Doctor Explains Top Peptides: Tesamorelin, Sermorelin, Hexarelin, CJC-1295, Ipamorelin and more.
A physician walks through seven growth hormone releasing peptides, says which he uses or avoids and why, then ranks them from weakest to strongest and warns against stacking.
With Dr. Michael Mueller (Mayo Clinic trained family physician with a background in longevity and wellness)
Key moments
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- 0:00Introduction and scope of the videoMueller says he will cover the strongest and weakest growth hormone peptides, along with cost, benefits and risks. He stresses seeing a physician and says the content is for education only.
- 0:59Why he uses these peptidesHe explains that these peptides prompt the pituitary to release more growth hormone rather than supplying it directly. He lists benefits he associates with growth hormone, including less fat, more muscle, skin and pain.
- 2:51Sermorelin as the entry optionHe calls sermorelin safe, short acting and FDA approved. He describes injecting it before bed and not eating afterward, since he says food can blunt the release.
- 4:22CJC-1295 and the DAC questionMueller explains that DAC extends the release to 6 to 8 days and says he avoids it. He prefers plain CJC-1295 with a half life of about 30 minutes, injected once to a few times daily.
- 6:49Ipamorelin and ghrelin hungerHe describes ipamorelin as a mild, selective option that mimics ghrelin and can raise appetite. He says some of his patients reported being extremely hungry on it.
- 8:42GHRP-6 and GHRP-2 side effectsHe says both are more potent, drive strong hunger and raise cortisol and prolactin. He mentions mood swings and fluid retention as things he has heard about GHRP-2.
- 10:13Hexarelin and pituitary desensitizationMueller calls hexarelin highly potent and says overuse could leave the pituitary unresponsive. He adds that it also raises prolactin and cortisol.
- 11:34Tesamorelin for visceral fatHe describes tesamorelin as an FDA approved growth hormone releasing hormone analog that he favors for visceral fat. He says it is the priciest of the group.
- 13:14Ranking from weakest to strongestHe ranks sermorelin weakest, then CJC-1295 without DAC, tesamorelin, ipamorelin, GHRP-6 and GHRP-2 together, and hexarelin strongest.
- 14:37How he uses them and why not to stackHe lists which peptides he uses for fat, recovery and anti-aging in his practice. He then argues against combining them, saying an overstimulated pituitary may shut down.
What the video says
Dr. Michael Mueller, a Mayo Clinic trained family physician with a background in longevity and wellness, goes through the growth hormone releasing peptides he uses, or chooses not to use, in his practice. He describes them as compounds that prompt the pituitary to release a little extra growth hormone, not as injected growth hormone. He says several times that anyone considering a peptide should involve a physician, and he frames the video as education, not medical advice.
He takes the peptides one at a time. Sermorelin is his entry level choice: he calls it short acting and FDA approved, and describes taking it about 20 minutes before bed with no food beforehand or afterward. For CJC-1295 he explains the DAC modification, which he says stretches the growth hormone signal to 6 to 8 days. He prefers the version without DAC, with a half life of about 30 minutes, because he thinks the downsides of DAC outweigh its benefits. He says ipamorelin mimics ghrelin, the hunger hormone, so it can raise appetite, but he calls it selective and clean.
Mueller is more critical of the stronger options. He says GHRP-6 and GHRP-2 produce intense hunger and raise cortisol and prolactin, so he rarely or never prescribes them. He calls hexarelin highly potent and warns that heavy use can desensitize the pituitary. Tesamorelin, which he describes as a 44 amino acid analog of growth hormone releasing hormone and FDA approved, is his pick for visceral fat. He also says it is the most expensive of the group.
Near the end he ranks the group from weakest to strongest and lists how he uses each in practice, mostly for recovery, anti-aging, muscle and abdominal fat. He closes by arguing against stacking these peptides, saying the brain may shut down its own signaling if overstimulated. Everything comes from his clinical experience. He cites no studies and gives no dosing beyond timing and injection frequency.
