Peptides Mentioned by Dr. Alex Tatem on The Diary of a CEO
Steven Bartlett's episode with urologist Dr. Alex Tatem moved quickly between regulation, clinical anecdotes and emerging biology. This audit covers only compounds that can be verified in the episode itself, and separates Tatem's descriptions from the state of human evidence.
The Peptide Expert: Big Pharma Are Hiding This Powerful Peptide From You!
Guest: Dr. Alex Tatem · Released April 20, 2026
Watch the official DOAC uploadHow this article was verified
The official DOAC YouTube episode confirms Dr. Alex Tatem as the guest and April 20, 2026 as the release date. Its public captions support the compound list, but several names are rendered phonetically—for example, “TV 500,” “MOTC,” “D-Sip,” “Epithelon,” “C-Max,” and “Ippelmoralin.” The identifications below are limited to passages where the surrounding explanation makes the intended standard compound name clear.
Compounds discussed in this episode
Speaker claims below are paraphrases, not endorsements or quotations. Scientific context is separated from the speaker's experience or opinion.
01BPC-157
What the speaker said
Tatem described BPC-157 as a gut- and injury-repair candidate, specifically pointing to investigation in ulcerative colitis. Later, when discussing his own troublesome shoulder, he said he would have welcomed BPC-157 and TB-500 in hopes of speeding recovery. That is a clinician's opinion and personal hypothetical—not a trial result.
Scientific Context
Published support is dominated by cell and animal work, including tendon and gastrointestinal models. There is no established FDA-approved BPC-157 treatment and high-quality controlled human efficacy evidence remains inadequate.
Where to buy for laboratory research
BPC-157 at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
02TB-500
What the speaker said
The captions say “TV 500,” but the vial context and Tatem's later clear reference to “TB 500” identify the compound. He called it a counterpart to BPC-157 and attributed improved blood flow and delivery of repair cells to injured tissue to it.
Scientific Context
TB-500 is discussed as a thymosin beta-4-related fragment; it must not be treated as interchangeable with full-length thymosin beta-4. Tissue-repair findings are largely preclinical, and recovery claims lack robust controlled human trials.
Where to buy for laboratory research
TB-500 at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
03KPV
What the speaker said
Tatem named KPV immediately after TB-500 and associated it with angiogenesis and tissue repair. The episode did not present a controlled patient outcome for KPV.
Scientific Context
KPV is an alpha-MSH-derived tripeptide studied mainly in experimental inflammation and barrier models. Human therapeutic evidence is sparse, so broad repair claims should be treated as preliminary.
Where to buy for laboratory research
KPV at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
04MOTS-C
What the speaker said
The automated transcript renders the name “MOTC.” Tatem relayed the patient nickname “exercise in a vial” and attributed greater exercise tolerance and energy-pathway activity to it. That framing is anecdotal and mechanistic, not proof of a human performance benefit.
Scientific Context
MOTS-C is a mitochondria-derived peptide with encouraging metabolic and exercise findings in laboratory and animal research. Limited human observational work does not establish that administering it improves VO2 max or exercise capacity.
Where to buy for laboratory research
MOTS-C at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
05DSIP
What the speaker said
In a rapid list, Tatem grouped DSIP with Epitalon and Semax, assigning DSIP and Epitalon roles in sleep and recovery. The transcript's “D-Sip” spelling is phonetic.
Scientific Context
Delta sleep-inducing peptide has an old, inconsistent and small human literature. Its name does not itself establish a clinically reliable sleep effect, and modern confirmatory trials are lacking.
Where to buy for laboratory research
No exact DSIP product page was verified at Base Peptides or Peptide Stock at review time. No substitute or near-match is linked.
06Epitalon
What the speaker said
Tatem grouped Epitalon with DSIP in the sleep-and-recovery portion of the list. He did not present a specific trial or patient outcome in this passage.
