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Peptides Explained: Daily Summaries Delivered
by John Garrett
Peptides Explained breaks down the most talked-about peptides and GLP-1 medications in health, fitness, and longevity — including semaglutide, tirzepatide, BPC-157, TB-500, and more.Hosted by Registered Nurse John Garrett, this podcast explains how these compounds work, why they’re popular, what the research shows, and the real risks and side effects — all in plain language.No bro science. No hype. Just clear, foundational education.For informational purposes only. Not medical advice.
Latest Episodes
The most recent episodes — sign up to get AI-powered summaries of each one.
- Yesterday18 min
Icotyde: The Oral Peptide That Could Change Medicine
Download The Peptide App at ThePeptide.App/Explained For more information on research peptides check out PeptidesExplained.info/OfflinePeptides A peptide…in a pill? Icotyde, or icotrokinra, is an FDA-approved oral peptide designed to block the IL-23 receptor in moderate-to-severe plaque psoriasis. In Phase 3 trials, it produced substantial skin clearance and outperformed an established oral comparator on several key endpoints. But the biggest story may be the delivery platform itself. Peptides usually struggle to survive the digestive tract and reach circulation. Icotyde shows what can happen when medicinal chemistry, structural engineering and extreme receptor potency come together. This episode breaks down what worked, what the safety data show, and what this does—and does not—mean for the future of oral peptides. Educational only. Not medical advice.
- 6 days ago17 min
Why Your Favorite Peptides May Never Get a Big Human Trial
If BPC-157, TB-500, KPV, MOTS-C and similar peptides are so interesting, why don't we have giant randomized human trials? This episode looks at the less dramatic—and more important—answer: clinical trials require a sponsor, regulatory strategy, manufacturing package, defined indication, safety program, and a very large amount of money. For old, easily copied, poorly protected, or commercially fragmented compounds, the incentive to fund definitive trials may be weak. John also explains why that does not excuse the evidence gap. "No Phase 3 trial" is not proof that a peptide works. It simply means confidence should remain limited until better evidence exists. Educational only. Not medical advice.
- 1 weeks ago18 min
The Hollywood Trinity Stack: What Happened When I Tried It
Download The Peptide App @ ThePeptide.App/Explained For more info on research peptides visit PeptidesExplained.info/OfflinePeptides John Garrett shares his N=1 experience with the so-called "Trinity Stack"—established TRT, retatrutide, and tesamorelin—combined with resistance training, Zone 2 cardio, high protein intake, creatine, sauna, and cold plunging. The transformation was dramatic. But what likely came from appetite control? What helped preserve muscle? What might the GH/IGF-1 axis have added? And how much credit belongs to the boring fundamentals? This is a candid personal testimony and accessible science breakdown—not a deep dive, a dosing guide, or a warning lecture. John also explains what happened during an eight-week break and why he recently restarted with a goal of reaching 10% body fat. Educational only. Retatrutide remains investigational and is not FDA-approved.
- 1 weeks ago14 min
SNAP-8: Is "Botox in a Bottle" Real?
SNAP-8 is a synthetic cosmetic octapeptide marketed for expression lines and frequently called "Botox in a bottle." John Garrett, RN, breaks down the SNAP-25 and SNARE-complex mechanism, the difference between topical SNAP-8 and injected botulinum toxin, the skin-penetration problem, the Argireline evidence, a small 2024 microneedle combination study, safety, and the limits of the current human data. The mechanism is plausible. The evidence is not strong enough to call it a needle-free Botox equivalent. Educational content only; not medical advice.
- 2 weeks ago23 min
GLP-1 Microdosing: Smart Strategy or the Next Wellness Fad?
Visit peptidesexplained.info for more info and resources For more info on research peptides check out PeptidesExplained.info/OfflinePeptides or email John at john@peptidesexplained.info What exactly is GLP-1 microdosing? Depending on who you ask, it can mean remaining on the starter dose, taking a fraction of that dose, spacing injections farther apart, stepping down after weight loss, or using a tiny amount for food noise and longevity. Those are not the same strategy. John Garrett breaks down the new low-dose semaglutide and tirzepatide data, FDA-approved dose structures, weight-regain research, maintenance questions, side effects, and the major gap between individualized clinical titration and social-media "microdosing" protocols. Educational content only. Not medical advice.
- 2 weeks ago15 min
Thymalin vs Thymogen: Can Thymus Peptides Reverse Immune Aging?
Can a peptide reverse age-related immune decline? Thymalin and Thymogen are often discussed together, but one is a complex calf-thymus extract and the other is the defined dipeptide Glu-Trp. John Garrett explains thymic involution, T-cell biology, proposed mechanisms, the Russian clinical history, limitations of the human evidence, safety, and U.S. regulatory status. The science is interesting. The "immune rejuvenation" and life-extension claims remain unproven. Educational only. Not medical advice.
- 3 weeks ago22 min
What Is Pinealon? Brain Aging, Neuroprotection, and the Evidence
Check out The Peptide App here: thepeptide.app/explained What is Pinealon, and does this three-amino-acid peptide really protect the aging brain? Pinealon—also called EDR or Glu-Asp-Arg—is a synthetic tripeptide associated with the Khavinson bioregulator research program. It is discussed for memory, neuroprotection, oxidative stress, brain aging, and even Alzheimer's disease, but the evidence is much more complicated than the marketing language suggests. John Garrett, examines Pinealon's proposed mechanism, cell and animal research, a newer induced-neuron study, and the PubMed-indexed human reports that are often overlooked. The episode also explains why Pinealon is different from Epitalon, where the human evidence is weak, what remains unknown about brain exposure and long-term safety, and why a plausible mechanism is not the same thing as an established cognitive therapy. Educational content only. Not medical advice.
- 3 weeks ago19 min
Khavinson Peptide Bioregulators: What Do They Actually Do?
What are Khavinson peptide bioregulators, and what do they actually do? John Garrett examines the Russian research tradition behind organ-derived peptide complexes and synthetic ultrashort peptides. This episode explains the proposed gene-expression mechanism, the claim of tissue specificity, common examples such as Thymalin and Epitalon, the limitations of the human evidence, oral absorption questions, product-quality concerns, safety, and U.S. regulatory status. The science is more interesting than a simple dismissal—but less proven than organ-rejuvenation marketing suggests. This episode is educational and is not medical advice.
About Peptides Explained
Peptides Explained breaks down the most talked-about peptides and GLP-1 medications in health, fitness, and longevity — including semaglutide, tirzepatide, BPC-157, TB-500, and more.Hosted by Registered Nurse John Garrett, this podcast explains how these compounds work, why they’re popular, what the research shows, and the real risks and side effects — all in plain language.No bro science. No hype. Just clear, foundational education.For informational purposes only. Not medical advice.
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