What Do You Need to Inject Peptides? The Complete Supplies Checklist

What Do You Mix With Peptides for Injection?

Bacteriostatic water is sterile water with 0.9% benzyl alcohol used as a preservative. In practical terms, this helps support multi-dose handling compared with plain sterile water, which does not include a preservative. On marketplaces, it is commonly labeled as reconstitution solution.

In practice, most setups compare three options: bacteriostatic water, sterile water, and normal saline. BAC water is commonly used for multi-draw workflows because it includes a preservative. Sterile water and saline can be useful in single-use workflows but do not offer the same preservative profile for repeated vial access.

Labeling and consistency matter as much as the fluid itself. Record peptide name, total mg, total mL added, and reconstitution date as soon as you mix. That makes repeat dosing math easier and reduces handling mistakes when multiple vials are in rotation.

Marketplace wording varies. You may see BAC water sold under terms like reconstitution solution. Confirm preservative and sterile-use details in the listing before purchase, then use a fresh syringe and clean vial top for each draw.

Exact volume depends on your vial size and target concentration. Use the reconstitution calculator to avoid guesswork.

For step-by-step setup, read How to Reconstitute Peptides.

What Needles Do You Use to Inject Peptides?

Injection Syringes (Subcutaneous)

Most research workflows use insulin syringes with 29G to 31G needles in 0.5 mL or 1 mL formats. The unit markings align with common peptide math, where 100 units equals 1 mL on a U-100 syringe.

Gauge choice affects comfort and flow. Lower gauge numbers are wider and move fluid faster; higher gauge numbers are thinner and often feel gentler for subcutaneous delivery. The 29G-31G range is common because it balances practical flow with a smaller needle profile.

Mixing / Reconstitution Syringes

Use a separate 18G to 22G mixing syringe for drawing reconstitution solution and injecting slowly into the vial. This is more efficient than using a fine insulin needle for mixing.

Using separate tools for mixing and injection improves repeatability. A wider mixing setup helps you draw and transfer fluid more smoothly, while keeping fine insulin syringes dedicated for dosing. During reconstitution, inject along the vial wall instead of directly onto the powder.

Keep unit conversion consistent across sessions. On U-100 syringes, 100 units equals 1 mL, so once concentration is set you can convert mcg or mg targets to units without manual guesswork each time.

Sterilization Supplies: Alcohol Swabs and Prep Pads

Use 70% isopropyl prep pads to clean vial stoppers and injection sites. Use one swab per surface and avoid reusing pads across steps.

Sharps Disposal: Why You Need a Sharps Container

Do not place used needles in regular trash. A sharps container helps prevent accidental injury and supports proper disposal according to local rules.

Peptide Storage and Organization Supplies

Storage Case

A dedicated storage case keeps vials, syringes, and prep items together and reduces handling mistakes.

Labeling and Tracking

Label each vial with peptide name, reconstitution date, and concentration. Color coding with colored markers helps prevent mix-ups when managing more than one vial.

Nitrile Gloves for Clean Handling

Powder-free nitrile gloves help reduce contamination risk from skin oils and are a practical add-on for cleaner handling.

Peptide Research Guides and References

Reference material can help standardize naming, storage, and protocol notes. Pair guides with practical tools for dose and reconstitution math. A common option is The Peptides Blue Book.