For maximum stability, MELANOTAN II 10mg should be stored in a freezer at -20 degrees C and away from bright light. Most peptides are stable for at least 12-18 months in these conditions. Try to avoid using a frost-free freezer because repeated changes in moisture and temperature may affect stability. Bear in mind peptides that go through repeated freeze-thaw cycles are also susceptible to degradation.
Keep peptides away from sunlight. Dark storage keeps them viable longer. Keep a secure lid on the vial to avoid oxidation.
Allow any frozen peptides to reach room temperature before reconstitution to maintain best quality. Store any remaining lyophilized peptide in the freezer at -20 degrees C.
After reconstituting, MELANOTAN II 10mg may be refrigerated at temperatures below 2 degrees C, although it is not recommended to store excess peptide in solution for any extended period of time. The shelf life of peptides in solution is very limited, especially for certain types of peptides.