Scientific Context
Claims about sleep, telomerase and longevity rely heavily on laboratory, animal and limited regional studies. There is no FDA-approved anti-aging indication and no large confirmatory longevity trial.
Where to buy for laboratory research
No live exact Epitalon product page was verified at Base Peptides or Peptide Stock at review time. No substitute or near-match is linked.
07Semax
What the speaker said
The captions repeatedly render the name “C-Max,” but the cognitive-peptide context supports Semax. Tatem presented it as an option associated with thinking and cognition; the episode did not provide controlled evidence for healthy users.
Scientific Context
Semax has Russian clinical and preclinical literature, including neurologic settings, but is not FDA-approved and the evidence cannot be generalized to routine cognitive enhancement.
Where to buy for laboratory research
Semax at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
08GHK-Cu
What the speaker said
Tatem referred to GHK-Cu while discussing his rosacea and said many people report skin benefits. He framed it as something that could potentially help a patient like him, rather than reporting a personal result.
Scientific Context
Copper-peptide research includes wound, fibroblast and cosmetic-skin work, but formulation matters. Evidence from topical products cannot automatically support injected or systemic use.
Where to buy for laboratory research
GHK-Cu at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
09Semaglutide
What the speaker said
Tatem named semaglutide while comparing GLP-1 medicines and their receptor profiles. His discussion treated it as a prescription drug, not a research-only wellness peptide.
Scientific Context
Semaglutide has large randomized-trial programs and FDA-approved indications, with product-specific labeling, contraindications and medical oversight. Those data do not validate unapproved research-vial versions.
Where to buy for laboratory research
No exact research product is linked because the episode discussed the approved active drug; a research listing could be confused with prescription Ozempic or Wegovy. No substitute or near-match is linked.
10Tirzepatide
What the speaker said
Tatem displayed a Mounjaro pen and described a patient who lost substantial weight while also exercising and changing diet. The sperm-count improvement he reported was one patient anecdote and cannot establish causation.
Scientific Context
Tirzepatide is an FDA-approved GIP/GLP-1 medicine supported by randomized diabetes and obesity trials. Fertility improvement is not established by this anecdote.
Where to buy for laboratory research
No research-vial listing is linked because the episode discussed branded prescription Mounjaro and clinical care. No substitute or near-match is linked.
11IGF-1 LR3
What the speaker said
Tatem held up IGF-1 LR3 as the closest example when asked whether a peptide could add muscle, but immediately said it was not a substitute for training and would not independently add major lean mass.
Scientific Context
IGF-1 LR3 is a long-acting research analogue, not an FDA-approved muscle-building treatment. Human safety and efficacy data for physique use are inadequate, with class-level concerns around glucose and growth signaling.
Where to buy for laboratory research
No exact IGF-1 LR3 product page was verified at Base Peptides or Peptide Stock at review time. No substitute or near-match is linked.
12Selank
What the speaker said
Tatem described Selank as a calming peptide used before sleep and connected it to restorative delta-wave sleep. The episode did not cite a controlled trial for this use.
Scientific Context
Published work is limited and largely regional; it does not establish a reliable sleep treatment in broad populations. Selank is not FDA-approved.
Where to buy for laboratory research
No exact Selank product page was verified at Base Peptides or Peptide Stock at review time. No substitute or near-match is linked.
13Tesamorelin
What the speaker said
Tatem accurately identified tesamorelin as a commercially available prescription peptide and emphasized its effect on visceral abdominal fat, while warning that benefits may reverse if underlying habits do not change.
Scientific Context
Tesamorelin is FDA-approved for reducing excess abdominal fat in adults with HIV and lipodystrophy—not for general belly-fat loss or bodybuilding. The approved indication is narrower than the episode's informal examples.
Where to buy for laboratory research
Tesamorelin at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
14Melanotan II
What the speaker said
Tatem explained the tanning effect of Melanotan II and explicitly raised concern that stimulating melanocortin pathways could present melanoma-related risk. The exchange also included humor that should not be mistaken for medical guidance.
