retatrutide dosing in units Injection: Package Insert / Prescribing Info Retatrutide Dosing: What You Need

You can read the abstract of this article at 340-OR: LY3437943 (LY) , a Novel Triple GIP/GLP-1/Glucagon Receptor Agonist, Provides Glucose Lowering and Weight Loss in Patients with T2DM after 12 Weeks of Treatment | Diabetes | American Diabetes Association (diabetesjournals.org)

Alternatively, add 1mL for 20mg/mL, making a 4mg dose just 20 units and a 12mg dose 60 units, though the small volumes for lower doses become harder to measure precisely

Tresiba has no role in weight management

Back Lau, J, Bloch, K, Schffer, L, et al (24 Sept 2015) 'Discovery of the once-weekly glucagon-like peptide-1 (glp-1) analogue Semaglutide', Journal Medicinal Chemistry , 58/18