Source comparison
Tesamorelin Stability: Reconstituted vs Lyophilized Comparison
Lyophilized powder −20°C to −80°C 18–24 months Minimal. Moisture content below 3% prevents hydrolysis Freezer consistency and desiccant integrity Gold standard for long-term storage. Temperature excursions during shipping or thaw cycles are the primary risk Re
This comparison does not assign a generated winner or score.
- Lyophilized powder
- −20°C to −80°C
- 18–24 months
- Minimal. Moisture content below 3% prevents hydrolysis
- Freezer consistency and desiccant integrity
- Gold standard for long-term storage. Temperature excursions during shipping or thaw cycles are the primary risk
- Reconstituted with bacteriostatic water
- 2–8°C (refrigerated)
- 28 days maximum
- Oxidation (methionine residues), deamidation (asparagine/glutamine), hydrolysis of peptide bonds
- Refrigerator temperature stability and light protection
- Standard protocol for active research use. Exceeding 28 days introduces unacceptable potency variability
- Reconstituted at room temperature
- 20–25°C
- 48–72 hours before significant degradation
- Accelerated oxidation and hydrolysis. Reaction rates increase 3–5× per 10°C rise
- Immediate refrigeration after reconstitution
- Non-viable for any application requiring consistent dosing. Room temperature storage is a hard failure
- Frozen after reconstitution
- −20°C
- Not recommended. Ice crystal formation damages peptide structure
- Physical disruption of tertiary structure during freeze-thaw cycles
- N/A. Reconstituted peptides should never be frozen
- Freezing reconstituted tesamorelin destroys efficacy. Lyophilize before freezing or refrigerate and use within 28 days