Understand peptides.
Make informed decisions.
Independent, evidence-based profiles of every peptide that matters. No vendors. No hype. Just honest science, clearly explained.
Not sure where to begin?
Everyone starts somewhere. Pick the path that feels right for you.
New to peptides?
Start with the basics. We'll walk you through what peptides are, how they work, and what the evidence says — no jargon, no assumptions.
Begin hereExploring for a specific goal?
Looking into recovery, skin health, immune support, or something else? Browse peptides by what they're studied for, with honest assessments.
Browse by goalComing from the gray market?
No judgment. If you've been sourcing peptides online and want to understand what you're taking, we'll help you separate claims from science.
Get clarityWork the math without leaving the site
The tools suite is built for the practical moments: reconstitution math, clean syringe-unit conversions, and planning workflows that usually get split across spreadsheets.
Reconstitution
Translate vial strength, diluent volume, and target dose into mL and syringe units with a visual draw guide.
Open tool Preparation & mathUnits converter
Quickly convert between concentration, syringe units, and IU workflows without hiding the underlying math.
Open tool Preparation & mathBAC water planner
Choose the draw you want to see on the syringe first, then work backward to the diluent volume that gets you there.
Open toolThe peptide landscape is changing fast
Regulatory shifts, vendor shutdowns, and new research are reshaping the space. Here's what you need to know.
March 16, 2026
What Happened to Peptide Sciences?
One of the largest gray-market peptide vendors shut down without warning. What happened, what it means for people who relied on them, and what comes next.
ReadMarch 2026
How to Evaluate a Peptide Clinic
A practical guide to vetting clinics that offer peptide therapy — what to ask, what to watch for, and how to tell the credible from the questionable.
ReadExplore featured peptides
Each profile is independently researched. Evidence bars show the strength of current scientific support.
BPC-157
Research compoundA peptide fragment studied for tissue repair, gut healing, and recovery. Most evidence is preclinical.
Animal studies are promising, but human clinical data is very limited.
Read full profile →GHK-Cu
Available topicallyA copper peptide naturally found in your body. Studied for skin health, wound healing, and anti-aging effects.
One of the better-studied peptides for topical skin care.
Read full profile →Thymosin Alpha-1
Available with prescriptionAn immune-modulating peptide approved in 30+ countries for chronic infections and immune support.
Solid clinical track record internationally.
Read full profile →Semaglutide
FDA-approvedA GLP-1 receptor agonist FDA-approved for type 2 diabetes and weight management.
Extensive clinical evidence. Widely prescribed and studied.
Read full profile →BPC-157
Body Protection Compound-157 — a synthetic pentadecapeptide derived from a protective protein in human gastric juice. Studied primarily for tissue repair and gut healing.
At a glance
BPC-157 is one of the most talked-about peptides in the recovery space. It shows real promise in animal studies for healing tendons, ligaments, muscle, and gut tissue. However, published human clinical trials are very limited — we're still waiting for the data that would tell us how well it truly works in people.
Consistent results across 12 animal models including rats, mice, and horses. Strongest evidence for tendon and GI repair.
Only 3 small human studies (~30 total participants). No completed Phase III trial. First rigorous RCT began recruiting February 2026.
Total controlled human safety data from exactly 2 subjects. Low toxicity in animals, but long-term human safety is unknown.
Despite more than one hundred animal studies demonstrating healing effects across multiple organ systems, BPC-157 has never completed a human clinical trial — the most significant gap in its evidence profile.
What it does
BPC-157 is believed to promote healing through several mechanisms: stimulating growth factor expression, promoting blood vessel formation (angiogenesis), and modulating the nitric oxide system. In animal models, it has accelerated recovery from cuts, burns, tendon injuries, and some neurological damage.
The peptide appears to have a protective effect on the GI tract, which is why it's sometimes called “body protection compound.” Researchers have studied it for conditions ranging from inflammatory bowel issues to NSAID-induced stomach damage.
How people use it
BPC-157 is most commonly discussed in the context of injury recovery and gut health. Some practitioners offer it as a subcutaneous injection, while others explore oral capsules. It is not currently FDA-approved for any condition.
Dosing information circulating online varies widely and should be treated with caution. If you're considering BPC-157, a conversation with a knowledgeable healthcare provider is a good starting point.
Safety & side effects
In animal studies, BPC-157 has shown a remarkably low toxicity profile with no reported lethal dose. However, the absence of robust human safety data means we should be cautious about drawing firm conclusions.
Reported side effects in user communities are generally mild (injection-site irritation, occasional nausea), but these are self-reported and not from controlled studies. Long-term safety in humans is unknown.
Evidence comparison
BPC-157 vs Semaglutide
BPC-157
Research compound · Not FDA-approved
Total studies
~100+
Human trials
3
FDA status
Category 2
First studied
1991
Semaglutide
FDA-approved · 3 brand names
Total studies
1,000+
Human trials
100+
FDA status
Approved
First studied
2012