Frequently Asked Questions
What actually is a peptide?
A short chain of amino acids — a fragment of a protein. Your body runs on thousands of them as signaling molecules: hormones, repair signals, immune messengers. The research compounds discussed here are synthetic copies or modified versions of those natural signals.
Are these legal?
Most compounds here are sold legally as research chemicals — legal to buy and possess for research purposes in most of the US, but not approved by the FDA for human use, and not legal to market for human consumption. That's the entire legal frame in one sentence, and it's why every page on this site is educational rather than a recommendation.
What does "research use only" actually mean?
It means no regulator has evaluated these compounds for safety or effectiveness in humans, no manufacturing standard for human dosing applies, and nobody may lawfully sell them for human use. What individual adults do is between them, the law where they live, and ideally a physician.
How do I know if a vial actually contains what the label says?
Third-party testing. A COA (Certificate of Analysis) from an independent lab states what's in the vial and at what purity. This is the single most important question to ask any source — unverified gray-market peptides fail testing at meaningful rates, and the risk isn't just "it doesn't work," it's "it's something else entirely."
What is reconstitution?
Peptides ship as freeze-dried (lyophilized) powder for stability. You add bacteriostatic water to turn them back into an injectable solution. The calculator does the concentration and syringe math for you.
What supplies do I need?
Bacteriostatic water, U-100 insulin syringes (the standard for subcutaneous research protocols), alcohol wipes, and a fridge. That's the whole kit.
Do peptide injections hurt?
Subcutaneous injections use tiny insulin needles into belly fat — most people describe it as barely noticeable. Some compounds (GHK-Cu notably) sting; the profiles flag which.
How long until effects show?
Compound-dependent — the honest ranges are on each profile. Broad strokes: GLP-1-class appetite effects show in days; recovery peptides run in weeks; GH-axis and skin protocols run in months. Anything promising overnight results is marketing, not research.
Can I stack multiple peptides?
Common in research protocols — that's what the stacks section maps. The universal advice: add one compound at a time, so you know what's doing what.
Where does the AI get its answers?
The Ask the AI assistant knows this site's library inside out — every profile, program, and guide — and it can also answer general peptide questions that go beyond these pages. Ask it about doses and it'll do what a good coach does: ask what your goal is, point you at the right program, and give you the straight answer. It's an educator and a guide, not a doctor.