Manufacturer labels often list 28 days, but real-world community use shows the peptide and the preservative both hold up well past that with clean handling and proper storage
Concentration = vial mcg / water mL Dose volume = target dose mcg / concentration U-100 units = dose volume mL x 100 Semaglutide 5 mg vial with 2 mL example A 5 mg semaglutide vial mixed with 2 mL gives a concentration of 2.5 mg/mL, or 2,500 mcg/mL
BMJ Journals
Fat Metabolism Support: Encourages lipolysis and reduces adipocyte size, contributing to improved body composition
This observation is the main scientific basis for believing any mucosal route (including nasal) could work, but it is an inference, not a measurement
Use the peptide calculator if you need to run custom numbers for an unusual reconstitution volume, but for the four most common setups, everything is right here