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Dr. Grey AI

Peptide

Octreotide (Sandostatin)

Octreotide is a synthetic octapeptide analog of somatostatin with prolonged action. FDA-approved in 1988, it is available as immediate-release injection and long-acting repeatable (LAR) formulation. Primary indications include acromegaly, carcinoid syndrome, and neuroendocrine tumors. The PROMID trial demonstrated significant antiproliferative effects in midgut neuroendocrine tumors, and multiple trials confirm efficacy for GH/IGF-1 suppression in acromegaly.

Research notice. This page is for education and research. Peptides may not be FDA-approved for human use and may only be legally available for research. Talk to a qualified clinician before considering any peptide.

Best evidence
Grade A
Conditions studied
2
Outcomes
13
Graded outcomes
6421

Evidence by condition

  • Strong
  • Moderate
  • Limited
  • Very limited

2 conditions, plus general outcomes

Acromegaly: outcomes studied for Octreotide (Sandostatin)
GradeOutcomeEffectSizeStudiesPeopleStudies list
GH Suppression (Acromegaly)

Meta-analysis shows 56% achieve GH control (<2.5 μg/L). ACROINNOVA 1 showed 72% response rate for IGF-1 normalization with octreotide depot.

Improves (the measure goes down)Large effect20 studies

Studies that measured gh suppression (acromegaly)

and 10 more in the citations list

Acromegaly Symptoms

Treatment reduces soft tissue swelling, headaches, and other symptoms associated with excess GH/IGF-1.

Improves (the measure goes down)Moderate effect20 studies

Studies that measured acromegaly symptoms

and 10 more in the citations list

IGF-1 Normalization

55% achieve IGF-1 normalization in meta-analysis. Oral octreotide maintained response in 65% of previously controlled patients.

Changes; see studiesLarge effect12 studies

Studies that measured igf-1 normalization

and 2 more in the citations list

Neuroendocrine Tumors: outcomes studied for Octreotide (Sandostatin)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Tumor Progression (NETs)

PROMID trial showed median time to tumor progression of 14.3 months vs 6 months placebo (HR 0.34, P<0.001) in metastatic midgut NETs.

Improves (the measure goes down)Large effect18 studies

Studies that measured tumor progression (nets)

and 8 more in the citations list

Carcinoid Syndrome Symptoms

Over 70% of patients achieve significant improvement or resolution of diarrhea and flushing with octreotide LAR treatment.

Improves (the measure goes down)Large effect18 studies

Studies that measured carcinoid syndrome symptoms

and 8 more in the citations list

VIPoma Diarrhea

FDA-approved for watery diarrhea associated with VIP-secreting tumors, with significant symptom improvement.

Improves (the measure goes down)Large effect18 studies

Studies that measured vipoma diarrhea

and 8 more in the citations list

Survival (NETs)

Retrospective data suggest improved 5-year survival (67% vs 18% historical controls) in advanced GEP-NETs treated with octreotide.

Improves (the measure goes up)Moderate effect18 studies

Studies that measured survival (nets)

and 8 more in the citations list

General

General: outcomes studied for Octreotide (Sandostatin)
GradeOutcomeEffectSizeStudiesPeopleStudies list
GI Protection

6 human trials and systematic reviews support this finding. Evidence includes systematic reviews/meta-analyses. Human clinical trial data available.

Improves (the measure goes up)Small effect12 studies

Studies that measured gi protection

and 2 more in the citations list

Anti-Cancer Activity

6 human trials and systematic reviews support this finding. Evidence includes systematic reviews/meta-analyses. Human clinical trial data available.

Improves (the measure goes up)Small effect12 studies

Studies that measured anti-cancer activity

and 2 more in the citations list

Hormone Levels

5 human trials support this finding. Human clinical trial data available.

Improves (the measure goes up)Small effect11 studies

Studies that measured hormone levels

and 1 more in the citations list

Blood Glucose Control

9 preclinical studies support this finding. Primarily preclinical evidence.

Improves (the measure goes down)Moderate effect15 studies

Studies that measured blood glucose control

and 5 more in the citations list

Safety/Tolerability

5 systematic reviews and preclinical studies support this finding. Evidence includes systematic reviews/meta-analyses. Primarily preclinical evidence.

Improves (the measure goes up)Small effect11 studies

Studies that measured safety/tolerability

and 1 more in the citations list

Liver Protection

2 human trials and systematic reviews support this finding. Evidence includes systematic reviews/meta-analyses. Human clinical trial data available.

