Choosing the Right Water for Peptide Reconstitution (2026)
Not all water is equal when it comes to peptide reconstitution. Using the wrong type can destroy your peptides or introduce harmful bacteria. This guide explains the differences.
Types of Water Compared
| Type | Best For | Why |
|---|---|---|
| Bacteriostatic Water | Peptide reconstitution | Contains 0.9% benzyl alcohol preservative |
| Sterile Water | Single-use injections | No preservative — peptides degrade faster |
| Distilled Water | Not recommended | Not sterile, improper pH |
| Tap Water | Never use | Contains chlorine, minerals, bacteria |
Why Bacteriostatic Water Is Essential
Bacteriostatic water contains benzyl alcohol which:
- Prevents bacterial growth in reconstituted peptides
- Extends shelf life to 30 days
- Maintains peptide stability
- Is safe for subcutaneous injection at 0.9% concentration
Where to Buy
- Medical supply stores
- Online pharmacies
- Peptide suppliers (often bundle with peptides)
- Amazon (verify seller reputation)
Storage
- Store unopened vials at room temperature
- Protect from light
- Use within 1 year of purchase
- Discard if cloudy or contaminated
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