Peptides vs SARMs in Australia (Explained)

The short answer

Peptides and SARMs are two different categories of compound that people often confuse. Peptides are short chains of amino acids, the same building blocks that make up proteins. SARMs, or selective androgen receptor modulators, are synthetic non-steroidal small molecules. They have different chemical structures and are thought to act through different biological pathways.

In Australia, both categories are commonly treated as prescription-only substances under the Poisons Standard, and many are not approved for general supply. The detail varies compound by compound. NovaPeptides supplies research compounds for laboratory research use only, and the information below is a neutral overview rather than any kind of guidance on use.

What peptides are

A peptide is a short chain of amino acids joined by peptide bonds. In broad terms, chains of roughly two to fifty amino acids are often called peptides, while longer chains fold into what are usually called proteins. The body itself makes many peptides, and researchers also study synthetic versions in laboratory settings.

Because amino acid sequences vary widely, the peptide category is very broad. Different research peptides are studied for very different reasons, and their proposed mechanisms are generally described as receptor-mediated signalling, where a peptide interacts with a specific receptor or pathway. This article does not make any claim about what any individual peptide does.

General characteristics often associated with peptides

• Built from amino acids joined by peptide bonds
• Usually larger and more complex than small-molecule drugs
• Frequently studied for receptor or signalling interactions
• A very broad category covering many distinct sequences

What SARMs are

SARMs stands for selective androgen receptor modulators. Unlike peptides, SARMs are synthetic non-steroidal small molecules rather than amino acid chains. They are generally described in the scientific literature as compounds designed to interact with the androgen receptor.

Examples of compounds commonly discussed under the SARM label in research and anti-doping literature include ostarine (enobosarm), ligandrol (LGD-4033), RAD140, andarine, S-23 and YK-11. These are investigational compounds and are not approved medicines in Australia. NovaPeptides frames any such compounds as research materials for laboratory use only.

General characteristics often associated with SARMs

• Synthetic, non-steroidal small molecules
• Described as acting at the androgen receptor
• Investigational, not approved medicines in Australia
• Prohibited in sport under the WADA code

How their mechanisms differ

The clearest distinction is structural. Peptides are amino acid chains, while SARMs are small synthetic molecules. That difference in structure is linked to a difference in how each category is generally described as working.

Peptides are typically discussed in terms of receptor-mediated signalling across a wide range of possible receptors and pathways, depending on the specific sequence. SARMs are specifically discussed in relation to the androgen receptor, which is the same receptor family associated with androgenic signalling. Because of this focus, SARMs sit in the broad anabolic-agent category in anti-doping frameworks, whereas peptides are far more varied and are classified case by case.

Australian regulatory treatment

In Australia, medicines and poisons are classified in the Standard for the Uniform Scheduling of Medicines and Poisons, commonly called the Poisons Standard, administered by the Therapeutic Goods Administration (TGA).

SARMs are generally treated as Schedule 4 (Prescription Only) substances under the Poisons Standard, and public reporting indicates there are no SARM-containing medicines on the Australian Register of Therapeutic Goods (ARTG). In other words, no SARM has been approved as a registered medicine for general supply in Australia, and the TGA has publicly warned about SARMs being sold illegally.

Many research peptides are also captured by Schedule 4, and some are additionally listed in Appendix D, which applies further controls. For example, BPC-157 was added to Schedule 4 and Appendix D with an implementation date of 1 June 2024, according to the Poisons Standard. At the same time, some peptide-class medicines are ARTG-registered Schedule 4 products: for instance, certain GLP-1 medicines such as Ozempic (semaglutide) and Mounjaro (tirzepatide) are registered on the ARTG as prescription-only medicines. The point is that scheduling is decided compound by compound, not by the broad label alone.

Status in sport (WADA)

In the context of sport, the World Anti-Doping Agency (WADA) maintains a Prohibited List. SARMs are prohibited at all times, in and out of competition, and are listed among the anabolic agents in section S1 of that list. Several named examples appear in anti-doping literature, and the broader class is captured even where a specific compound is not named individually.

Peptides are treated differently depending on the compound. Some peptide-class substances appear on the Prohibited List under various categories, while others do not. As with the Poisons Standard, the status is determined per compound. Anyone subject to anti-doping rules should check the current WADA Prohibited List directly.

The research-use-only supply model

NovaPeptides supplies research compounds for laboratory research use only. That framing applies to the whole catalogue and is not specific to any single compound. Products are intended for use by researchers in appropriate laboratory settings and are not supplied for human or animal use, and no therapeutic, performance or body-composition outcome is claimed or implied.

Because both peptides and SARMs can carry prescription-only scheduling in Australia, the research-use-only model exists to keep supply within a laboratory research context. Researchers remain responsible for understanding and complying with all applicable laws, including the Poisons Standard, import rules and any institutional requirements that apply to them.

Putting it together

Peptides and SARMs are distinct categories. Peptides are amino acid chains studied for a wide range of signalling pathways, while SARMs are synthetic non-steroidal small molecules discussed in relation to the androgen receptor. They are not the same thing and should not be treated as interchangeable.

In Australia, both commonly attract Schedule 4 (Prescription Only) treatment, SARMs have no ARTG-registered medicine for general supply, some research peptides carry extra Appendix D controls, and certain peptide-class medicines are ARTG-registered. SARMs are prohibited in sport under the WADA code. Throughout, the correct reference is the current Poisons Standard, ARTG and WADA list rather than the broad category label, and all NovaPeptides compounds are supplied for laboratory research use only.

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