Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman and Dr. Bakri break peptides into categories, chiefly those with known receptors (like GLP-1 drugs) versus those without (like BPC-157), and trace each compound's history, mechanism and evidence base. They cover BPC-157 for tissue/gut repair, the Russian 'bioregulator' peptides epitalon and pinealon, thymic peptides (thymosin alpha-1, TB-500, thymulin) for immunity and aging, GHK-Cu for skin and collagen, and growth-hormone secretagogues. A large portion examines GLP-1s (semaglutide, tirzepatide, retatrutide) for weight loss and metabolic health. Throughout, the discussion stresses that most human data is thin or comes from single labs, that the gray-market supply chain is the real danger, and that peptide use should be physician-supervised.

• Bakri says compounding-pharmacy clinicians often pocket the markup between the pharmacy's price and what they charge patients, and urges patients to ask the doctor what they paid.
  00:32:32
• All peptide raw materials (the API) come from China; there is no such thing as an American-made peptide.
  00:35:11
• Bakri estimates $5-10 billion was spent on gray-market 'research-only' peptides in the US in 2025.
  00:38:37
• Bakri recounts injecting BPC-157 locally into a torn tricep and healing in ~3 weeks versus a typical 3-month recovery.
  00:54:46
• Huberman admits he uses pinealon a few times a month to roughly double his REM sleep, with effects lingering on off-nights.
  01:07:09
• Huberman says sermorelin spiked his PSA (prostate-specific antigen), so he stopped it immediately.
  02:11:38
• Bakri describes self-experimenting with a 1mg Ozempic dose and suffering 'projectile vomiting' through a hospital night shift.
  02:32:43
• The 'celebrity protocol' is a trinity stack of GLP-1, growth-hormone modulator and androgen therapy for rapid fat loss and muscle gain.
  02:14:12

• BPC-157 is a 15-amino-acid fragment of a larger ~40 kDa gut protein (BPC) isolated by a Croatian group in 1991; humans don't naturally make the 15-mer.
  00:07:12
• Animal studies gave 1,000x doses of BPC with no real adverse effects, so its LD50 is unknown, which blocks FDA approval.
  00:20:06
• Orally or rectally administered BPC-157 doesn't appear to go systemic; it wasn't detectable in the blood in trials.
  00:21:37
• More than half of the peptide market is female; 'soccer moms' have become major peptide affiliates.
  00:39:50
• Pinealon (EDR) is mislabeled; it actually derives from a cortex extract (cortexin), not the pineal gland, while epitalon is the pineal one.
  01:08:43
• The thymus is largest before puberty (baseball-sized in a baby) and shrinks under androgens, estrogens and corticosteroids after puberty.
  01:29:50
• GHK-Cu is high in youthful blood (~200 ng) and drops to the 60s by age 65; a properly formulated topical should be blue from the copper.
  01:51:32
• A $3 lymphocyte-to-monocyte ratio on a standard CBC can stratify disease risk, yet Bakri estimates ~0 of 100 US physicians use it that way.
  02:01:19
• GLP-1 was discovered in the saliva of the Gila monster.
  02:24:32
• Lilly is trying to push retatrutide above 40 amino acids to classify it as a 'biologic' for a far longer (~15-year) patent and to block compounding.
  02:34:48

Books, products and media the guest or host genuinely endorsed here — with the buy link.

Affiliate link — we may earn a commission at no extra cost to you.