On each compound
Sermorelin2:36
Mueller calls sermorelin his entry level growth hormone peptide, describing it as short acting, FDA approved and taken before bed without food. He says he uses it a lot for anti-aging and ranks it the weakest of the group.
See how your DNA reads SermorelinCJC-12954:22
Mueller says he uses CJC-1295 without DAC, which he describes as having a half life of about 30 minutes. He says DAC extends release to 6 to 8 days but that he thinks the negatives outweigh the positives. He uses it for recovery and anti-aging.
See how your DNA reads CJC-1295Ipamorelin6:49
According to Mueller, ipamorelin is a mild, selective peptide that gives a fairly regular growth hormone pulse and mimics ghrelin. He says it can increase hunger, and that some patients reported being very hungry on it.
See how your DNA reads IpamorelinGHRP-68:42
Mueller says GHRP-6 is stronger than ipamorelin, makes people very hungry and raises prolactin and cortisol. He says that is why he rarely uses it.
See how your DNA reads GHRP-6GHRP-29:20
Mueller describes GHRP-2 as a second generation, more potent GHRP that produces a large growth hormone pulse. He says it spikes cortisol and prolactin, and that he has heard of mood swings and fluid retention, so he does not use it.
See how your DNA reads GHRP-2Hexarelin10:13
Mueller calls hexarelin a highly potent peptide and ranks it the strongest. He warns it may desensitize the pituitary and also raises prolactin and cortisol, and says he really does not use it.
See how your DNA reads HexarelinTesamorelin11:34
Mueller describes tesamorelin as a 44 amino acid analog of growth hormone releasing hormone, FDA approved, and one of his favorites for burning visceral fat. He calls it effective and very safe but the most expensive of the group.
See how your DNA reads Tesamorelin“You should never stack these things together.”
What this video doesn’t settle
- Mueller cites no studies, trials or data for his claims about potency, safety or benefits, so they rest on his own practice experience.
- The strength ranking is his opinion, and it is not fully consistent, since he calls hexarelin probably the strongest and also lists tesamorelin as an elite option.
- He mentions side effects of DAC, GHRP-6 and GHRP-2 only in general terms and gives no doses, so the video does not establish how these peptides compare at specific amounts.
Questions this video answers
Why does Dr. Mueller avoid CJC-1295 with DAC?
Mueller says DAC acts like an anchor that stretches the growth hormone signal over 6 to 8 days. He says he thinks the potential negative effects rise a great deal with DAC and that plain CJC-1295 is the better choice. He does not list the specific side effects in this video.
How does Dr. Mueller rank growth hormone peptides from weakest to strongest?
He puts sermorelin first as the weakest, followed by CJC-1295 without DAC, tesamorelin, ipamorelin, GHRP-6 and GHRP-2 (similar in strength), and hexarelin as the strongest. He notes that tesamorelin is valued mainly as a visceral fat specialist.
Does Dr. Mueller say ipamorelin increases hunger?
Yes. He says ipamorelin mimics ghrelin, the hunger hormone, so it can raise appetite and would not suit someone trying to lose weight. He adds that some data suggest the effect is modest, though some of his patients reported being extremely hungry.
Why does Dr. Mueller say not to stack growth hormone peptides?
He argues that the hypothalamus and pituitary respond to overstimulation by shutting things down, which he says can cause trouble. He names combinations such as tesamorelin with ipamorelin or hexarelin with tesamorelin as examples to avoid.
Which peptide does Dr. Mueller prefer for visceral fat?
He says tesamorelin, which he describes as strong, effective and very safe in his experience, though costly. He says he uses it to target fat around the abdomen and organs.
Video by Doctor Michael Mueller on YouTube, embedded as published. The summary is written by PeptidesDNA from the video; every claim in it is the speaker’s. Not affiliated with or endorsed by the creator. Not medical advice.
