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Both are typically preservative-free and intended for single use once opened

A February 2026 investigation by Undark established that the overwhelming majority of BPC-157 studies on PubMed include either Sikiric or his colleague Sven Seiwerth as a main author

For a full side-by-side comparison of bacteriostatic water, sterile water, and saline, see our complete diluent comparison guide

Studies show its potential for its ability to support: Tendon and ligament repair Muscle recovery Gut and intestinal healing Nerve regeneration Inflammation reduction Many wellness and regenerative clinics use it under medical supervision for injury and recovery support