Beyond 60 days: Significant degradation
This powerful peptide plays a crucial role in cell migration, proliferation, and differentiation during tissue repair
If you are considering switching between peptides, understanding the concentration differences prevents the kind of dosing confusion that happens when people apply one peptide dose chart to a different peptide
Higher concentration: mixing to ~5,000 mcg/mL keeps injection volumes small even when dosing 500750 mcg twice daily
Unlike pre-filled injection pens that arrive ready to use, compounded tirzepatide in lyophilized form requires precise mixing before it becomes usable
Prior to April 22, 2026, the FDA placed these peptides as Category 2 Bulk drug substances, which have since been nominated for the 503A compounding list