bpc 157 safety fda warning peptide not approved bpc-157 unapproved new drug The FDA has issued clear signals on BPC-157 BPC-157: Miracle Healing Peptide or
Description
Extended continuous exposure to any signaling molecule can lead to receptor downregulation, where cells reduce sensitivity to maintain homeostasis

For a cross-class safety comparison, see the PepPal peptide side effects guide
[11] What side effects should I watch for
Vegetarians and vegans who lack dietary sources of B12

This compound requires bacteriostatic water for reconstitution
