Peptides: The Science, Uses & Safety | Dr. Abud Bakri
Dr. Abud Bakri, an internal medicine physician, provides a masterclass on peptides, including BPC-157, GHK-Cu, pinealon, epithalon, GLP-1s, and retatrutide. He discusses their science, uses, sourcing, safety, and the critical gap between animal and human data, offering a grounded perspective on this evolving field.
Deep Dive Analysis
17 Topic Outline
Defining Peptides and Receptor Categories
BPC-157: Discovery, Animal Data, and Regenerative Effects
BPC-157: Neurological Effects and Legal Status
Peptide Sourcing: Compounding, Gray, and Black Markets
BPC-157: Tumor Growth Concerns and Clinical Trials
BPC-157: Anecdotal Healing Experiences and Physician Liability
Pinelon (EDR): Discovery, Cognitive Effects, and Sleep
Epithalon (AADG): Pineal Function, DNA Repair, and Longevity
Thymus Gland: Involution, Immune Function, and Peptides
TB-500, Thymulin, and Pet Health Applications
GHK-Cu: Discovery, Collagen Synthesis, and Aesthetic Uses
Thymic Health: Illness Recovery and Immune Biomarkers
Growth Hormone Secretagogues: Somatopause, Cancer Risk, and Insulin
GHK-Cu: Topical Application and Red Light Therapy
GLP-1s: Medical Impact, Long-Term Effects, and Fertility
Retatrutide: Drug Patents and Biologic Classification
Peptides for Women's Reproductive Health and TBI
19 Key Concepts
Peptides
Short chains of amino acids that serve as a fundamental language for communication between cells in the human body. They can be categorized based on whether they interact with known receptors or modify biological processes through other mechanisms.
Epigenetic Modifiers
A class of Russian peptides that influence genetic expression by binding to the grooves of DNA. This binding can either open up or close chromatin, thereby regulating which genes are accessible for transcription, similar to the action of steroid hormones.
BPC-157
A 15-amino acid peptide derived from a larger protein found in gastric juices, initially studied for its cytoprotective effects in the gut. In animal models, it has shown regenerative, anti-stress, and organoprotective properties across various tissues, including musculoskeletal and neurological systems.
LD50
The Lethal Dose 50%, representing the amount of a substance required to kill 50% of a test animal population. This is a crucial safety metric for any drug, but for BPC-157, the LD50 has not been determined, complicating its FDA approval process.
Systemic Absorption
The process by which a substance enters the bloodstream and circulates throughout the entire body. Studies suggest that orally or rectally administered BPC-157 does not achieve significant systemic absorption, indicating localized action in the gut.
Gray Market Peptides
Peptides sold online under the label 'for research purposes only,' often sourced from Chinese raw materials without stringent quality control. These products carry significant risks due to potential impurities, incorrect substances, or unreliable dosages.
Angiogenesis
The physiological process of forming new blood vessels from pre-existing ones. BPC-157 can modulate angiogenesis, which is beneficial for wound healing but also raises theoretical concerns about potentially accelerating the growth of existing tumors.
Pinelon (EDR)
A tripeptide (Glu-Asp-Arg) originally derived from brain cortex extract, not the pineal gland, despite its name. It functions as an epigenetic modifier, influencing gene expression to improve brain metabolism, cognitive performance, and anecdotally, enhance REM sleep.
Epithalon (AADG)
A tetrapeptide (Ala-Glu-Asp-Gly) also stemming from pineal gland extract, associated with restoring circadian rhythmicity and enhancing melatonin production. It is believed to support DNA repair and may contribute to longevity by improving age-related pineal function.
Thymus Gland
An immune organ located above the heart that is crucial for the development and training of T cells, ensuring they can effectively target pathogens without attacking the body's own tissues. It undergoes significant shrinkage, known as involution, after puberty.
Thymic Involution
The natural process of the thymus gland shrinking and being replaced by fat after puberty, primarily driven by hormones like androgens, estrogens, and corticosteroids. This decline in thymic function contributes to decreased immune robustness and increased susceptibility to age-related diseases.
