Two peptides, one difference that decides it.
Every comparison starts with mechanism rather than marketing: what binds to what, how long it stays active, and how much research sits behind it. Where we cannot ship something, the card says so.
Metabolic & weight
Semaglutide vs Tirzepatide vs Retatrutide
One receptor, two, or three — and how much evidence sits behind each.
Read the comparisonOut of stock: TirzepatideRetatrutide vs Tirzepatide
The head-to-head the three-way article covers only in passing, and the highest-volume pairing in the category.
Read the comparisonOut of stock: TirzepatideSemaglutide vs Retatrutide
The established single-agonist against the triple — the pairing our own stock actually supports.
Read the comparisonSemaglutide
An amylin analogue against a GLP-1 agonist. We do not stock cagrilintide; customers ask for it by name.
In progress
Growth hormone secretagogues
CJC-1295 No DAC vs Ipamorelin
A GHRH analogue against a ghrelin-receptor agonist, and why they are usually paired rather than picked.
Read the comparisonSermorelin vs CJC-1295 No DAC vs Tesamorelin
Three GHRH analogues separated mostly by half-life and by how much clinical data exists.
Read the comparisonOut of stock: SermorelinIpamorelin vs MK-677
Injectable and selective, against oral and long-acting with appetite effects.
Read the comparisonOut of stock: MK-677IGF-1 LR3 vs MK-677 vs Ipamorelin
Acting downstream of growth hormone versus acting on its release.
Read the comparisonOut of stock: IGF-1 LR3, MK-677HGH vs Ipamorelin
Supplying the hormone directly against prompting the body to release its own — the question underneath most of this category.
In progressHexarelin vs Ipamorelin
The most potent ghrelin-receptor agonist against the most selective one, and what potency costs.
In progressOut of stock: Hexarelin
Longevity & cellular
NAD+ vs Epithalon Premium
Cellular energy metabolism against telomere and circadian signalling — two different theories of ageing.
In progressOut of stock: Epithalon PremiumNAD+ vs MOTS-c
Two mitochondrial approaches: replenishing a cofactor against a mitochondrial-derived peptide signal.
In progressOut of stock: MOTS-c
Cognitive & sleep
Selank vs Semax
Anxiolytic against stimulatory — the two are searched together almost every time.
In progressOut of stock: SemaxDSIP vs Selank
Sleep architecture against daytime anxiety, and why that difference decides which one fits.
In progress
Sexual health
PT-141 vs Melanotan II
A melanocortin agonist selected for one effect against one that produces several.
Read the comparisonOut of stock: PT-141, Melanotan IIMelanotan I vs Melanotan II
Selective against broad melanocortin binding, and what that predicts about side effects.
In progressOut of stock: Melanotan II
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