| Property | Bacteriostatic Water | Sterile Water |
|---|---|---|
| Contains | 0.9% benzyl alcohol | No additives |
| Shelf life after opening | 4–6 weeks refrigerated | 24–48 hours only |
| Multi-draw vial | Yes, safe to re-enter | No, single-use only |
| Prevents bacterial growth | Yes | No |
| pH | Slightly acidic (5.0–7.0) | Neutral (5.0–7.0) |
| Best for | All research peptides | Single-dose use only |
Bacteriostatic water is the harder of the two to buy locally without paying a pharmacy markup on a 10ml vial. Our partner and supplier Primara Labs lists a 30ml bottle at PHP 270, which is roughly six to fifteen reconstitutions depending on vial size. Buy bacteriostatic water in the Philippines
Manila reality
Mercury Drug and Watsons stock sterile water for injection (single-use) at most major Metro Manila branches, useful for the rare single-dose protocol but not what you want for multi-week peptide reconstitution. Neither chain reliably stocks bacteriostatic water with benzyl alcohol; supply is intermittent and branch-dependent. Calling ahead to a Mercury Drug Mall of Asia, Makati Avenue, or Greenbelt branch is faster than walking in.
The reliable in-country path is compounding pharmacies. Manila Doctors Hospital's pharmacy and the cluster of independent compounders along Pasay Road and Salcedo Village in Makati can prepare bacteriostatic water on request (typically a 30 mL multi-dose vial) when written by a physician. The same applies to The Medical City and St. Luke's BGC outpatient pharmacies. Pricing runs roughly USD 8 to 15 per 30 mL vial depending on the compounder.
On Bureau of Customs and import: bacteriostatic water shipped internationally with a peptide order is treated as part of the personal-import declaration. Single vials passing through BOC under personal-use rules typically clear without issue; bulk shipments of injectable solvents draw scrutiny. Most users batch their BAC water with their peptide order from the same supplier rather than running a separate solvent shipment.
December 2025, Salcedo Village
I spent my first peptide order's worth of trial-and-error figuring out the BAC water question in Manila. December 2025: I called four Mercury Drug branches in Makati and BGC asking for bacteriostatic water. Three didn't stock it. The fourth (Greenbelt 5) had a single 30 mL vial behind the counter, expired the previous March. The pharmacist apologized and pointed me to a compounding pharmacy along Pasay Road in Salcedo Village. The compounder accepted a written request from my Makati Med endo, prepared a fresh 30 mL multi-dose vial of bacteriostatic water with 0.9% benzyl alcohol in roughly 90 minutes, and charged USD 12. I've sourced from the same compounder five times since.
On the international shipping path: my last research-peptide order in March 2026 from a supplier I won't name here arrived in Manila with paired BAC water vials. Single shipment, declared as personal-use, cleared Bureau of Customs in 9 days. No additional duties beyond the standard processing fee. The same supplier rejected my prior attempt to order BAC water as a separate shipment: their FAQ specifically says solvents shipped without paired peptide product draw more BOC scrutiny. Worth knowing if you're trying to optimize your import paperwork.
One operational note: I keep my BAC water on the bottom shelf of my BGC condo fridge in a small insulated bag, separated from food. After the third week of opening it for daily reconstitution I noticed a faint cloudiness developing, a sign of either particulate contamination or early bacterial growth despite the benzyl alcohol. Discarded the vial early, replaced from the same compounder. The 4–6 week shelf-life on the label is a maximum, not a target. Your fridge cleanliness, your needle technique, and your ambient humidity all shorten that window.
Reconstitution is sterile work
USP, FDA, peer-reviewed stability
Our partner and supplier
Primara Labs, our partner and supplier, stocks bacteriostatic water 30ml at PHP 270 alongside the research vials it goes with. Stock sits inside the Philippines, so Metro Manila orders dispatch same day and the rest of the country lands in one to three business days. Every order gets 10% off.
View bacteriostatic water and vials