If you are managing other conditions like diabetes with insulin products, be aware that energy fluctuations may require additional monitoring
The main differences across comparison categories are: Receptor Targets: advantage goes to Retatrutide
doi: 10.1080/01616412.2016.1145914 198 PanagakiTMichaelMHolscherC

Benefits (Research Focus) Triple receptor agonism studied for simultaneous activation of GLP-1, GIP, and glucagon receptors Body composition research investigated for fat-mass and lean-mass partitioning in DIO rodent models Glycemic endpoints examined for fasting glucose and HbA1c parameters in T2D research models Energy expenditure explored for glucagon-mediated thermogenic effects unique among incretin analogs Long-acting profile C20 fatty diacid albumin-binding chemistry for extended half-life research What Researchers Look At Receptor binding affinity and selectivity across GLP-1R / GIPR / GCGR cAMP activation curves in cell lines expressing each receptor subtype Food intake, body weight, and adipose-tissue change in DIO rodent models Hepatic steatosis, ALT/AST, and liver fat fraction endpoints Comparative pharmacology versus semaglutide, tirzepatide, and other incretin analogs Quick Specs Form: Lyophilized white powder Net Peptide Content: 10 mg per vial Quantity: 1 vial Appearance: White to off-white lyophilizate Reconstitution: Bacteriostatic or sterile water (added by the end researcher) Purity: 99% by HPLC Identity: MS-verified (per COA) Storage: Protect from light Identity Basics Compound: Retatrutide Synonyms: LY3437943

Diabetes 53 , 23972403 (2004)
32 Since tirzepatide does not have a GIP (3142) tail, chosen Ala 21 was likely to increase the GLP-1 activity, despite it slightly decreasing the GIP activity