Comparison
Goserelin vs. Sincalide
Two peptides side-by-side — identity, evidence base, legal status and known adverse events.
Identity
Category
Research other
Research other
CAS no.
65807-02-5
25126-32-3
Molecular weight
1269.43 g/mol
1143.29 g/mol
Half-life
4.2 h
no data
Sequence
pGlu-His-Trp-Ser-Tyr-D-Ser(tBu)-Leu-Arg-Pro-Azgly-NH2Asp-Tyr(SO3H)-Met-Gly-Trp-Met-Asp-Phe-NH2Mechanism of action
Goserelin
As a GnRH agonist, goserelin binds to the GnRH receptors of the pituitary gland. Initial stimulation transiently raises luteinizing hormone (LH) and follicle-stimulating hormone (FSH). With continuous receptor occupancy, however, the receptors become desensitized and down-regulated, which reduces LH and FSH secretion and consequently the production of testosterone or estrogen. This mechanistic relationship is documented in the pharmacological literature.
Sincalide
Sincalide activates CCK receptors, triggering gallbladder contraction and pancreatic enzyme secretion. This effect is used diagnostically to measure the gallbladder ejection fraction (e.g. in HIDA scintigraphy).
Evidence base
Highest evidence
Human RCT
Human trial
Studies
4
0
of which in humans
4
0
Effects recorded
3
1
Open conflicts
1
0
Documented adverse events
2
1
Legal status
Full entries
Frequently asked questions
- What is the difference between Goserelin and Sincalide?
- Goserelin is classified as "Research other", while Sincalide is classified as "Research other". Goserelin: Goserelin is a synthetic decapeptide and an agonist of gonadotropin-releasing hormone (GnRH). The medical literature describes it as a hormonal agent that suppresses the release of sex hormones through sustained receptor stimulation. Regulatory-approved indications include prostate cancer, advanced breast cancer, endometriosis, and endometrial thinning, among others. Sincalide: Sincalide is the synthetic C-terminal octapeptide of the hormone cholecystokinin (CCK-8). As Kinevac it is FDA-approved to stimulate gallbladder contraction for diagnostic imaging. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Goserelin or Sincalide?
- The highest available evidence level is "Human RCT" for Goserelin and "Human trial" for Sincalide. 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 Goserelin and Sincalide in Germany and the United States?
- Germany: Goserelin — Prescription, Sincalide — Unclear. United States: Goserelin — Prescription, Sincalide — Prescription. These are factual summaries with source and review date on the individual pages.