Peptides Are A Scam

Greg DoucetteCoach, Pro bodybuilder and coach23 minMay 2026172K views

Greg Doucette reacts to a creator's 50-day peptide experiment, critiquing the sourcing, mixing and injection choices while concluding the strength gains were probably real.

With Manuel Enrique

Key moments

Tap a moment to play the video from there.

  1. 0:00Setting up the 50-day experimentDoucette introduces Manuel Enrique's challenge of taking peptides for 50 days and says he believes the creator was natural beforehand.
  2. 2:02Where the peptides came fromDoucette says buying without a compounding pharmacy leaves buyers unable to know whether the product is real.
  3. 2:32Oral BPC-157 criticizedDoucette says swallowing BPC-157 is not equivalent to injecting it and would not be expected to speed recovery from training injuries.
  4. 4:33Day-two strength gains questionedDoucette argues that getting stronger on day two is a good day or placebo, since the compounds would not have kicked in yet.
  5. 8:59Mixing GHK-Cu with CJC-1295Doucette says GHK-Cu should be kept in a separate syringe, but that mixing and injecting soon after would lose some potency, not all of it.
  6. 10:12Dose math and vial concentrationHe warns that injection volumes depend on each vial's concentration and that miscalculating can cause problems, citing a retatrutide anecdote.
  7. 13:45Injecting GHK-Cu into the faceDoucette objects to face injections, syringe reuse and the resulting bruise, saying GHK-Cu is systemic and the creator admitted to not knowing what he was doing.
  8. 16:28Diet, cheat meals and calorie burnHe defends the occasional off-plan meal and disputes the creator's claim that very heavy lifting best burns off extra calories.
  9. 18:49Verdict on the strength resultsDoucette credits the bench increase from 100 to 110 lb for five reps mainly to CJC-1295 with ipamorelin and says the creator is no longer natural.

What the video says

This is a reaction video. Greg Doucette watches a 50-day self-experiment by Manuel Enrique, who took oral BPC-157, GHK-Cu, and CJC-1295 with ipamorelin to see whether peptides are a scam. Doucette pauses the footage to comment. His message is that the experiment was loosely designed, but the outcome was not meaningless.

Much of the first half is criticism of how the experiment was run. Doucette says the creator never established where the peptides came from, and that without a compounding pharmacy such as the one he names you cannot know whether a product is real. He says oral BPC-157 is not the same as injecting it and would not be expected to speed injury recovery, though it might help the gut. He also argues that a strong workout on day two proves nothing, and that the creator's confidence may have shaped his training. Illness during the trial, in Doucette's view, cannot be pinned on the peptides or on anything else.

The middle section covers mistakes the creator made. Doucette says GHK-Cu should not be mixed in the same syringe as CJC-1295, but adds that injecting within about 5 minutes would lose perhaps 20% of potency, not all of it. He stresses checking dose math against each vial's concentration, and says missing a day or two a week would not ruin results. He calls injecting GHK-Cu into the face unnecessary because, as he puts it, the compound acts systemically. He also objects to reusing a syringe and to the bruise that followed.

On results, Doucette doubts that appetite and leanness came from the peptides and credits diet and training. He is more persuaded by the strength numbers: bench 100 lb for five reps rising to 110 lb for five, at a lower bodyweight of 184. He attributes that mainly to CJC-1295 with ipamorelin, thinks oral BPC-157 did little, and says GHK-Cu would not affect strength. He notes that anyone using these compounds is no longer natural and could fail a drug test. The video also contains sponsor and product promotions and an off-topic aside about burning calories.

On each compound

BPC-1572:32

Doucette says the creator took BPC-157 orally, which he argues is not the same as injecting it and would not be expected to help injury recovery. He allows it might help gut health, and concludes it essentially did nothing for the strength results.

See how your DNA reads BPC-157

GHK-Cu3:32

Doucette says he takes GHK-Cu himself and that there is science behind it for skin, hair and nails, but that it has nothing to do with strength or appetite. He criticizes mixing it with other compounds and injecting it into the face.

See how your DNA reads GHK-Cu

CJC-12953:32

According to Doucette, CJC-1295 with ipamorelin can raise growth hormone and IGF, which takes time to show effects. He credits the creator's strength gain mainly to this pairing and says it means the creator is no longer natural.

See how your DNA reads CJC-1295

Ipamorelin7:38

Doucette says ipamorelin taken with CJC-1295 can improve sleep, recovery and strength, so the creator's reported results make sense to him. He doubts effects could be felt on day one.

See how your DNA reads Ipamorelin

“you're playing Russian roulette with your health”

What this video doesn’t settle

  • It is one person's 50-day self-experiment with no control group, so the results cannot separate peptide effects from training, dieting and expectation.
  • The creator never verified the source or contents of his peptides, so the video cannot say what he actually injected or swallowed.
  • Doucette's assessments of what each compound did are his own opinion, and he cites no studies or measurements such as growth hormone or IGF levels.

Questions this video answers

Does Greg Doucette think peptides are a scam?

No, not entirely. He says that if the peptides are real and trusted, they should offer some benefit, and he believes the creator's strength gain came mainly from CJC-1295 with ipamorelin. He also says oral BPC-157 probably did little and GHK-Cu would not affect strength.

What does Doucette say about taking BPC-157 orally?

He says swallowing BPC-157 is not the same as injecting it and would not be expected to help someone recover from gym injuries. He allows that it could possibly help with gut problems.

Can GHK-Cu be mixed with CJC-1295 in one syringe, according to Doucette?

He says GHK-Cu should be injected separately in its own needle. He adds that if the mix is injected within about 5 minutes, he would expect perhaps a 20% loss of potency, not a total waste.

Why does Doucette say not to inject GHK-Cu into the face?

He says GHK-Cu acts systemically, so injecting the area you want to change is not how it works. He also criticizes the creator for reusing a syringe and notes the bruise and swelling, saying this is not something to do on your own.

How much stronger did the creator get on peptides in this video?

The creator went from benching 100 lb for five reps to 110 lb for five, while weighing 184 after losing 27 lb of body fat, according to Doucette. Doucette calls that a 10% improvement and says it is significant.

Video by Greg Doucette 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.

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Before you decide

BPC-157 and GHK-Cu, and the rest, read against your own DNA.

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