No, peptides are not steroids. A peptide is a short chain of amino acids, the same building blocks that make up proteins. An anabolic steroid is a completely different kind of molecule: a fat-soluble ring structure built on the same four-ring skeleton as testosterone. They are made differently, they act on different receptors, and Canadian law treats them differently.
HGH (human growth hormone) is neither a small peptide nor a steroid. It is a full protein hormone, a single chain of 191 amino acids made by your pituitary gland. Research peptides such as ipamorelin, CJC-1295 and tesamorelin are not HGH either. They are “secretagogues”: they signal the pituitary to release its own growth hormone.
In Canada, anabolic steroids are controlled substances (Schedule IV of the Controlled Drugs and Substances Act). HGH is a prescription drug. Most peptides sold online are, in Health Canada’s words, unauthorized drugs. And in sport, all three groups are banned by WADA at all times.
Are peptides steroids? The quick answer
If you have searched “are peptides steroids,” you have probably heard someone at the gym, on TikTok or on a podcast lump BPC-157, “growth hormone peptides,” HGH and testosterone into one bucket called “gear.” That shortcut makes sense socially. Chemically, it is wrong.
Here is the one-sentence version you can repeat to a friend:
- Peptides are short chains of amino acids (think: a short string of beads).
- Anabolic steroids are ring-shaped molecules built from the cholesterol-derived steroid skeleton (think: a small, rigid, fat-soluble key).
- HGH is a large protein hormone, 191 amino acids long (think: a very long string of beads, folded into a specific 3D shape).
So the honest answer to “are peptides steroids?” is no. The more useful answer is that both can affect hormones, muscle and metabolism, and both carry real risks when used outside a doctor’s care. They just get there by very different routes. If you are new to the topic, our Peptides 101 guide covers the basics of what peptides are and how researchers use them.
What each one actually is, chemically
Peptides: short chains of amino acids
A peptide is what you get when a handful of amino acids are linked end to end. As McMaster University kinesiology professor Stuart Phillips put it in a 2026 analysis, peptides are simply “short chains of amino acids,” the building blocks of protein.[1] Some peptides are only two or three amino acids long. Others run to a few dozen.
Peptides are everywhere in medicine already. Semaglutide, the active ingredient in Ozempic and Wegovy, is a peptide drug.[1] So is tesamorelin (more on that below). Being a peptide doesn’t make a molecule safe, natural or legal; it only describes its structure.
A few examples you’ll see discussed online:
- Ipamorelin is a pentapeptide, meaning five amino acids.[2]
- CJC-1295 is a modified analogue of growth hormone-releasing hormone (GHRH), engineered to last much longer in the blood than natural GHRH.[3]
- Tesamorelin is a GHRH analogue approved as a prescription drug (Egrifta).[4]
Anabolic steroids: four-ring molecules related to testosterone
Anabolic-androgenic steroids (AAS) are a different class of chemical entirely. A 2022 review in Frontiers in Endocrinology explains that they get their name from the steroid nucleus: three six-carbon rings (A–C) and one five-carbon ring (D), fused together.[5] Testosterone is the body’s main natural anabolic steroid, and drugs like nandrolone, stanozolol and oxandrolone are its synthetic relatives.[5][6]
Because they are fat-soluble and small, steroids slip through cell membranes easily. That matters for how they work, which we’ll get to in a moment.
One quick clarification: the “steroids” your doctor prescribes for asthma or a rash (corticosteroids like prednisone) share the same ring skeleton but are a different family with different effects. When people ask “are peptides steroids,” they almost always mean anabolic steroids, so that’s what this article covers.
HGH: a 191-amino-acid protein hormone
Human growth hormone is made by the pituitary, a small gland at the base of the brain. It fuels growth in childhood and helps maintain tissues and organs through adult life, though output declines after puberty.[7]
Structurally, HGH is a protein. The Canadian product monograph for Pfizer’s Genotropin (a prescription somatropin) describes it as having 191 amino acid residues and a molecular weight of 22,124 daltons, with an amino acid sequence identical to growth hormone of pituitary origin.[8] For comparison, ipamorelin is five amino acids. HGH is a heavyweight.
