How to use peptides

Five items. All available at PH pharmacies and supply outlets — no prescription required for the consumables.

Peptide vial

Lyophilized (freeze-dried) powder

Bacteriostatic water (BAC water)

NOT regular water — BAC water contains benzyl alcohol to preserve the peptide

Insulin syringes

0.3 ml or 0.5 ml, 31G needle — available at PH pharmacies

Alcohol swabs

For sterilising vial tops and the injection site

Sharps container

Or a thick plastic bottle with a screw lid

Reconstitution converts the lyophilised powder into the injectable solution. Slow water addition and gentle swirling are the entire technique.

1. R-01Clean both rubber tops (peptide vial and BAC water vial) with an alcohol swab
2. R-02Draw 1–2 ml of BAC water into an insulin syringe
3. R-03Slowly drip the water down the inside wall of the peptide vial — never spray onto powder
4. R-04Gently swirl the vial for 1–2 minutes until the powder fully dissolves
5. R-05Never shake vigorously — this denatures the peptide
6. R-06Label the vial with the date of reconstitution
7. R-07Store in the refrigerator (2–8°C) — good for 4–6 weeks

The arithmetic is the same for every peptide: total mg in the vial divided by ml of BAC water added equals concentration. Then dose ÷ concentration equals draw volume.

Use our retatrutide reconstitution calculator to plug in your vial size, BAC water volume, and target dose — it returns the exact insulin-syringe units to draw.

Subcutaneous means into the fat layer just beneath the skin — not into muscle. Rotate sites daily to avoid lumps and scarring.

Best injection sites · rotate daily

• Belly fat (2 inches from navel)
• Love handles
• Front or outer thigh
• Back of upper arm

Injection technique

1. I-01Clean the skin with an alcohol swab and let it dry
2. I-02Pinch 2–3 inches of fat between your fingers
3. I-03Insert the needle at a 90° angle (straight in)
4. I-04Push the plunger slowly over 3–5 seconds
5. I-05Remove the needle and do not rub the site
6. I-06Dispose of the syringe in a sharps container immediately

Frequency varies by peptide. The GLP-1 class is once weekly because of its long half-life; healing and growth-hormone peptides are typically daily.

Most failures are not exotic — they are one of these six. Read the list once and you will avoid every one.

• Using regular sterile water instead of bacteriostatic water (degrades faster)
• Shaking the vial vigorously (denatures the peptide)
• Injecting into muscle instead of subcutaneous fat
• Not rotating injection sites (causes lumps and scarring)
• Storing reconstituted peptides at room temperature
• Drawing air bubbles into the syringe