Thymulin
A zinc-dependent, nine-amino acid peptide secreted by the thymus, serving as a key marker of thymic function. It plays a role in T cell development and can sensitize target organs to the effects of other hormones, with its levels dramatically decreasing with age.
Thymosin Alpha-1
A 21-amino acid peptide derived from the thymus, known for boosting T cell development and enhancing their ability to combat pathogens. It was previously FDA-approved for certain immune deficiencies and is considered a potent immune-modulating agent.
Thymosin Beta-4 (TB-500)
A 43-amino acid peptide found in the thymus and other tissues, which plays a role in regulating the actin cytoskeleton of cells. It promotes cell migration and tissue repair, making it of interest for healing and, controversially, as a doping agent in sports.
GHK-Cu (Copper GHK)
A tripeptide (glycine-histidine-lysine) complexed with a copper ion, naturally found in type 1 collagen fibers. It is involved in both the synthesis and breakdown of collagen, making it popular for skin rejuvenation, wound healing, and potentially hair health.
Somatopause
The age-related decline in the body's production of growth hormone, typically beginning in the 30s. This leads to reduced IGF-1 levels and is associated with various signs of aging, including changes in body composition, skin quality, and recovery capacity.
Growth Hormone Secretagogues
Compounds (e.g., tesamorelin, ipamorelin, MK-677) that stimulate the body's own pituitary gland to release more growth hormone. Unlike exogenous growth hormone, they work by enhancing natural secretion, often used to combat somatopause for anti-aging or body composition goals.
GLP-1s (Glucagon-Like Peptide-1s)
A class of peptides (e.g., semaglutide, tirzepatide) that act as agonists for GLP-1 receptors, primarily in the gut and brain. They are highly effective for weight loss and diabetes management by reducing appetite and improving insulin sensitivity.
Trinity Stack
A popular, albeit unproven, combination of GLP-1s (for insulin sensitivity), growth hormone or GHRH (for muscle growth and fat loss), and androgen modulation therapies (e.g., TRT). This stack is anecdotally used by some for rapid and significant body composition transformations.
19 Questions Answered
Peptides are short chains of amino acids that act as a language for communication between cells, either by binding to specific receptors or by modifying existing proteins and genetic expression.
No, a specific receptor for BPC-157 has not yet been identified, though it is thought to impact biology by modifying proteins or assisting gene transcription.
BPC-157 has shown impressive effects in animals, including accelerated healing of tendons, ligaments, and nerves, promotion of general tissue repair, and anti-stress effects, particularly in the gut.
In small phase one clinical trials using rectal BPC-157, no adverse effects were reported, but comprehensive human data on safety and long-term effects are largely unavailable.
BPC-157's legal status is complex and varies by state; it's not FDA-approved, was moved to a 'do not compound' list, but then removed, creating a gray area where some prescribers use modified versions.
Pharmaceutical peptides undergo stringent FDA approval; compounding pharmacies can make non-FDA approved versions during shortages or for specific patient needs (with varying quality); gray market peptides are sold 'for research only' with unknown quality, and black market peptides are entirely unregulated and risky.
While BPC-157 promotes angiogenesis (new blood vessel growth), animal literature has not shown a signal for cancer, and in some models, it has even decreased VEGF, suggesting potential anti-cancer effects, though human data is lacking.
The most promising applications include treating ulcerative colitis and GERD (gastric issues), addressing neuropsychiatric conditions like addiction, and accelerating healing after musculoskeletal injuries or surgeries.
Pinelon, a tripeptide (EDR) from the brain cortex, acts as an epigenetic modifier to improve brain metabolism, cognitive performance, and can significantly increase REM sleep, especially when taken at night.
Epithalon, a tetrapeptide (AADG) from pineal gland extract, is believed to restore circadian rhythmicity, enhance melatonin production, and support DNA repair, potentially combating age-related decline in pineal function and offering longevity benefits.
The thymus gland, located above the heart, secretes hormones and trains T cells for the immune system; it grows until puberty and then dramatically shrinks (thymic involution) with age, leading to decreased immune function and increased disease risk.