So where does HGH sit? Technically, it is a “peptide hormone” in the broad sense that it is made of amino acids, which is why WADA files it under its “peptide hormones” category.[9] But in everyday conversation, when people say “peptides” they mean the short research compounds, not a full-size protein like HGH.
How each one works in the body
The clearest way to separate these three groups is to ask: what does the molecule plug into?
Steroids work inside the cell
Anabolic steroids act mainly through the androgen receptor. The Frontiers review describes how, in its unbound state, the androgen receptor sits mostly in the cell’s cytoplasm. When a steroid binds it, the receptor-steroid complex moves into the nucleus, where it switches specific genes on or off.[5] In other words, steroids directly reprogram what the cell is making. That is why their effects are broad, ranging from muscle to skin, hair, the prostate, mood and fertility.
Peptides mostly work from the outside
Most peptides are too large and water-loving to drift through cell membranes the way steroids do. Instead, they bind receptors on the cell surface, and that triggers a signalling cascade inside. Tesamorelin is a good documented example: Health Canada’s review of Egrifta notes that it binds and stimulates human growth hormone-releasing factor receptors, and that this releasing factor acts on the pituitary’s somatotroph cells to drive synthesis and pulsatile release of the body’s own growth hormone.[4]
HGH works on its own receptor, and through IGF-1
HGH is the hormone the secretagogues are trying to release. Once in the bloodstream, it acts on growth hormone receptors throughout the body and raises levels of insulin-like growth factor 1 (IGF-1), which carries much of its growth-promoting signal. You can see that link in the CJC-1295 study described below: when growth hormone went up, so did IGF-1.[3]
GH secretagogues vs HGH itself
This is where most of the confusion lives, so let’s slow down. “Secretagogue” just means “something that causes secretion.” A growth hormone secretagogue doesn’t contain growth hormone. It nudges the pituitary to release its own.
There are two main signalling routes researchers study:
Route 1: GHRH analogues (CJC-1295, tesamorelin)
Your hypothalamus naturally makes GHRH, which tells the pituitary to release growth hormone. CJC-1295 and tesamorelin are lab-made versions of that signal.
- CJC-1295: In a 2006 study in healthy adults, a single administration produced dose-dependent increases in average growth hormone of 2- to 10-fold lasting six days or more, and IGF-1 rose 1.5- to 3-fold for 9 to 11 days. Its estimated half-life was 5.8 to 8.1 days.[3] That long action is what sets it apart from natural GHRH, which the body clears quickly. CJC-1295 was never approved as a medicine.
- Tesamorelin: This is the one GHRH analogue that made it all the way to approval. Egrifta was developed by Theratechnologies of Montréal, approved by the US FDA on November 11, 2010 to reduce excess abdominal fat in people with HIV-associated lipodystrophy,[10] and authorized by Health Canada on April 29, 2014 for excess visceral fat in treatment-experienced adults with HIV and lipodystrophy.[4] (A US company, Future Pak, completed its acquisition of Theratechnologies in September 2025.[11]) It is a prescription medicine for that specific indication, not a general “anti-aging” or physique drug.
For a side-by-side of these compounds, see CJC-1295 vs tesamorelin vs ipamorelin, and for the approved drug in depth, What is tesamorelin?
Route 2: ghrelin-receptor agonists (ipamorelin)
The second route runs through the growth hormone secretagogue receptor, often called the ghrelin receptor. Ipamorelin was described in a 1998 paper as “the first selective growth hormone secretagogue.” In animal studies it released growth hormone with potency similar to the older peptide GHRP-6, but, unlike GHRP-6 and GHRP-2, it did not raise ACTH or cortisol, even at doses far above those needed for growth hormone release.[2] That selectivity is why it attracted research interest. It was never approved as a drug. Researchers often discuss it alongside CJC-1295; we cover that pairing in CJC-1295 and ipamorelin.
