10/29/2026
Last week, Keith Bishop Prevail Over Cancer and Paul Conrady broke down why the “right dose” is not whatever a bottle, social media post, online protocol, or friend tells you to take.
In Part 2 of Chamber Chatter at Hyperbaric Plus, the conversation goes deeper into how dosing becomes personal, how supplement stacks create hidden interactions, why product quality matters, and what should actually be monitored when supplements or repurposed medications are added to a cancer-support plan.
THE RIGHT DOSE, PART 2
When More Becomes Too Much
Every supplement and medication has a therapeutic window. Below that range, you may get no benefit. Above it, the risk of liver injury, nerve symptoms, bleeding, toxicity, or treatment interactions can rise.
The right dose is not universal. Age, weight, liver function, kidney function, genetics, medications, supplements, and cancer treatment can all change what is appropriate for one person compared with another.
WHY “MORE” IS NOT ALWAYS BETTER
Part 1 introduced the five rights Keith used as a pharmacist: right person, right medicine, right dose, right time, and right route.
Part 2 builds on that principle by looking at the problems created when people stack multiple products, copy online protocols, switch formulations, or assume that “natural” automatically means safe.
Product form matters too. A standard supplement and an enhanced-absorption or concentrated form may create very different exposure even when the front label looks similar.
STACKING AND INTERACTIONS
Several individually reasonable products can still become a problem when combined.
Keith and Paul discuss why everyone on your healthcare team should know every prescription, supplement, powder, drop, and repurposed medication you use.
The goal is one shared list, one coordinated plan, and a clear reason for every product:
• What is this for?
• What marker or symptom are we trying to change?
• How will we know if it is working?
• What could it interact with?
• When should we recheck labs?
AGENTS DISCUSSED
Fenbendazole: A veterinary product with no established human cancer dose from clinical trials. Liver injury has been reported after self-administration based on social-media information.
Ivermectin: Laboratory concentrations studied in cancer research may not translate directly into safe human dosing. Toxicity from self-dosing has included confusion, balance problems, and other neurologic symptoms.
Low-dose naltrexone (LDN): The “low” is part of the mechanism. It can interfere with opioid pain medicines, and compounded strength needs to be accurate.
Melatonin: Product content can vary substantially from the label. Timing, morning grogginess, product quality, and child safety all matter.
Vitamin B12: Long-term metformin can contribute to deficiency. Testing may include B12, methylmalonic acid (MMA), and homocysteine rather than relying on one number alone.
Curcumin/Turmeric: Enhanced formulations can dramatically change absorption. Turmeric products have also been associated with liver injury in case reports and may increase bleeding risk.
WHAT TO MONITOR
Testing to discuss with your healthcare team may include:
• Comprehensive metabolic panel for ALT, AST, bilirubin, creatinine, and eGFR
• CBC with differential
• Vitamin B12 with MMA and homocysteine
• 25-OH vitamin D
• Magnesium
• PT/INR when using blood thinners
• Fasting glucose when using agents that may affect blood sugar
Keith also emphasizes baseline testing, follow-up testing after changes, product verification through third-party standards such as USP or NSF, and reviewing liver and kidney function before assuming a dose is safe.
THE BROWN-BAG REVIEW
Bring every bottle you take to your doctor, pharmacist, or integrative team. Include prescriptions, supplements, powders, drops, gummies, herbs, and “natural” products.
Change one thing at a time whenever possible. Keep a journal with the product, brand, start date, reason for taking it, and how you feel. Recheck labs after changes and review everything before surgery, scans, or new cancer treatment.
The bigger message is simple:
The right dose is not found online. It is found in your labs, your history, your medication list, your treatment plan, and a healthcare team that knows the whole picture.
Prevail. Assess. Don’t Guess.
LINKS AND RESOURCES
Prevail Over Cancer:
https://www.prevailovercancer.com/
https://www.youtube.com/
https://www.instagram.com/prevailovercancer/
Hyperbaric Plus:
https://www.hyperbaric.plus/
https://www.youtube.com/
https://www.instagram.com/hyperbaricplus/
Seminar handouts:
https://drive.google.com/drive/folders/1wi_Jq0TfpvJ-fmWMpgngoXynXGlYcgMm?usp=sharing
EDUCATIONAL DISCLAIMER: Educational only. Not intended to diagnose, treat, cure, or prevent disease or replace advice from your physician or oncology team. Supplements have not been evaluated by the FDA. Never start, stop, or change medication without consulting your prescriber.