N-Acylserotonsins are a class of bioactive compounds derived from the modification of serotonin through acylation at the N position. These molecules possess diverse pharmacological activities, including modulating neurotransmission and potentially affecting pain perception, mood regulation, and inflammatory responses. They are synthesized endogenously in various tissues, particularly in brain regions involved in emotional processing. Externally produced N-acylserotonsins can be used as research tools to investigate the mechanisms of serotonin-related signaling pathways. These compounds have attracted considerable interest due to their potential therapeutic applications in treating neurological and psychiatric disorders such as depression and anxiety. Their structural diversity allows for tailored drug design, enhancing specificity and efficacy while minimizing side effects.