Why “secretagogue” does not mean “safe HGH”
You’ll often read that secretagogues are a “natural” or “safer” alternative to HGH because they work through the body’s own feedback loops. There’s a reasonable scientific idea in there: a pituitary that is being stimulated can still respond to the body’s brakes, whereas injected HGH bypasses the pituitary entirely. But that is a hypothesis, not a proven safety advantage. Outside tesamorelin’s approved use, the long-term human data on these compounds is thin, and the products sold online are, by Health Canada’s account, unassessed for quality.[12]
Big comparison table: peptides vs steroids vs HGH
| Research peptides (e.g. ipamorelin, CJC-1295) | Anabolic steroids (e.g. testosterone, nandrolone) | HGH (somatropin) | |
|---|---|---|---|
| What it is | Short chain of amino acids | Four-ring steroid molecule | Protein hormone, 191 amino acids |
| Size | Small (ipamorelin: 5 amino acids) | Very small, fat-soluble | Large (about 22 kDa) |
| Main target | Cell-surface receptors (GHRH receptor, ghrelin receptor) | Androgen receptor inside the cell, acting on genes | Growth hormone receptor; raises IGF-1 |
| Relationship to growth hormone | Secretagogues: prompt the pituitary to release its own GH | None directly | Is growth hormone |
| Approved versions | Tesamorelin (Egrifta) for HIV-associated visceral fat; most others unapproved | Testosterone and some others, by prescription | Somatropin products, by prescription (e.g. growth hormone deficiency) |
| Canadian legal frame | Mostly unauthorized drugs under the Food and Drugs Act | Controlled substances, CDSA Schedule IV | Prescription drug |
| WADA (sport) | Prohibited at all times (S2) | Prohibited at all times (S1) | Prohibited at all times (S2) |
| Main safety concerns | Little long-term human data; product quality and contamination | Heart, liver, hormonal shutdown, fertility, mood, virilization | Fluid retention, joint pain, carpal tunnel, blood sugar |
Sources for this table are the numbered references below, chiefly [2]–[9] and [12].
Legal status in Canada
This is the section most Canadians actually need, and it’s where the three groups really split apart.
Anabolic steroids: controlled substances (Schedule IV)
Item 23 of Schedule IV to the Controlled Drugs and Substances Act lists “anabolic steroids and their derivatives,” followed by a long list of named compounds, including testosterone, nandrolone, stanozolol and oxandrolone.[6] Under section 6 of the Act, importing or exporting a Schedule IV substance without authorization is an offence; prosecuted by indictment, it carries up to three years in prison.[6] Testosterone prescribed by a doctor and filled at a pharmacy is, of course, legal. If low testosterone is your real question, our low testosterone in Canada guide covers the medical route.
HGH: prescription only
Somatropin products are prescription drugs in Canada. The Genotropin monograph carries the “Pr” prescription symbol and states that therapy should be supervised by a physician experienced in managing growth hormone deficiency.[8] HGH also appears among the products Health Canada listed as seized and unauthorized in its August 2025 advisory on illegally sold injectable peptides.[13]
Peptides: mostly unauthorized drugs
Peptides are not controlled substances in the CDSA sense, but that doesn’t make them a legal free-for-all. Health Canada states that “in Canada, peptides are generally regulated as prescription drugs,” and its April 9, 2026 advisory named BPC-157, CJC-1295, ipamorelin, TB-500, retatrutide and others as unauthorized products that people should not buy or use.[12] The August 2025 advisory also named tesamorelin (unauthorized versions, as opposed to the approved Egrifta), sermorelin and many more.[13]
Two points from the 2026 advisory are worth knowing:
- Health Canada says a “For Research Use Only – Not for Human Consumption” label does not make a product legal for human use or exempt it from the rules.[12]
- It is working with the Canada Border Services Agency to stop unauthorized shipments.[12]
A September 2026 legal analysis by Gowling WLG adds useful context: Health Canada doesn’t regulate peptides as one category. Classification depends on intended use, route and claims, and a product promoted with therapeutic or physiological claims meets the legal definition of a drug. The firm also notes the permanent injunction Health Canada obtained from the Superior Court of Québec in June 2026 against an online peptide seller.[14]
Research peptides are lab reagents, not medicines. If you are thinking about any of these compounds for your own body, whether for muscle, fat loss, recovery or aging, talk to your doctor or pharmacist. They can tell you what’s approved, what’s safe for you and what the alternatives are.
