The question of whether peptides expire has a clear answer: yes, and using degraded peptides for neurological applications is not just wasteful but potentially counterproductive
e.g., for fluid resuscitation or vasopressors
As mentioned, GLP-1RAs are increasingly used in the treatment of T2MD owing to their following advantages: lowering of the levels of blood glucose, reducing body weight, improving the function of islet, and exerting potential cardiovascular benefits (206)
However, the mechanisms underlying this association are not yet fully understood, and other factors such as genetics and environmental triggers may also play a role
Peptide Sciences appears to have followed this trend
Tissue concentrations of L-carnitine decease with age, making L-carnitine consumption more important for older adults