This temporal profile is mechanistically consistent with the rate at which high-dose Tyrosine's catecholamine synthesis support kicks in not instantaneous like caffeine, but progressive as the precursor pool is used for dopamine and norepinephrine synthesis.
Session length varies based on dose and tolerance
Many pens require a hold time that is commonly 5-10 seconds, depending on the pen, but your exact device instructions are the standard
Bergmann NC, Gasbjerg LS, Heimburger SM et al (2020) No acute effects of exogenous glucose-dependent insulinotropic polypeptide on energy intake, appetite, or energy expenditure when added to treatment with a long-acting glucagon-like peptide 1 receptor agonist in men with type 2 diabetes
Policy Analysis No
Mounjaro (Tirzepatide): A newer medication that mimics both GLP-1 and GIP (Glucose-Dependent Insulinotropic Polypeptide), improving blood sugar control and promoting weight loss