Comparison
Octreotide vs. Sekretin
Two peptides side-by-side — identity, evidence base, legal status and known adverse events.
Identity
Category
Research other
Research other
CAS no.
83150-76-9
no data
Molecular weight
1019.24 g/mol
3055.5 g/mol
Half-life
1.7 h
no data
Sequence
D-Phe-Cys-Phe-D-Trp-Lys-Thr-Cys-Thr(ol)no data
Mechanism of action
Octreotide
Octreotide is a cyclic octapeptide that selectively binds somatostatin-receptor subtypes SSTR2 and SSTR5. Via G-protein-coupled signalling, adenylyl cyclase is inhibited, reducing the secretion of multiple hormones (growth hormone, IGF-1, glucagon, insulin, VIP, serotonin). Structural stabilisation via a disulfide bridge and D-amino acids extends the half-life relative to natural somatostatin (minutes to several hours).
Sekretin
Secretin binds the Gs-coupled secretin receptor (SCTR) on pancreatic duct cells, opens CFTR chloride channels and triggers secretion of bicarbonate-rich pancreatic fluid and bile flow.
Evidence base
Highest evidence
Human RCT
Human trial
Studies
5
0
of which in humans
4
0
Effects recorded
3
2
Open conflicts
1
0
Documented adverse events
2
1
Legal status
Full entries
Frequently asked questions
- What is the difference between Octreotide and Sekretin?
- Octreotide is classified as "Research other", while Sekretin is classified as "Research other". Octreotide: Synthetic octapeptide somatostatin analog with a longer half-life than endogenous somatostatin. FDA- and EMA-approved since the 1980s for acromegaly and neuroendocrine tumours. Sekretin: Secretin is a 27-amino-acid hormone that regulates pancreatic bicarbonate secretion. As ChiRhoStim it is FDA-approved as a diagnostic agent (pancreatic function test, gastrinoma test, secretin-enhanced MRCP). This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Octreotide or Sekretin?
- The highest available evidence level is "Human RCT" for Octreotide and "Human trial" for Sekretin. A higher evidence level means more robust data, but says nothing about suitability for an individual. The full body of evidence is on each peptide's own page.
- What is the legal status of Octreotide and Sekretin in Germany and the United States?
- Germany: Octreotide — Prescription, Sekretin — Prescription. United States: Octreotide — Prescription, Sekretin — Prescription. These are factual summaries with source and review date on the individual pages.