Thymic size can be assessed via whole-body MRI scans, and a simple, inexpensive blood test like the lymphocyte-to-monocyte ratio on a CBC can provide a general indicator of immune health, with a higher ratio suggesting a more robust immune state.
Thymulin is a zinc-dependent, nine-amino acid peptide secreted by the thymus that is a marker of thymus function and can augment hormone effects; ensuring sufficient zinc status is necessary for its production.
GHK-Cu is a tripeptide with a copper ion, found in collagen, that regulates both collagen synthesis and breakdown; it's used topically for skin rejuvenation (e.g., reducing crow's feet) and may help with post-UV damage, often synergistically with red light therapy.
Growth hormone secretagogues (e.g., tesamorelin, ipamorelin, MK-677) stimulate the body's own growth hormone production to combat somatopause, potentially aiding fat loss, muscle gain, and youthful appearance, but may negatively impact insulin sensitivity and raise concerns about promoting cancer growth.
GLP-1 drugs (e.g., semaglutide, tirzepatide) are highly effective for weight loss and diabetes but raise questions about lifelong use, potential for regaining weight upon cessation, and possible cognitive/motivational changes, especially with high doses or inadequate nutritional support.
Retatrutide, a multi-agonist peptide, is significant because pharmaceutical companies are exploring classifying it as a biologic (over 40 amino acids) to secure longer patent protection and prevent compounding, potentially making it a multi-billion dollar drug.
There is currently no literature or data, animal or human, to suggest that BPC-157 or similar peptides can help or hurt conditions like endometriosis or fibroids, which are primarily considered hormonal or metabolic issues.
BPC-157 exhibits homeostatic neurological effects in mice, preventing them from getting too drunk or experiencing severe withdrawal symptoms, and modulating responses to stimulants. This suggests a gut-brain axis interaction that could explain anecdotal reports of anhedonia in humans, but there's no good data on BPC for TBI.
14 Actionable Insights
1. Prioritize Foundational Health Habits
Before considering peptides, ensure basic health habits are in place, including morning sunlight exposure, adequate sleep, darkness at night, a good diet with minimally processed foods, and stress management. These foundational elements are crucial for overall health and to maximize any potential benefits from peptides.
2. Seek Physician Guidance for Peptides
If interested in peptides, establish a good relationship with a physician knowledgeable about them. They can monitor your health, counsel on appropriate use, and help navigate the complex and often unregulated landscape of peptide availability and safety.
3. Inquire About Compounded Drug Costs
When obtaining compounded medications, including peptides, from a clinician, ask about the cost the clinician pays the pharmacy versus what they charge you. This transparency helps understand any administrative fees or markups.
4. Understand Telehealth Peptide Laws
Be aware that telehealth laws regarding peptide prescriptions are determined by the state where the patient resides. A prescription legal in one state may be illegal in another, potentially leading to medical board issues for the prescribing physician.
5. Beware Gray Market Peptide Risks
Exercise extreme caution with peptides from ‘research purposes only’ websites (gray market) as their quality, purity, and even the identity of the substance are unreliable. These sources lack proper regulation and can lead to adverse effects or incorrect compounds.
6. Oral BPC Stays Local
Oral or rectally administered BPC-157 does not appear to go systemic, meaning it primarily acts locally within the gastric tissues. This suggests that for systemic effects, other administration routes like injection would be necessary.
7. Adjust Pinelon Dosage for Sleep
If using Pinelon (EDR) for sleep, start with a lower dose than typically recommended, as individual sensitivity varies greatly. High doses may lead to sedation, but also potential sleep disruption or overly vivid dreams for some individuals.
8. Consider Pinelon for Cognitive Performance
Pinelon (EDR) may enhance cognitive performance and reduce brain fog when taken in the morning or before a workout. Animal studies suggest it can maintain performance even during exhaustion, though human data is anecdotal.
9. Monitor Blood Sugar with Pinelon
Be mindful that Pinelon (EDR) can cause a drop in blood sugar due to its activation of PPR alpha and PPR gamma pathways, leading to positive metabolic effects. Individuals with hypoglycemia or blood sugar issues should monitor their levels.
