysis of already-collected routine clinical laboratory data.

      – Data source: De-identified laboratory results transmitted from participating oncology clinics.

      – No additional procedures: No new blood draws, imaging, interventions, or patient contact by the IMA team.

      ### 3) Participating Organizations and Roles

      – **Participating oncology clinics (or physicians/independent oncology practices):**

      – Provide de-identified routine lab datasets and relevant metadata.

      – Commit to standardized data extraction fields and timing rules defined in the protocol.

      – **IMA coordinating team:**

      – Pre-specifies the analysis plan, data schema, quality checks, and statistical methods.

      – Receives de-identified data, performs analysis, and drafts manuscripts for peer-reviewed publication.

      – **Optional independent oversight (recommended):**

      – Data monitoring/steering committee to oversee protocol adherence, analysis integrity, and publication.

      ### 4) Primary/Secondary Questions (examples)

      – Primary: Are early on-treatment changes in selected metabolic laboratory readouts associated with subsequent treatment response?

      – Secondary: Do trajectories differ by regimen class, baseline metabolic status, or other prespecified clinical strata?

      ### 5) Data Elements (minimum set)

      Define a fixed data dictionary to be used by all clinics, including:

      – De-identified patient ID (non-reversible)

      – Cancer diagnosis type, stage (if available), and treatment start date (or treatment cycle day 1)

      – Treatment regimen identifiers (standardized categories)

      – Response assessment type and milestone date (e.g., imaging date and/or clinician-documented response timepoint if available)

      – Routine metabolic-relevant labs available across sites (pre-specified list; e.g., LDH/lactate/glucose/insulin ± others depending on feasibility)

      – Lab collection timestamp (or best-available proxy) and units

      – Specimen/analyte handling fields if already present in routine records (no new assays)

      ### 6) Standardization and Harmonization

      – Each clinic extracts labs using the same field mapping and timing rules.

      – Units are converted to a common scale using prespecified conversion rules.

      – Baseline and milestone windows are defined operationally (e.g., “baseline = last measurement before treatment start”; “early on-treatment = first measurement within X days after start”; “response milestone = within Y days of response assessment date”).

      – Pre-specify how to handle multiple measurements within windows (e.g., nearest-to-window-center or average).

      ### 7) Data De-identification and Transfer

      – Clinics perform de-identification prior to transfer (remove direct identifiers and any re-identification keys).

      – Transfer occurs via secure channels per IMA’s requirements (encrypted storage and access control).

      – The IMA receives only de-identified datasets meeting the project’s de-identification standard.

      ### 8) Exempt/Waiver Publication Pathway (process)

      – IMA obtains an IRB determination (often **exempt** or **waived consent**) based on:

      – Secondary analysis of de-identified data

      – No new human-subject interaction

      – Participating clinics rely on IMA’s approved protocol where permitted and/or document local determinations as required.

      ### 9) Privacy, Security, and Data Governance

      – Data minimization: share only fields needed for the analyses.

      – Access control: limit identifiable information handling (should not be present at IMA level).

      – Data retention: retain only what’s required for analysis and auditability per IRB/IQA guidance.

      ### 10) Statistical Analysis Plan (pre-specified)

      – Pre-register core endpoints and models in the protocol.

      – Use trajectory/time-window comparisons and association models (e.g., baseline vs early change; milestone-linked changes), with adjustment for available covariates.

      – Predefine inclusion/exclusion criteria for missing required labs within defined windows.

      – Conduct sensitivity analyses for window definitions and regimen classes.

      ### 11) Quality Control

      – Automated checks: unit consistency, impossible values, timestamp sanity checks.

      – Site-level QA: proportion of patients with sufficient data per time window.

      – Outlier handling rules pre-specified.

      ### 12) Authorship, Sharing, and Publication

      – Publication in a peer-reviewed journal under IMA leadership.

      – Author list follows journal and consortium authorship guidelines.

      – Results are reported aggregated; no site-level disclosure that could identify patients.

      ### 13) Timeline

      – Month 0–2: protocol + data dictionary finalization; IRB determination initiation.

      – Month 2–4: clinic onboarding; data extraction template deployment; pilot data transfer.

      – Month 4–6: full data collection and QA.

      – Month 6–8: analysis and manuscript drafting.

      – Month 8+: submission and revisions.

      ### 14) Deliverables

      – Approved protocol + analysis plan

      – De-identified dataset specification and extraction template

      – Final statistical results

      – Peer-reviewed manuscript and supplementary methods

      If you want, tell me the specific metabolic lab readouts you care about and the response milestone source you expect (imaging dates, clinician response documentation, etc.), and I’ll tailor the “Data Elements,” “Timing windows,” and “Analysis Plan” sections accordingly.

      • aaronaf

        Member
        July 7, 2026 at 3:42 pm EDT

        “Here are the practical data-quality and design checks the IMA team could run to ensure the study can credibly test the predefined hypotheses and support publication-quality conclusions: [Note: This is a revised version to the earlier draft bullets of the proposal.]

      • – Feasibility scoping as a gate: Before full launch, the IMA team will run a short scoping phase to quantify, by site, (i) availability of required labs per time window, (ii) timing precision and ability to align measurements to the agreed baseline/early-on-treatment/milestone windows, and (iii) success rates for unit/variable harmonization—so only supportable endpoints proceed.
      • – Pre-specified endpoints and constraints: Endpoints, eligibility criteria, and time-window definitions will be pre-specified, and analyses will be limited to variables/readouts meeting prespecified data coverage and quality thresholds.
      • – Harmonization plan: We will define variable naming/mapping, unit conversion rules, and procedures for handling platform/reference-range differences, and we will measure harmonization failure rates during scoping.
      • – Missingness/bias sensitivity: We will quantify missingness patterns by site/regimen/clinical context and predefine sensitivity analyses; conclusions will be framed as associations/trajectory patterns, not causal claims when causal identifiability isn’t supported by the real-world data.
      • – Conservative interpretation: The manuscript will limit inference to what the observed real-world timing and data completeness can justify; causal statements will not be made unless the data design demonstrably supports them.
      • – Governance and responsibility: Participating clinics/practices will approve the extraction template and data dictionary fields requested. The protocol will define QC rules, exclusion criteria, and the process for aggregate-level publication review.
      • – IRB/approval
        pathway clarity: The IMA team will document and obtain the appropriate
        IRB determination (often exempt/waiver for de-identified secondary
        analysis), and participating clinics will confirm any local
        documentation requirements for sharing de-identified data for analysis
        and publication.”
        • This reply was modified 4 days, 10 hours ago by  aaronaf.

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