Scientific Context
Melanotan II is unapproved, and regulators have warned consumers about unlicensed tanning injections. Product identity and longer-term dermatologic risk are major uncertainties.
Where to buy for laboratory research
No exact Melanotan II product page was verified at Base Peptides or Peptide Stock at review time. No substitute or near-match is linked.
15PT-141 (bremelanotide)
What the speaker said
Tatem called PT-141 a derivative of Melanotan II and connected it with sexual effects without tanning. He noted that a commercial prescription product exists.
Scientific Context
Bremelanotide is FDA-approved as Vyleesi for acquired, generalized hypoactive sexual desire disorder in certain premenopausal women. That label does not support general enhancement claims.
Where to buy for laboratory research
No research listing is linked because the episode explicitly discussed a commercially approved prescription active ingredient. No substitute or near-match is linked.
16Retatrutide
What the speaker said
Tatem described retatrutide as an investigational triple-receptor agonist and relayed enthusiasm about weight and liver-fat findings. He also acknowledged that people were already obtaining research versions before commercialization.
Scientific Context
Retatrutide remains investigational. Phase 2 results are promising, but it is not FDA-approved and trial findings cannot authenticate or establish the safety of products sold online.
Where to buy for laboratory research
Retatrutide at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
17CJC-1295
What the speaker said
Tatem paired CJC-1295 with ipamorelin and described complementary growth-hormone-releasing mechanisms. The episode did not clearly specify DAC versus no-DAC.
Scientific Context
Early studies of DAC-linked CJC-1295 show prolonged GH/IGF-1 activity, but broad claims about skin, hair, body composition or anti-aging outcomes are not established.
Where to buy for laboratory research
The transcript does not resolve the molecular form. Base Peptides' live page is specifically CJC-1295 DAC, so it is not substituted for an unspecified mention. No substitute or near-match is linked.
18Ipamorelin
What the speaker said
Automated captions render the name several ways, but Tatem's description of a ghrelin-receptor agonist paired with CJC-1295 identifies ipamorelin. He characterized the combination as a potent way to stimulate growth-hormone release.
Scientific Context
Growth-hormone release is a pharmacologic effect, not proof of better recovery, appearance or longevity. Ipamorelin is not FDA-approved for those outcomes.
Where to buy for laboratory research
Ipamorelin at Base Peptides — verified exact-name product page. This editorial listing is not a guest endorsement and is not a recommendation for human use.
19Somatropin (human growth hormone)
What the speaker said
Tatem identified somatropin as growth hormone and described both desired effects and serious risks, including acromegalic changes, insulin resistance and concern about stimulating an existing cancer.
Scientific Context
Somatropin is an FDA-approved prescription biologic for specific deficiency and growth disorders. Anti-aging and bodybuilding use fall outside those indications and carry substantial endocrine risk.
Where to buy for laboratory research
No research supplier listing is appropriate for a prescription biologic discussed by its established drug name. No substitute or near-match is linked.
20Oxytocin
What the speaker said
Oxytocin appeared briefly in Tatem's explanation of compounds that can currently be prescribed. The episode did not develop a specific benefit claim or patient result around it.
Scientific Context
Oxytocin is an approved prescription hormone for obstetric uses. A passing mention does not support unrelated wellness or behavioral uses.
Where to buy for laboratory research
No research supplier listing is provided for this prescription hormone. No substitute or near-match is linked.
Sources and limitations
- Official Diary of a CEO episode — primary source for the episode, date, speakers and transcript
- FDA: unapproved drugs — regulatory context for products without an approved indication
- PubMed review of BPC-157 soft-tissue research — illustrates the predominantly preclinical evidence base
Research and educational use only. Most compounds discussed here are not FDA-approved to treat injury, improve performance, or extend lifespan. Laboratory supplier links are editorial references only. Nothing here is medical advice, a dosing guide, or a recommendation for human use.