Guide sections
Educational content only. This is not medical advice. If you are using prescription therapies, follow your clinician's instructions and local laws.
Most peptides arrive as a dry powder in a vial. The typical workflow is:
- 1Reconstitute the powder with bacteriostatic water (BAC water)
- 2Calculate your concentration (how strong the liquid is)
- 3Measure and draw your target dose
- 4Administer via injection (most commonly SubQ)
- 5Store the vial appropriately and discard sharps safely
If you can handle basic unit conversions and simple division, you can do the dosing math reliably.
A practical rule: any time a needle is about to pierce something, clean the surface first.
Use an alcohol swab to wipe the rubber stopper or skin, then let it fully air dry before proceeding.
Common moments to swab:
- Before adding BAC water: swab both the BAC vial top and peptide vial top
- Before drawing a dose: swab the peptide vial top
- Before injecting: swab the injection site
Missing a swab once is not an automatic disaster, but consistent hygiene reduces infection risk and is worth the habit.
Reconstitution simply means turning the powder into an injectable solution.
A simple example:
- Add 2 mL (which is 2 cc, or 200 "units" on an insulin syringe) of BAC water into the peptide vial
- Mix gently by rolling the vial between your hands (avoid aggressive shaking)
Once it is reconstituted, that vial is ready to dose from. You do not "reconstitute again." Powders ship as powders because that form is generally more stable in transit.
Concentration is:
Concentration = amount of compound ÷ amount of liquidThink of it as "how much active material exists in each mL."
Example:
- Vial contains 10 mg
- You add 2 mL BAC water
- 10 mg ÷ 2 mL = 5 mg/mL
So every 1 mL of that solution contains 5 mg of the peptide.
Once you know your concentration, you can calculate how much liquid to draw.
Volume to draw = target dose ÷ concentrationWorked example:
- Compound: BPC 157
- Target dose: 250 mcg
- Vial size: 5 mg total in the vial
- BAC used: 2 mL
Step A
Convert units
5 mg = 5000 mcg
Step B
Concentration
5000 mcg ÷ 2 mL = 2500 mcg/mL
Step C
Volume needed
250 mcg ÷ 2500 mcg/mL = 0.1 mL
On a 1 mL insulin syringe, 0.1 mL = 10 units.
"Administration" is just the technical way of saying "how it's taken." For most peptides, injection is the practical route because many peptides are broken down in the GI tract if swallowed.
Common injection routes:
- Subcutaneous (SubQ): into subcutaneous fat (often abdomen, upper thigh, upper glute area)
- Intramuscular (IM): into muscle tissue
Learning injection technique:
- Use reputable video tutorials and follow sterile technique
- Always dispose of needles in an appropriate sharps container
People frequently combine compounds into a single syringe to reduce the number of injections.
Practical checkpoints:
- If a mixture becomes cloudy or changes appearance unexpectedly, treat that as a warning sign
- If effects seem weaker than expected over time, consider that degradation or incompatibility may be involved
- If a combination seems problematic, separate them and reintroduce one at a time to identify the culprit
Storage is usually less dramatic than people make it, but better storage can preserve potency longer.
Lyophilized (powder) vials
Stable for long periods; keep cool, dark, and dry. Many store in the fridge or freezer.
Reconstituted vials
Keep refrigerated and use within the window appropriate for that peptide.
Avoid
Repeated heat, direct sunlight, and aggressive shaking.
BAC water
Refrigerate after opening; the benzyl alcohol helps inhibit microbial growth.
Powder is more travel-friendly than reconstituted solution because it is more stable and less temperature-sensitive.
- For short trips, an insulated pouch with a cold pack helps keep reconstituted vials cool
- Keep sharps and vials organized and protected from crushing
- Always check the laws and regulations of your origin and destination before traveling