Fat-loss peptides: the overview of metabolic research

Research context (RUO): This hub gives an overview of the molecules studied in research around fat metabolism (lipolysis) and metabolism. All substances mentioned are supplied solely for in-vitro laboratory research and are not intended for human or animal use.

Fat-loss peptides: the overview of metabolic research

“Fat-loss peptides” is a collective name for research molecules that act on fat metabolism and energy expenditure in different ways. By no means do they all work the same: one drives the breakdown of fat (lipolysis), another flips a metabolic “switch”, and yet another steers appetite and satiety. This page is an overview (hub): for each group we briefly explain what the research shows and link to the separate pillar. All findings come from cell and animal models or clinical studies — not from use by the reader.

How do these molecules differ? — in plain language

Fat does not disappear in just one way. Broadly speaking, there are three routes that recur in research: directly triggering fat breakdown in fat cells (lipolysis), raising the cell's overall energy expenditure, and influencing appetite and satiety via hormones. The peptides below fall into those three angles.

HGH fragments & lipolysis

A fragment has been derived from the growth hormone molecule that in research is associated with fat breakdown, without the growth effects of the full hormone. AOD-9604 and HGH fragment 176-191 are the best-known examples; they are studied around lipolysis in fat-cell models.

Metabolic activators & “exercise mimetics”

Another group acts on the cell's energy metabolism and is sometimes called an “exercise mimetic”, because in animal models it elicits effects resembling exercise. This includes AICAR (AMPK activator), SLU-PP-332 (ERR agonist) and 5-Amino-1MQ (NNMT inhibitor).

Lipotropic substances & others

Lipotropic substances (such as Lipo-C, MIC+B12 and L-carnitine) are studied around fat transport in the liver and fatty-acid oxidation. The adipose-tissue-focused adipotide is a separate, more exploratory line of research.

GLP-1 & satiety

The largest and best-studied group works via appetite and satiety: the GLP-1 family (semaglutide, tirzepatide, retatrutide and relatives). Because that is a field in itself, it is covered extensively in the hub comparing GLP-1 peptides.

Quality & purity

Every relevant batch is independently HPLC-tested by an external laboratory; the CoA is publicly verifiable per batch. See also why we rejected a batch.

Frequently asked questions

What are fat-loss peptides?
A collective name for research molecules that in studies are associated with fat metabolism and energy expenditure — from HGH fragments and metabolic activators to GLP-1 agonists. Solely for laboratory research.

Do these peptides make you lose weight?
Peplife makes no usage or health claims. The described effects come from cell, animal and clinical studies and are attributed to those studies, not to the reader.

What is an “exercise mimetic”?
A molecule that in animal models elicits a metabolic response resembling the response to exercise. AICAR and SLU-PP-332 are described this way. It is a research concept, not a proven property in humans.

Where do semaglutide and tirzepatide belong?
With the GLP-1 family, which works via appetite and satiety. See the separate hub comparing GLP-1 peptides.

May I use these peptides?
No. All substances mentioned are intended solely for in-vitro laboratory research (RUO), not for human or animal use.

Read more & research at Peplife

• View all metabolism peptides
• HGH fragments: AOD-9604 · HGH fragment 176-191
• Metabolic activators: AICAR · SLU-PP-332 · 5-Amino-1MQ
• Other: lipotropic substances · adipotide
• GLP-1: Compare GLP-1 peptides (hub)

Sources: L-carnitine & lipolysis in adipocytes, J Med Food (2006) · Billon et al., ERR agonist SLU-PP-332, ACS Chem Biol (2023)

Research Use Only. All products are supplied exclusively for in vitro laboratory research. Not intended for diagnostic or therapeutic use in humans or animals, and not approved by the EMA or FDA.