Each form differs in how it is absorbed and utilized by the body
Specifically, melatonin suppresses proinflammatory cytokines (e.g., IL-1, IL-6, tumor necrosis factor- (TNF-), and interferon- (IFN-)) and enhances anti-inflammatory cytokines (e.g., IL-4 and IL-10) by inhibiting the NF-B pathway, although its low-dose transient proinflammatory effects highlight dose- and pathology-dependent dynamics
National Health Service UK
Research Insight Lyophilization dramatically improves peptide stability by removing nearly all water from the formulation
Conclusion In the DSIP nasal spray vs injection debate, there is no strict winner. Both delivery forms of DSIP aim to support better sleep quality, deeper restorative sleep, and improved regulation of sleep-wake cycles and the circadian rhythm but they differ in how you use them and what trade-offs you accept