Side effect profiles at a high level
This isn’t a complete safety guide. It’s a quick picture of why each group raises different concerns.
Anabolic steroids
The Endocrine Society’s 2014 scientific statement on performance-enhancing drugs linked their use to a higher risk of death and to cardiovascular, psychiatric, metabolic, endocrine, liver, kidney and musculoskeletal disorders, and noted that most users are not competitive athletes but recreational weightlifters, often at doses far above medical ones.[15] The 2022 Frontiers review details specifics, including:[5]
- Heart: high blood pressure, cardiomyopathy and thickening of the heart’s main pumping chamber.
- Hormonal shutdown: outside steroids suppress the body’s own testosterone and sperm production through negative feedback.
- Liver: particular concern with oral 17α-alkylated steroids.
- Breast tissue growth in men (gynecomastia) and acne.
- In women: virilizing effects such as a deeper voice and excess body hair.
HGH
In adults on prescription somatropin, the most common side effects relate to fluid retention: swelling of the hands, feet or face, joint pain, muscle pain and tingling or numbness, usually mild to moderate and early in treatment.[8] In healthy adults who use HGH for anti-aging, the Mayo Clinic lists carpal tunnel syndrome, high blood sugar and type 2 diabetes, swelling and joint or muscle pain. It also notes that the extra muscle doesn’t translate into extra strength.[7]
GH secretagogue peptides
Because they raise growth hormone and IGF-1, secretagogues are expected to share some of HGH’s effects, such as fluid retention. For unapproved research peptides, the bigger problem is how little anyone knows. Phillips’s McMaster analysis notes that few, if any, of the popular peptides have been tested in proper human trials.[1] Health Canada warns that unauthorized products may contain the wrong amount of active ingredient, unlisted ingredients or contaminants such as heavy metals, solvents or microbes.[12] We break down the published data compound by compound in ipamorelin side effects, CJC-1295 side effects and tesamorelin side effects.
Sport and anti-doping: all three are banned
If you compete in any tested sport, the steroid-vs-peptide distinction doesn’t help you. The 2026 WADA Prohibited List, in force since January 1, 2026, bans all three groups at all times, in and out of competition:[9]
- S1, anabolic agents: anabolic-androgenic steroids.
- S2, peptide hormones and growth factors: growth hormone and its analogues; GHRH and its analogues (the list names CJC-1295, sermorelin and tesamorelin); growth hormone secretagogues (it names ipamorelin and anamorelin); GHRPs such as GHRP-2 and GHRP-6; and IGF-1 and its analogues.
- S0, non-approved substances: a catch-all for compounds with no government approval for human use. BPC-157 is the example WADA names.
For the full story on that last one, read Is BPC-157 banned?
6 myths about peptides, steroids and HGH, debunked
“Myth: Peptides are just natural steroids.”
No. Peptides and steroids are different chemical classes with different shapes, different receptors and different legal treatment. The fact that both are discussed in gyms doesn’t make them the same thing. And “natural” is doing a lot of work in that sentence: most research peptides are synthetic, made by chemical synthesis in a lab.
“Myth: Growth hormone peptides are the same as taking HGH.”
Not quite. Secretagogues like ipamorelin and CJC-1295 don’t contain growth hormone. They prompt the pituitary to release its own.[2][3] The downstream effects overlap, but the mechanism, the size of the effect and the regulatory status all differ.
“Myth: If it’s not a steroid, it’s legal in Canada.”
