Research focus
Muscle, growth & performance research peptides
Research concerns the growth-hormone/IGF axis, lean mass and physical performance. Each compound below carries a score out of 100 combining the strength of its published research with the certificate evidence of the vendors that carry it — a score of evidence, never a claim that a compound is safe, effective or suitable for any purpose.
Browse by research focus
Showing 12 of 12 compounds — Research concerns the growth-hormone/IGF axis, lean mass and physical performance.
- B
GHRP-6
Tissue & recovery95.2A growth-hormone-releasing hexapeptide and ghrelin-receptor agonist studied for stimulating growth hormone secretion.
Muscle & growth3 vendors1 certificates99.8% mean purityTier B evidence · Established popularity
- A
Ipamorelin
Other93A synthetic pentapeptide that acts as a growth hormone secretagogue in published preclinical work. Supplied as a lyophilised powder.
Muscle & growth26 vendors26 certificates99.7% mean purityTier A evidence · High popularity
- A
Sermorelin
Tissue & recovery92.5A synthetic peptide corresponding to the first 29 amino acids of growth-hormone-releasing hormone, which stimulates the pituitary gland to release growth hormone.
Muscle & growth16 vendors11 certificates99.4% mean purityTier A evidence · Established popularity
- B
Hexarelin
Tissue & recovery92.3A synthetic growth-hormone-releasing hexapeptide studied for growth hormone secretion and cardiovascular effects.
Muscle & growth5 vendors1 certificates99.1% mean purityTier B evidence · Established popularity
- S
Tesamorelin
Metabolic92.2A stabilised analogue of growth-hormone-releasing hormone, approved to reduce excess visceral abdominal fat in a specific clinical population.
Fat lossMuscle & growth26 vendors37 certificates99.7% mean purityTier S evidence · High popularity
- B
IGF-1 LR3
Tissue & recovery89.9A modified, longer-acting analogue of insulin-like growth factor 1, altered to extend its half-life and reduce binding to carrier proteins. It is a common cell-culture reagent.
Muscle & growth12 vendors6 certificates99.2% mean purityTier B evidence · Established popularity
- A
CJC-1295
Other88.8A synthetic analogue of growth hormone releasing hormone. Two distinct forms circulate under similar names — with and without a drug affinity complex — and vendors are not consistent about which they list. This index records the form named on the certificate rather than the form named in the product title.
Muscle & growth19 vendors12 certificates99.5% mean purityTier A evidence · High popularity
- B
Follistatin-344
Tissue & recovery52An isoform of follistatin, an endogenous antagonist of myostatin and related TGF-beta ligands. Its published literature is predominantly preclinical and concerns muscle, fibrosis and reproductive biology.
Muscle & growth1 vendors0 certificatesTier B evidence · Niche popularity
- B
GHRP-2
Tissue & recovery49.9A growth-hormone-releasing peptide (also known as pralmorelin) studied for stimulating growth hormone secretion.
Muscle & growth2 vendors0 certificatesTier B evidence · Established popularity
- B
HGH (Somatropin)
Tissue & recovery38Recombinant human growth hormone (somatropin), a 191-amino-acid protein identical to the pituitary hormone. It is one of the most extensively studied compounds in endocrinology and is supplied by the vendors in this index as a research material.
Muscle & growthLongevity0 vendors0 certificatesTier B evidence · High popularity
- B
Mecasermin (IGF-1)
Tissue & recovery38Recombinant human insulin-like growth factor-1 (mecasermin). It is an approved prescription medicine for severe primary IGF-1 deficiency and is listed by vendors here as a research material.
Muscle & growth0 vendors0 certificatesTier B evidence · Niche popularity
- D
SLU-PP-332
Metabolic25.2A synthetic pan-agonist of the estrogen-related receptors (ERRs), studied preclinically as an exercise-mimetic in models of metabolism and endurance.
Fat lossMuscle & growth1 vendors0 certificatesTier D evidence · Niche popularity