Peptide knowledge base: 25 guides on storage, mixing and equipment
Plain-language guides on storing peptides, reconstitution and units, syringes and pens, plus legal and sport status. No dosing advice, no shops.
Storage & shelf life
Fridge, freezer or room temperature, and how long a vial really lasts.
Peptide storagePeptide storage for powder and reconstituted solution: pharmacopoeial temperature classes, the degradation chemistry, and the 28-day beyond-use rule.Room temperatureRoom temperature is a storage class, not a shelf life: the pharmacopoeial temperature bands, and why powder and solution behave differently in heat.Peptide vialsPeptide vial labels and what belongs on them, single-dose versus multiple-dose containers, ISO glass and closure standards, and the two clocks a vial runs.Storing in a syringeWhat leaches from barrel, plunger and silicone oil into a filled insulin syringe, how much peptide adsorbs to the surfaces, and what the material data show.
Reconstitution & units
Bacteriostatic water, mixing ratios and reading units off an insulin syringe.
Bacteriostatic waterBac water explained: what the 0.9% benzyl alcohol in bacteriostatic water does, what the USP monograph and the FDA label say, and where it is used.Bac water shelf lifeWhat the label states about storage at 20–25 °C, why a fridge is not part of it, and what the 28-day beyond-use convention means after the first puncture.Insulin syringe unitsOn a U-100 syringe 100 units equal 1 mL and one unit equals 0.01 mL. Unit-to-milliliter tables, the 0.3, 0.5 and 1 mL scales, plus U-40 and U-500.mg, mL & IUmg is weight, mL is volume, IU is biological activity. Three different units people mix up all the time. Here is the plain-English difference, with worked examples.ReconstitutionWhat reconstitution means, the mg/mL definition in abstract placeholders, why the liquid volume is a measurement trade-off, and the storage conventions for a mixed vial.BAC vs sterile waterBacteriostatic water vs sterile water: one keeps a punctured vial usable for weeks, the other for about a day. What benzyl alcohol does and why it matters.Mixing peptidesWhy peptide solutions can turn cloudy the moment they share a barrel: pH, the isoelectric point, salt effects, and how a precipitate is recognised.Syringe filtersWhat a 0.22 µm sterilizing-grade syringe filter is rated to retain, which membrane materials keep peptide adsorption low, and what filtration cannot remove.SLU-PP-332SLU-PP-332 is a lipophilic small molecule, not a peptide. Why aqueous solvents leave the solid untouched, and what cosolvent chemistry such as DMSO changes.CagrilintideAn amylin analogue does not behave in water like an ordinary lyophilised peptide. What the pH optimum actually refers to, what a fibril is, and where solubility chemistry stops.
Equipment & syringes
Syringes, needles and pens — what to pick and how to use it.
Syringe sizesBarrel sizes, scale divisions, gauge numbers and dead space as device facts, with the ISO standards behind them and what the tolerance allows.Syringe vs penInsulin syringe or injection pen for reconstituted peptides? How they compare on dosing accuracy, cost, waste and convenience — and which to pick.Peptide pensReusable peptide injection pens compared: manual vs automatic, clicks vs silent, half-unit precision, and cartridge and adapter compatibility.Auto vs manual penAutomatic (spring-loaded) or manual injection pen? How the two delivery styles differ in feel, control and speed — and who each one suits.Injection safetyThe safety layer around subcutaneous injection: what sterile handling means, why rotation exists as a concept, how sharps waste is regulated, and which signs belong to a clinician.
Basics & status
What peptides are, their legal status and where the sport rules stand.
What are peptides?Peptides are short chains of amino acids that act as biological messengers. What they are, how they differ from proteins, the main types, and why dosing and half-life matter.Peptide listA categorised list of peptide names with the regulatory status of each: approved medicine, investigational, unapproved research chemical or supplement.Are peptides legal?Are peptides legal? It depends on the peptide, the country, and how it is sold and used. Approved drugs, the research-chemical gray zone, and bans.FDA-approved peptidesWhat peptides are FDA approved? A plain list of approved peptide drugs by brand and use, what approval means, and which popular ones are not.Banned in sport?What the WADA Prohibited List and the NCAA banned classes say about peptides: section S0, the S2 class, the named examples, and where they differ.PronunciationSyllables, stress, IPA and plain-English respellings for peptide INN names, the WHO stems behind them, and why speakers disagree about the accent.
This article is for informational purposes only and does not replace medical advice. myPeptides gives no dosing recommendations.