How to Inject Safely

Equipment Needed

• 01Insulin syringes (29-31 gauge, 0.5 mL or 1 mL) — these are thin enough for subcutaneous injection with minimal pain. Available at most pharmacies.
• 02Bacteriostatic water (BAC water) — sterile water with 0.9% benzyl alcohol as a preservative. Used to reconstitute lyophilized peptides. Do not use regular sterile water if you plan to use the vial over multiple days.
• 03Alcohol swabs — 70% isopropyl alcohol pads to sanitize the vial stopper and injection site.
• 04Sharps container — a dedicated container for disposing of used needles safely. Never recap or reuse needles.
• 05Mixing syringe (optional) — a slightly larger syringe (3 mL, 21-23 gauge) can make reconstitution easier, especially with larger volumes of BAC water.

Reconstitution: Mixing Powder + Water

Most peptides arrive as a lyophilized (freeze-dried) powder in a small glass vial. You need to reconstitute them with bacteriostatic water before use.

1. 01Clean the tops of both the peptide vial and the BAC water vial with alcohol swabs. Let them air dry for a few seconds.
2. 02Draw your chosen amount of BAC water into the syringe. A common reconstitution volume is 1-2 mL for easier dose calculation.
3. 03Insert the needle into the peptide vial at an angle, aiming the stream of water at the glass wall of the vial, not directly onto the powder. Peptides are fragile — aggressive mixing can damage them.
4. 04Slowly push the water out of the syringe along the vial wall. Let it trickle down onto the powder.
5. 05Gently swirl the vial — never shake it. Shaking can denature the peptide and reduce its effectiveness. If some powder remains, let it sit for a few minutes and swirl again.
6. 06Once fully dissolved, the solution should be clear. If it remains cloudy or has particles after several minutes, the peptide may be degraded.

Subcutaneous Injection Technique

Subcutaneous (subQ) injection delivers the peptide into the fatty tissue just below the skin. This is the most common route for peptides.

1. 01Wash your hands thoroughly with soap and water.
2. 02Choose your injection site. Common sites include the lower abdomen (at least 2 inches from the belly button), upper thigh, or back of the upper arm. Rotate sites to prevent lipodystrophy (tissue changes from repeated injections in the same spot).
3. 03Clean the site with an alcohol swab in a circular motion. Let it dry completely — injecting through wet alcohol stings.
4. 04Pinch a fold of skin between your thumb and index finger. This lifts the subcutaneous fat away from the muscle beneath.
5. 05Insert the needle at a 45-degree angle (or 90 degrees if you have more body fat at the site). Insert smoothly in one motion — hesitation makes it more uncomfortable.
6. 06Inject slowly. Push the plunger steadily and completely. Injecting too fast can cause a stinging sensation.
7. 07Wait 5 seconds with the needle still inserted, then withdraw. This prevents the solution from leaking out.
8. 08Dispose of the syringe in your sharps container. Never recap a used needle.

Intranasal Administration

Some peptides (e.g., Semax, Selank, NAD+ nasal sprays) are administered through the nose, where they are absorbed through the nasal mucosa and can cross the blood-brain barrier more effectively.

• —Gently blow your nose before administering to clear the nasal passages.
• —Tilt your head slightly forward (not back) and aim the spray toward the outer wall of the nostril, not the septum.
• —Inhale gently through your nose as you spray. Avoid sniffing hard, which pushes the peptide past the absorption site.
• —Alternate nostrils between sprays when the protocol calls for multiple sprays.

Oral Peptides

Storage & Handling

• —Unreconstituted (powder): Store in the refrigerator (36-46°F / 2-8°C) or freezer for long-term storage. Most lyophilized peptides remain stable for months to years when frozen, and weeks to months refrigerated.
• —Reconstituted (liquid): Always refrigerate. Most reconstituted peptides are good for 3-4 weeks when stored with BAC water. Some degrade faster — check specific peptide guidelines.
• —Avoid light and heat. Peptides are sensitive to UV light and temperatures above room temperature. Never leave vials in direct sunlight or a hot car.
• —Do not freeze reconstituted peptides. The freeze-thaw cycle can denature the peptide and reduce potency.

When to See a Doctor

Seek medical attention if you experience any of the following:

• —Signs of infection at the injection site: increasing redness, warmth, swelling, pus, or red streaks radiating outward
• —Fever or chills after injection
• —Allergic reaction: hives, swelling of face/throat, difficulty breathing
• —Persistent numbness or tingling at injection site (possible nerve contact)
• —Unusual or severe side effects not listed in the peptide documentation
• —Any time you are uncertain about what you are experiencing

It is always advisable to work with a knowledgeable healthcare provider who can monitor your progress with bloodwork and adjust protocols based on your individual response.