Pieter Cohen, an associate professor of medicine at Harvard Medical School who studies dietary supplements

Before reconstitution Lyophilized powder storage: Room temperature: Fine for months Refrigerator (2-8C): Extends shelf life to 12-24 months Freezer (-20C): Maximum shelf life (24-36 months) Keep in original packaging, protect from light Don't: Leave in hot car Expose to direct sunlight Open vial until ready to reconstitute Get moisture inside vial After reconstitution Critical: Refrigerate immediately: Store at 2-8C (36-46F) Main fridge section, not door (too much temperature fluctuation) Use within 28-30 days maximum Discard if cloudy or discolored Daily use: Remove from fridge briefly to draw dose Return to fridge immediately Don't leave out for hours Each removal should be 5 years continuous use) When to stop and consult physician: Severe or persistent side effects Allergic reaction (rash, difficulty breathing) Unexpected symptoms Contraindications Avoid BPC-157 if: Pregnant or breastfeeding (no safety data) Active cancer (theoretical tumor growth concern) Severe allergic reaction to previous dose Use caution if: Taking blood thinners (BPC-157 may affect coagulation) Scheduled for surgery (stop 1-2 weeks before) Significant health conditions (consult physician) See our peptide safety and risks guide

Freezing and thawing can change protein stability and promote aggregation, and the effect depends on the formulation. What signs mean a reconstituted vial should be discarded
If you do the math, that's an 8% concentration firmly in the advanced range
There are avenues for compassionate use in truly dire cases, but a middle-aged athlete wanting to speed up tendon healing is not a case of life-threatening need
Peptide stability in gastric juice is documented - research confirms activity via subcutaneous and oral routes