Comparison
Cetrorelix vs. Teriparatid
Two peptides side-by-side — identity, evidence base, legal status and known adverse events.
Identity
Category
Research other
Research other
CAS no.
120287-85-6
52232-67-4
Molecular weight
1431.06 g/mol
4117.8 g/mol
Half-life
no data
1 h
Sequence
no data
Ser-Val-Ser-Glu-Ile-Gln-Leu-Met-His-Asn-Leu-Gly-Lys-His-Leu-Asn-Ser-Met-Glu-Arg-Val-Glu-Trp-Leu-Arg-Lys-Lys-Leu-Gln-Asp-Val-His-Asn-PheMechanism of action
Cetrorelix
Cetrorelix competitively and immediately blocks the pituitary GnRH receptor, rapidly suppressing LH and FSH release — without the initial hormone surge ('flare') of GnRH agonists.
Teriparatid
Teriparatide corresponds to the biologically active first 34 amino acids of human parathyroid hormone and binds the PTH-1 receptor on bone and kidney cells. The literature describes that intermittent receptor activation preferentially stimulates the activity of bone-forming osteoblasts, whereas continuously elevated PTH exposure (as in hyperparathyroidism) tends to favor bone resorption. This time-dependent difference is regarded as the mechanistic basis for the bone-anabolic effect observed in studies.
Evidence base
Highest evidence
Human RCT
Human RCT
Studies
0
4
of which in humans
0
4
Effects recorded
2
3
Open conflicts
0
1
Documented adverse events
1
2
Legal status
Full entries
Frequently asked questions
- What is the difference between Cetrorelix and Teriparatid?
- Cetrorelix is classified as "Research other", while Teriparatid is classified as "Research other". Cetrorelix: Cetrorelix is a synthetic decapeptide and GnRH antagonist. It is used in assisted reproduction (IVF) to prevent a premature LH surge during controlled ovarian stimulation. Teriparatid: Teriparatide is the recombinant N-terminal fragment 1-34 of human parathyroid hormone (PTH). It is regulatory-approved and studied in the scientific literature as a bone-anabolic agent for the treatment of osteoporosis. Unlike antiresorptive agents, studies attribute to it an effect that stimulates new bone formation. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Cetrorelix or Teriparatid?
- The highest available evidence level is "Human RCT" for Cetrorelix and "Human RCT" for Teriparatid. 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 Cetrorelix and Teriparatid in Germany and the United States?
- Germany: Cetrorelix — Prescription, Teriparatid — Prescription. United States: Cetrorelix — Prescription, Teriparatid — Prescription. These are factual summaries with source and review date on the individual pages.