A phase 2 randomised controlled trial published in the New England Journal of Medicine in 2023 demonstrated substantial weight loss in adults with obesity, and phase 3 trials are currently ongoing (see ClinicalTrials
Limitations Not yet FDA-approved (as of 2025)
Growth hormone helps support tissue repair, muscle recovery, metabolism, sleep quality, and healthy aging processes throughout the body
World Psychiatry 14 , 119136 (2015)
More BAC water = lower concentration = more units per dose Aim for early titration steps that still land on clear unit lines Re-run the math each time you step the dose up Frequently asked questions Does this calculator tell me what retatrutide dose to take?+ How much BAC water should I use for a retatrutide vial?+ Why does my retatrutide draw volume change with vial size?+ Can PepSync track a retatrutide titration schedule?+ Primary sources Full reference list Background references for this calculator
What are the long-term risks associated with glucagon-like peptide-1 (GLP-1) receptor agonist therapy?