You dont have to be taking more of it really frequently to maintain the effect
Withdrawal is not a problem when small doses are taken for short periods or intermittently
134 Kampov-PolevoyA.TsoiM.ZvartauE.NeznanovN.KhalitovE
F.SilvaD
Conjugations to Enhance the Half-Life of Peptide and Protein Drugs While some therapeutic proteins, such as antibodies, inherently possess extended half-lives, many endogenous molecules, including peptide hormones, are susceptible to enzymatic degradation, renal clearance, and rapid receptor-mediated elimination, resulting in a short plasma half-life (hereafter referred to as half-life)
Even if it seems convenient, reused needles become dull very quickly, which can make injections more painful and less precise