PEAK PERFORMANCEMonths to result

Systematic Drug Repurposing

Finding new uses for existing drugs

Problem it solves

Suboptimal health habits undermine energy, performance, and longevity; this framework provides specific evidence-based practices to build a sustainable physical and mental health foundation.

Best for

Patients with rare or terminal diseases

Not ideal for

Patients with common diseases that have established treatments

Overview

Why this framework exists

Dr. Fajgenbaum's approach to curing his own terminal disease, Castleman's, involved systematically exploring existing drugs to find new uses. This approach can be applied to other diseases, particularly rare or terminal ones, where traditional treatment options are limited or ineffective.

Core principles

3 total
  1. Explore existing drugs for new uses
  2. Collaborate with experts from various fields to identify potential treatments
  3. Use a systematic approach to test and validate potential treatments

Steps

3 steps
  1. Identify Potential Drugs
    Research and identify existing drugs that may have potential for treating a specific disease or condition.
    Pro tipCollaborate with experts from various fields, including pharmacology, biology, and medicine, to identify potential drugs.
    WarningEnsure that the identified drugs are safe and have been approved for use in humans.
  2. Test and Validate Potential Treatments
    Conduct experiments and clinical trials to test and validate the potential treatments.
    Pro tipUse a systematic approach to test and validate potential treatments, including flow cytometry, serum proteomics, and immunohistochemistry.
    WarningEnsure that the testing and validation process is rigorous and well-controlled to avoid false positives or false negatives.
  3. Monitor and Adjust Treatment
    Monitor the patient's response to the treatment and adjust the treatment plan as needed.
    Pro tipContinuously monitor the patient's condition and adjust the treatment plan to optimize the treatment's effectiveness.
    WarningBe prepared to adjust the treatment plan if the patient experiences adverse effects or if the treatment is not effective.

Checklist

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Examples

1 cases
Dr. Fajgenbaum's Story

Dr. Fajgenbaum's personal experience with Castleman's disease led him to explore alternative treatment options, including repurposing existing drugs. His success in finding a treatment that put his disease into remission has inspired him to share his approach with others.

OutcomeDr. Fajgenbaum has been in remission for 11 years and 3 quarters, and his approach has inspired others to explore systematic drug repurposing for their own diseases.

Common mistakes

3 traps
Lack of Collaboration
Failing to collaborate with experts from various fields can lead to missed opportunities for identifying potential treatments.
Insufficient Testing and Validation
Failing to conduct rigorous testing and validation can lead to false positives or false negatives, which can be harmful to patients.
Inadequate Monitoring and Adjustment
Failing to continuously monitor the patient's condition and adjust the treatment plan can lead to suboptimal treatment outcomes.

Origin story

How this framework came to be

Dr. Fajgenbaum's personal experience with Castleman's disease led him to explore alternative treatment options, including repurposing existing drugs. His success in finding a treatment that put his disease into remission has inspired him to share his approach with others.

Source

Traced to primary
Source · PODCAST
How A Doctor Cured His Own Terminal Disease | Dr. David Fajgenbaum
Andrew Huberman · 2025
Open source →