In 2006, healthy men aged 20 to 40 went to bed in a research unit with a line in one arm. Every twenty minutes, through twelve hours of darkness, someone drew blood. The question was what one injection had done to their growth hormone.

Those twelve hours, plus a second set of trials from the same year, are the whole human record for CJC-1295. The peptide now reaching Canadian mailboxes has 49 days of evidence behind it, all twenty years old.

Both studies measured blood. Neither measured a wrinkle, a deadlift or a birthday. The one effect they did pin down is the one she should think hardest about.

The claim on the vial How strong is the evidence
It raises IGF-1 Established. Up to threefold
It builds muscle or firms skin Experiential. Nobody has looked
It slows ageing No trial of any length has tested it

Do anti-aging peptides actually work?

Ipamorelin and its cousins are sold to push IGF-1 up, and they do. That is the one thing the trials settled.

In 2010 researchers pooled 17 long-running studies: 4,790 women who developed breast cancer, and 9,428 who did not. Those in the top fifth for IGF-1 carried about a 28 per cent higher chance than those at the bottom. The link showed up only in hormone-driven tumours, which are the common kind.

Those were natural levels, measured years before any diagnosis. Nobody has run that work in women paying to raise them with a needle. A missing study is not a clean bill of health.

The deed the whole business trades on

All of it rests on twelve men in Milwaukee, aged 61 to 81. In July 1990 the New England Journal of Medicine reported that six months of injections raised their lean mass and dropped their fat. The paper's own conclusion is one flat sentence about body composition. Nobody in it was sold anything.

Is it legal to order peptides online in Canada?

No. Health Canada treats injectable peptides as prescription drugs. Not one of the anti-aging ones is authorized here. Its advisory of 9 April 2026 names fifteen, including both peptides above.

The "For Research Use Only" sticker does no work. The wording is flat: "This type of labelling does not make these products legal or exempt from regulatory requirements." Federal guidance goes further. Residents generally may not import prescription drugs at all, by hand or by post. Parcels that fail inspection "will be refused entry or seized". A Quebec court closed one Canadian seller for good in June 2026.

What turns up inside the vials reads like a sweep of a workshop floor: solvents, heavy metals, glass, bacterial toxins. The regulator's own list of harms ends on cancerous tumours.

The other sleep study, and the free version

In 1968, eight volunteers slept in a different lab for 38 nights. They were wired to an EEG, catheters in their arms. Seven of the eight released a surge of growth hormone the moment deep sleep arrived, and it ran for up to three and a half hours.

Delay the sleep and the surge waits. Wake them, let them drop off again, and a second one comes. Her largest pulse of it is nightly, free and already hers.

What sits on top is unglamorous, and well tested. In 1,863 people, extra protein added to the muscle that resistance training built, up to about 1.6 grams per kilogram a day. A scoop of unflavoured whey carries 24 grams of it. The lifting is the part that works. The powder helps it along.

Creatine monohydrate is among the most studied powders in sport, licensed here to help maintain performance in short, hard effort. A tub runs about fifteen dollars. And the peptides she can legally buy sit in a cream, doing modest work on the look of fine lines.

Two sleep studies, four decades apart, wired to the same question. Only one can be repeated tonight, in her own bed, for nothing.

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Frequently asked questions

What about Epitalon and NAD+ injections?

Health Canada's April 2026 advisory names both among unauthorized injectable peptide drugs, alongside Melanotan, TB-500, MOTS-C and DSIP. It adds that many other unauthorized peptide drugs exist and should all be avoided. None holds Canadian market authorization.

Can a Canadian doctor prescribe peptides for anti-aging?

Injectable peptides are prescription drugs in Canada, but there is no authorized anti-aging product to prescribe. A prescription does not make an unapproved vial legal to import. Ask your physician what is authorized for your actual concern instead.

How do I check whether something injectable is legal here?

Look for an eight-digit Drug Identification Number on the label, then search it in Health Canada's Drug Product Database. No number means no authorization. Buy prescription drugs only from a licensed Canadian pharmacy.

This article is journalism, not medical advice. Talk to your physician or nurse practitioner before starting or stopping anything, and sooner if you have used an unauthorized injectable peptide and feel unwell.

Read next

Sources

  • Takahashi Y, Kipnis DM, Daughaday WH. "Growth hormone secretion during sleep." Journal of Clinical Investigation, September 1968. Retrieved via PubMed. DOI
  • Rudman D et al. "Effects of human growth hormone in men over 60 years old." New England Journal of Medicine, 5 July 1990. Retrieved via PubMed. DOI
  • Teichman SL et al. "Prolonged stimulation of growth hormone and insulin-like growth factor I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults." Journal of Clinical Endocrinology and Metabolism, 2006. Retrieved via PubMed. DOI
  • Ionescu M, Frohman LA. "Pulsatile secretion of growth hormone persists during continuous stimulation by CJC-1295, a long-acting GH-releasing hormone analog." Journal of Clinical Endocrinology and Metabolism, 2006. Retrieved via PubMed. DOI
  • Endogenous Hormones and Breast Cancer Collaborative Group. "Insulin-like growth factor 1, IGF binding protein 3, and breast cancer risk: pooled individual data analysis of 17 prospective studies." Lancet Oncology, 2010. Retrieved via PubMed. DOI
  • Morton RW et al. "A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults." British Journal of Sports Medicine, 2018. Retrieved via PubMed. DOI
  • Health Canada. "Think twice before injecting peptides bought online: unauthorized products can seriously harm you." Public advisory RA-81874, 9 April 2026. recalls-rappels.canada.ca
  • Health Canada. "Bringing health products into Canada for personal use (GUI-0116)." Modified 13 July 2026. canada.ca
  • Powers JP. "Peptides in Canada: regulatory reality is catching up with the hype." Gowling WLG, 9 September 2026. gowlingwlg.com