That preservative is what makes it the default choice for multi-dose research vials a solution reconstituted with bacteriostatic water can typically be accessed multiple times over its usable window without the same contamination risk that a preservative-free solvent would carry
125 GCGR knockout mice produced in one study had islet alpha-cell hyperplasia and these mice were additionally shown to have large increases of glucagon and GLP-1 levels in circulation, but interestingly they had lower plasma glucose levels throughout the day, similar insulin levels and improved glucose tolerance compared to GCGR+ control animals
Once weekly, subcutaneous, same day each week
doi: 10.2119/molmed.2017.00085
Many researchers report that cagrilintide makes food less interesting rather than making eating feel unpleasant
As of 2025, retatrutide remains under investigation and has not yet received regulatory approval from the Medicines and Healthcare products Regulatory Agency (MHRA) or the European Medicines Agency (EMA)