Not being on the CDSA schedules doesn’t make something legal to sell for human use. Health Canada treats injectable peptides as prescription drugs and has named many of them as unauthorized.[12][13] A “research use only” label doesn’t change that.[12]
“Myth: Peptides won’t show up in a drug test.”
WADA prohibits GHRH analogues, GH secretagogues and IGF-1 analogues by class, and names specific peptides on its list.[9] Whether a given test detects a given compound is a separate technical question. Under anti-doping rules, using a prohibited substance is a violation either way.
“Myth: Tesamorelin is just another gray-market peptide.”
Tesamorelin is an approved prescription drug (Egrifta) in both the US and Canada, developed by a Montréal company, for a specific condition: excess visceral fat in people living with HIV and lipodystrophy.[4][10] Unapproved “tesamorelin” sold online is a different matter, and Health Canada lists it among seized unauthorized products.[13]
“Myth: HGH is a proven anti-aging drug.”
According to the Mayo Clinic, there’s little research suggesting HGH helps otherwise healthy adults regain youth and energy, and studies in healthy older adults have been small and short.[7] Its approved uses are specific medical conditions such as true growth hormone deficiency.[7][8] For what the evidence does and doesn’t show on aging research, see our longevity peptides guide.
For researchers
If your work involves the GH axis in vitro (receptor signalling, pituitary cell models or secretagogue comparisons), TrueLabs supplies Ipamorelin from $40, CJC-1295 with DAC from $31, Tesamorelin from $37, the CJC/Ipamorelin blend from $75 and IGF1-LR3 from $15, all for in vitro and laboratory research only. For background on the IGF-1 analogue, see IGF-1 vs IGF-1 LR3. Before you trust any vial, from us or anyone else, learn how to read a peptide COA, browse the COA library and know how to spot fake peptides.
FAQ
Tap a question to reveal the answer.
Are peptides steroids?
No. Peptides are short chains of amino acids, while anabolic steroids are four-ring molecules related to testosterone. They act on different receptors: most peptides bind receptors on the cell surface, while steroids enter the cell and act on the androgen receptor to change gene activity. Canada also regulates them under different laws.
Is HGH a peptide or a steroid?
HGH is neither a small peptide nor a steroid. It is a protein hormone made of 191 amino acids, produced by the pituitary gland. Anti-doping rules group it with “peptide hormones” because it is built from amino acids.
What is the difference between HGH and growth hormone peptides?
HGH is the growth hormone itself. Growth hormone peptides such as ipamorelin, CJC-1295 and tesamorelin are secretagogues: they signal the pituitary to release its own growth hormone through the GHRH receptor or the ghrelin receptor. Of these, only tesamorelin is an approved drug, and only for a specific HIV-related indication.
Are anabolic steroids illegal in Canada?
Anabolic steroids are listed in Schedule IV of the Controlled Drugs and Substances Act. Importing or exporting them without authorization is an offence that can carry up to three years in prison on indictment. Prescription testosterone obtained through a doctor and a pharmacy is legal.
Is HGH legal in Canada?
HGH (somatropin) is a prescription drug in Canada, used under specialist supervision for conditions like growth hormone deficiency. HGH sold online without authorization is illegal to sell, and Health Canada has listed it among seized unauthorized products.
Are peptides legal in Canada?
Health Canada says peptides are generally regulated as prescription drugs, and it has named many popular ones, including BPC-157, CJC-1295 and ipamorelin, as unauthorized products people should not buy or use. It also says “research use only” labels do not make products legal for human use. Approved peptide medicines, such as semaglutide or tesamorelin, are legal by prescription.
Is tesamorelin a steroid?
No. Tesamorelin is a peptide, an analogue of growth hormone-releasing hormone that acts on the pituitary. It is approved as Egrifta in the US (2010) and Canada (2014) to reduce excess visceral fat in adults with HIV and lipodystrophy.
Are peptides banned in sports?
