SANDOSTATIN LAR (octreotide acetate) is a long-acting prescription medication used in the management of certain medical conditions caused by overproduction of hormones, most notably acromegaly and severe diarrhea and flushing episodes associated with carcinoid syndrome and vasoactive intestinal peptide-secreting tumors (VIPomas). It is a synthetic analogue of somatostatin, a naturally occurring inhibitory hormone that regulates the endocrine and nervous systems. SANDOSTATIN LAR works by mimicking the action of somatostatin, thereby reducing the secretion of several hormones, such as growth hormone and insulin-like growth factor-1 (IGF-1), which can help control symptoms and disease progression. It is administered through intramuscular injection, typically once every four weeks, making it a convenient option for long-term treatment.