Improves (the measure goes up)Small effect8 studies

Key findings

  • GH Suppression (Acromegaly)AcromegalyImproves (the measure goes down)
  • Acromegaly SymptomsAcromegalyImproves (the measure goes down)
  • Tumor Progression (NETs)Neuroendocrine TumorsImproves (the measure goes down)

Studies cited

49 studies from PubMed

  1. Variations in Octreotide Dosing in Published Reports of Sulfonylurea Toxicity: A Systematic Review, 1988-Present.Journal of medical toxicology : official journal of the American College of Medical Toxicology, 2025 · PMID 39821850
  2. The use of octreotide in pediatric patients: Practical applications for gastrointestinal disorders and beyond: A narrative review.Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition, 2025 · PMID 40629899
  3. Octreotide Subcutaneous Depot for Acromegaly: A Randomized, Double-blind, Placebo-controlled Phase 3 Trial, ACROINNOVA 1J Clin Endocrinol Metab, 2024 · PMID 39378125
  4. Octreotide efficacy and safety in children with hyperinsulinism: evidence from two Chinese centers.European journal of pediatrics, 2024 · PMID 39565408
  5. Somatostatin Versus Octreotide for Prevention of Postoperative Pancreatic Fistula: The PREFIPS Randomized Clinical Trial: A FRENCH 007-ACHBT Study.Annals of surgery, 2024 · PMID 38662619
  6. Oral Octreotide: A Review of Recent Clinical Trials and Practical Recommendations for Its Use in the Treatment of Patients With AcromegalyPituitary, 2022 · PMID 35452815
  7. IVIVC of Octreotide in PLGA-Glucose Microsphere Formulation, Sandostatin® LAR.AAPS PharmSciTech, 2022 · PMID 36123513
  8. The use of high dose octreotide in management of neonatal chylothorax: Review.Journal of neonatal-perinatal medicine, 2021 · PMID 33843702
  9. Octreotide SC depot in patients with acromegaly and functioning neuroendocrine tumors: a phase 2, multicenter studyCancer Chemother Pharmacol, 2019 · PMID 30535537
  10. Health-Related Quality of Life for Long-Acting Octreotide versus Placebo in Patients with Metastatic Midgut Neuroendocrine Tumors in the Phase 3 PROMID TrialNeuroendocrinology, 2019 · PMID 30852564
  11. Entering the third decade of experience with octreotide LAR in neuroendocrine tumors: A review of current knowledge.Tumori, 2019 · PMID 29714658
  12. Long-acting octreotide treatment has no impact on tumor uptake of 99mTc-HYNIC-TOC in patients with neuroendocrine tumors.Nuclear medicine communications, 2019 · PMID 31365494
  13. ANNIVERSARY REVIEW: Octreotide, 40 years later.European journal of endocrinology, 2019 · PMID 31398712
  14. Octreotide use and safety in infants with hyperinsulinism.Pharmacoepidemiology and drug safety, 2017 · PMID 27910218
  15. Octreotide Is Ineffective in Treating Tumor-Induced Osteomalacia: Results of a Short-Term Therapy.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 2017 · PMID 28459498
  16. Octreotide - A Review of its Use in Treating Neuroendocrine TumoursEur Oncol Haematol, 2016 · PMID 29872467
  17. Safety and efficacy of oral octreotide in acromegaly: results of a multicenter phase III trialJ Clin Endocrinol Metab, 2015 · PMID 25664604
  18. Octreotide s.c. depot provides sustained octreotide bioavailability and similar IGF-1 suppression to octreotide LAR in healthy volunteers.British journal of clinical pharmacology, 2015 · PMID 26076191
  19. Acromegaly clinical trial methodology impact on reported biochemical efficacy rates of somatostatin receptor ligand treatments: a meta-analysisJ Clin Endocrinol Metab, 2014 · PMID 24606084
  20. From somatostatin to octreotide LAR: evolution of a somatostatin analogueGastrointest Endosc, 2013 · PMID 23715783
  21. Octreotide acetate-steroid combination therapy for malignant gastrointestinal obstruction.Anticancer research, 2013 · PMID 24324097
  22. Octreotide for primary moderate to severe acute pancreatitis: a meta-analysis.Hepato-gastroenterology, 2013 · PMID 24298575
  23. Successful treatment of congenital hyperinsulinism with long-acting release octreotide.European journal of endocrinology, 2012 · PMID 22048969
  24. Efficacy of adding high-dose In-111 octreotide therapy during Sandostatin treatment in patients with disseminated neuroendocrine tumors: clinical results of 14 patients.Annals of nuclear medicine, 2011 · PMID 21476058