10. Ensure Adequate Zinc for Thymulin
Maintain sufficient zinc status to support the body’s natural production of thymulin, a key peptide for thymus function and immune health. Zinc depletion can lead to a significant drop in thymulin levels.
11. Monitor Lymphocyte-Monocyte Ratio
Regularly check your lymphocyte-to-monocyte ratio on a standard CBC blood test, as it’s an inexpensive indicator of immune health. A higher ratio of lymphocytes to monocytes generally suggests a more robust immune state and is associated with better outcomes across various disease states.
12. Integrate GHK-Cu into Skincare
GHK-Cu can be integrated into an existing skincare routine, rather than replacing other products like retinols or vitamin C creams. It is thought to synergize with other treatments for aesthetic benefits.
13. Use GHK-Cu for Post-Sun Damage
Topical GHK-Cu may help alleviate photo damage after sun exposure. While not a replacement for sunscreen, it could be used as a post-sun application for individuals concerned about UV-induced skin damage.
14. Use GLP-1s with Lifestyle Support
When using GLP-1 medications for weight loss, combine them with comprehensive lifestyle modifications, including dietary advice and exercise programs. This approach can help mitigate potential side effects like depression or low energy, which may arise from insufficient nutrient or electrolyte intake due to reduced appetite.
11 Key Quotes
So scientifically, I would say it's one of the languages of the human body, right?
Dr. Abud Bakri
The best way to look at it is, you know, as humans, we've been looking for medicines in plants for thousands of years. And in the last, let's say, 150 years, we've been looking for medicines in cells.
Dr. Abud Bakri
There's no such thing as American-made peptides. It gets finished here. So the API- They're all from China. Everything's from China.
Dr. Abud Bakri
There's two possibilities. Either BPC is as amazing as we think it is, and it's unfortunate that millions of people don't have access to it. Or BPC is actually either ineffective or harmful to people, and millions of people are injecting it right now by buying it through online sources. Both cases are very bad endpoints.
Dr. Abud Bakri
I'm not so concerned that these actual compounds are necessarily harming people. I worry that the way they're arriving to people is harming them. And we're going to miss out on that first possibility that these are very useful.
Andrew Huberman
It should be between the physician and the patient. Like, hey, there's this promising compound. It's not FDA approved. We have minimal to no human data, but we have ANIC data. Are you willing to try this on yourself? And we'll monitor you. We'll have clear endpoints for that. That should be what this looks like, a frank discussion between a physician and a patient.
Dr. Abud Bakri
The biggest distributors of peptides have been these organ meat companies, because each organ has a signature peptide that comes out of it.
Dr. Abud Bakri
The pineal gland, it seems from Cavinson's work that the decrease in pineal gland function with aging is more of a physiologic than an anatomic problem.
Dr. Abud Bakri
We've screwed up a lot of times as clinicians through different grotesques abuses of our, you know, trust. But we've done, you know, interventions or drugs that weren't the most efficacious.
Dr. Abud Bakri
The veterinary community has been very open. I injected my previous dog. Yeah. With testosterone later in life. And I expected the vets to come after me with pitchforks. And I got calls that said, we would love to prescribe this.
Andrew Huberman
The reality is it's here. There is no pre-GLP-1 world for us as clinicians, as health enthusiasts. We're in a post-GLP-1 world, and everything kind of dictates downstream from that.
Dr. Abud Bakri
3 Protocols
Thymus Regeneration Protocol (TRIM Trial)
Dr. Abud Bakri (describing Dr. Greg Fahey's work)- Administer a cocktail of growth hormone, metformin, and DHEA.
- Continue treatment for 12 months.
Immunity Augmentation Protocol (Prophylactic)
Dr. Abud Bakri (personal use)- Inject Thymosin Alpha-1 at a dose of 2.5 milligrams.
- Administer twice a week, time agnostic.
Celebrity Trinity Stack (Theoretical)
Dr. Abud Bakri- Utilize GLP-1s for insulin sensitivity and fat loss.
- Incorporate growth hormone or GHRH for muscle gain and youthful appearance.
- Add androgen modulation therapies (e.g., TRT) for enhanced body composition.