if you experienced swelling of the face, rash, or difficulty breathing (signs of a possible allergy), you would need immediate medical attention
Less Commonly Reported Effects Headache, light-headedness, vivid dreams (often attributed to BPC-157), and brief appetite changes are reported less frequently
Therapeutic Goods Administration (Australia)
A Doctor-Reviewed Answer Vitamin B12 is essential for red blood cell production, nerve health, and DNA synthesis
Unopened lyophilized powder is more forgiving and can tolerate brief room-temperature periods, but a reconstituted vial needs consistent refrigeration and should be used within 28 days, the window supported by bacteriostatic water's antimicrobial preservative