  25. Sustained-release delivery of octreotide from biodegradable polymeric microspheres.AAPS PharmSciTech, 2011 · PMID 21948321
  26. Antitumor effects of somatostatin analogs in neuroendocrine tumorsJ Exp Clin Cancer Res, 2010 · PMID 22505462
  27. Octreotide's role in the management of sulfonylurea-induced hypoglycemia.Journal of medical toxicology : official journal of the American College of Medical Toxicology, 2010 · PMID 20352540
  28. Octreotide therapy for hepatocellular carcinoma: a systematic review of the evidence from randomized controlled trials.Hepato-gastroenterology, 2010 · PMID 20583430
  29. Placebo-controlled, double-blind, prospective, randomized study on the effect of octreotide LAR in the control of tumor growth in patients with metastatic neuroendocrine midgut tumors: a report from the PROMID Study GroupJ Clin Oncol, 2009 · PMID 19704057
  30. Octreotide LAR: safety and tolerability issues.Expert opinion on drug safety, 2009 · PMID 19998528
  31. Intravenous octreotide test predicts the long term outcome of treatment with octreotide-long-acting repeatable in active acromegalyJ Clin Endocrinol Metab, 2005 · PMID 15935982
  32. Limited predictive value of an acute test with subcutaneous octreotide for long-term IGF-I normalization with Sandostatin LAR in acromegaly.European journal of endocrinology, 2005 · PMID 15994747
  33. Octreotide long-acting release (LAR): a review of its use in the management of acromegaly.Drugs, 2003 · PMID 14609359
  34. Comparison of monthly intramuscular injections of Sandostatin LAR with multiple subcutaneous injections of octreotide in the treatment of acromegaly; effects on growth hormone and other markers of growth hormone secretion.Clinical endocrinology, 1999 · PMID 10396369
  35. Growth hormone binding protein and growth hormone availability in acromegalic patients treated with long-acting octreotide (Sandostatin-LAR).European journal of endocrinology, 1997 · PMID 9037128
  36. Octreotide in hyperinsulinism.The Annals of pharmacotherapy, 1997 · PMID 9034427
  37. Octreotide long-acting release (LAR). A review of its pharmacological properties and therapeutic use in the management of acromegaly.Drugs, 1997 · PMID 9098666
  38. Clinical efficacy of octreotide in the treatment of metastatic neuroendocrine tumors. A study by the Italian Trials in Medical Oncology GroupCancer, 1996 · PMID 8625251
  39. Modified method using a somatostatin analogue, octreotide acetate (Sandostatin) to assess in vivo insulin sensitivity.Endocrine journal, 1996 · PMID 8732463
  40. Octreotide in gastrointestinal motility disorders.Gut, 1994 · PMID 8206395
  41. The role of octreotide (Sandostatin) in non-growth hormone-, non-thyroid-stimulating hormone-, and non-prolactin-secreting adenomas.Metabolism: clinical and experimental, 1992 · PMID 1325596
  42. The effect of somatostatin analog octreotide (Sandostatin) on luteinizing hormone and ovarian steroids in insulin-dependent diabetic women without residual insulin secretion.Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology, 1992 · PMID 1492581
  43. Octreotide and diabetes: theoretical and experimental aspects.Metabolism: clinical and experimental, 1992 · PMID 1518436
  44. Proceedings of the discussion, "Tolerability and safety of Sandostatin".Metabolism: clinical and experimental, 1992 · PMID 1518439
  45. [Octreotide in intestinal pseudo-obstruction?].Zeitschrift fur Gastroenterologie, 1992 · PMID 1632118
  46. Potential gastrointestinal uses of somatostain and its synthetic analogue octreotide.The American journal of gastroenterology, 1990 · PMID 1975156
  47. Debut of a somatostatin analog: octreotide in review.Connecticut medicine, 1989 · PMID 2558839
  48. Octreotide. A review of its pharmacodynamic and pharmacokinetic properties, and therapeutic potential in conditions associated with excessive peptide secretion.Drugs, 1989 · PMID 2689136
  49. [Treatment of gastrointestinal neuroendocrine tumors with the somatostatin analog octreotide (Sandostatin)].Zeitschrift fur Gastroenterologie, 1988 · PMID 2849248