Straight answers about research peptides.
Comparisons, quality questions, and the practical details people actually search for — each one cited to the primary literature and written for laboratory research context.
- Comparisons
BPC-157 vs TB-500 — what the tendon literature actually compared
Different mechanisms, different evidence bases, almost no head-to-head data. What each was actually studied for, and where the comparison breaks down.
7 min - Comparisons
Ipamorelin vs Sermorelin — two different receptors, often confused
Grouped as growth-hormone research peptides, but they act on different receptors. What that distinction means, and why selectivity is the point.
6 min - Comparisons
Selank vs Semax — two Russian-developed peptides, two different origins
Often sold as a pair and assumed to be variants of one another. They derive from completely different parent molecules, and the literature reflects that.
6 min - Comparisons
Sermorelin vs Tesamorelin — same receptor, very different regulatory status
Both are GHRH analogues at the same receptor. One is an approved prescription drug, the other is not — and that matters more than any mechanism debate.
6 min - Comparisons
BPC-157 vs KPV — two gut-model peptides from completely different origins
Both appear in gastrointestinal research, and that is where the similarity ends: a gastric-protein fragment versus a three-amino-acid hormone tail.
6 min - Comparisons
MOTS-c vs NAD+ — one is a peptide and the other is not
Compared as if they were options in one category. One is a mitochondrial-derived peptide, the other a coenzyme in every cell. That error is the confusion.
6 min - Comparisons
Epitalon vs Pinealon — two short bioregulators with a shared research lineage
Two short peptides from the same Russian research tradition, with the same evidence caveat. What each actually is, and why the literature is hard to weigh.
5 min - Comparisons
Dihexa vs Semax — different molecules, both wearing the nootropic label
Grouped by marketing, not chemistry. One is angiotensin-IV-derived, the other an ACTH fragment analogue, and their evidence bases barely overlap.
5 min - Comparisons
CJC-1295, Ipamorelin, Sermorelin, Tesamorelin — the four compared
Four compounds, two mechanisms, one approved drug among them. A single table for the comparison people usually assemble from four separate pages.
7 min - Comparisons
CJC-1295 vs Tesamorelin — two GHRH analogues, one of them a drug
Both mimic the same releasing hormone at the same receptor. They differ in how they were modified and, decisively, in regulatory standing.
5 min - Comparisons
GHK-Cu vs NAD+ — a copper tripeptide and a coenzyme
Another pairing that only exists because both sit on the same shelf. One is a three-amino-acid copper complex; the other is not a peptide at all.
5 min - Comparisons
Epitalon vs DSIP — both associated with sleep research, for different reasons
One is a four-amino-acid bioregulator from the Russian pineal programme; the other a nonapeptide named for the effect it was isolated in connection with.
5 min - Comparisons
BPC-157 vs CJC-1295 — a repair peptide and a releasing-hormone analogue
Compared often, related barely at all. One is studied in tissue-repair models, the other mimics a hypothalamic releasing hormone.
5 min - Comparisons
5-Amino-1MQ vs MOTS-c — two metabolic research compounds, different targets
Both appear in metabolic research and only one is a peptide. What each is studied against, and why the pairing is a shelf rather than a category.
5 min - Comparisons
MOTS-c vs Tesamorelin — a mitochondrial peptide and a releasing-hormone analogue
One is encoded in mitochondrial DNA; the other mimics a hypothalamic hormone and is an approved drug. Different pathways, different regulatory worlds.
5 min - Comparisons
NAD+ vs Sermorelin — a coenzyme and a releasing-hormone analogue
Paired in anti-ageing searches and otherwise unrelated. One is not a peptide; the other acts on an endocrine axis.
4 min - Comparisons
Pinealon vs Semax — both Russian-developed, very different evidence bases
A three-amino-acid bioregulator against an ACTH-fragment analogue. Shared development country, unrelated molecules, and one has a far larger literature.
5 min - Comparisons
Dihexa vs Pinealon — Western academic work against a Russian bioregulator
Grouped under the cognitive label, produced by entirely separate research worlds. The real difference is how each body of evidence is constituted.
5 min
Browse by category
- Comparisons
- Two compounds, side by side, on what the literature actually measured.
- Getting started
- Plain answers to the questions people ask before their first order.
- Quality & testing
- Purity, chromatograms, certificates — how to read what you are sold.
- Storage & handling
- Reconstitution, temperature, shelf life, and the arithmetic behind them.
- Choosing a supplier
- What separates a documented supplier from a drop-shipper.