It is the difference between a vial that delivers consistent potency across all your doses and one that becomes progressively weaker with each passing day
Timper K, Del Rio-Martin A, Cremer AL, Bremser S, Alber J, Giavalisco P, et al
They can also be used in combination with lifestyle changes for weight loss, although most people regain most or all of the lost weight after stopping medication use
2013 meta-analysis: A meta-analysis of 13 clinical trials including 3,629 adults with acute myocardial infarction who took L-carnitine (from 2.7 g/day for 5 days to 6 g/day for 12 months) versus placebo found that L-carnitine significantly reduced rates of all-cause mortality, ventricular arrhythmias, and new-onset angina
Physiological roles of trehalose in bacteria and yeasts: a comparative analysis