Yes. The 2026 WADA Prohibited List bans growth hormone, GHRH analogues such as CJC-1295 and tesamorelin, growth hormone secretagogues such as ipamorelin, and IGF-1 analogues at all times. Unapproved compounds like BPC-157 fall under the S0 “non-approved substances” category.
Are peptides safer than steroids?
Not automatically. Steroids have well-documented risks to the heart, liver, hormones and fertility, while most research peptides simply haven’t been studied enough in humans to know their long-term risks. Unauthorized products can also be mislabelled or contaminated, so “less studied” shouldn’t be mistaken for “safer.”
Do growth hormone peptides raise IGF-1?
In a 2006 study in healthy adults, CJC-1295 raised growth hormone 2- to 10-fold and IGF-1 1.5- to 3-fold for more than a week after a single administration. Raising IGF-1 is the expected downstream effect of releasing more growth hormone.
Related reading
- CJC-1295 vs Tesamorelin vs Ipamorelin
- What Is Tesamorelin?
- Is BPC-157 Banned?
- Peptides 101
- Low Testosterone in Canada
- The 2026 FDA Peptide Panel Vote
References
- Phillips S. Analysis: The peptide problem: Hype is outrunning the evidence. McMaster University News (republished from The Conversation). May 7, 2026. McMaster News
- Raun K, Hansen BS, Johansen NL, Thøgersen H, Madsen K, Ankersen M, Andersen PH. Ipamorelin, the first selective growth hormone secretagogue. Eur J Endocrinol. 1998;139(5):552-561. PubMed
- Teichman SL, Neale A, Lawrence B, Gagnon C, Castaigne JP, Frohman LA. Prolonged stimulation of growth hormone (GH) and insulin-like growth factor I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults. J Clin Endocrinol Metab. 2006;91:799-805. DOI
- Health Canada. Summary Basis of Decision: Egrifta (tesamorelin). Notice of Compliance April 29, 2014; sponsor Theratechnologies Inc. Health Canada
- Bond P, Smit DL, de Ronde W. Anabolic-androgenic steroids: How do they work and what are the risks? Front Endocrinol. 2022;13:1059473. Frontiers
- Government of Canada. Controlled Drugs and Substances Act (S.C. 1996, c. 19), Schedule IV (item 23) and section 6. Current to September 30, 2026. Schedule IV · Section 6
- Mayo Clinic Staff. Human growth hormone (HGH): Does it slow aging? Mayo Clinic. Mayo Clinic
- Pfizer Canada ULC. Product Monograph: Genotropin (somatropin [rDNA origin] for injection). Revised June 22, 2020. Health Canada Drug Product Database
- World Anti-Doping Agency. The 2026 Prohibited List (in effect January 1, 2026): classes S0, S1 and S2. PDF
- Theratechnologies Inc. FDA approves EGRIFTA (tesamorelin for injection), first and only treatment for reduction of excess abdominal fat in HIV-infected patients with lipodystrophy. Press release, November 11, 2010. FiercePharma
- Theratechnologies Inc. Theratechnologies announces completion of acquisition by Future Pak. Press release, September 25, 2025. Press release
- Health Canada. Think twice before injecting peptides bought online: Unauthorized products can seriously harm your health (RA-81874). April 9, 2026. Recalls and Safety Alerts
- Health Canada. Unauthorized injectable peptide drugs seized and sold in Canada may pose serious health risks. August 1, 2025. Recalls and Safety Alerts
- Powers JP. Peptides in Canada: Regulatory reality is catching up with the hype. Gowling WLG. September 9, 2026. Gowling WLG
- Pope HG Jr, Wood RI, Rogol A, Nyberg F, Bowers L, Bhasin S. Adverse health consequences of performance-enhancing drugs: an Endocrine Society scientific statement. Endocr Rev. 2014;35(3):341-375. PubMed
This article summarizes published research and regulatory information for information only and is not medical advice. TrueLabs research compounds are sold for in vitro and laboratory research use only and are not intended for human or veterinary use.