bpc-157 cycle duration and Alcohol: Can You Drink? (6 Studies) The Complete BPC-157 Dosage Guide:
Description
Dizziness or Lightheadedness (Uncommon): Occasionally people may feel faint after the injection, often due to anxiety or discomfort

Spechler SJ, Souza RF
So if your unopened pen sat out overnight, it is not ruined

BioTech Pharma
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