Comparison
Icatibant vs. Linaclotid
Two peptides side-by-side — identity, evidence base, legal status and known adverse events.
Identity
Category
Research other
Research other
CAS no.
138614-30-9
851199-59-2
Molecular weight
1304.52 g/mol
1526.74 g/mol
Half-life
no data
no data
Sequence
no data
no data
Mechanism of action
Icatibant
Icatibant competitively blocks the bradykinin B2 receptor. Because bradykinin mediates the vascular permeability, swelling and pain typical of hereditary angioedema, the blockade interrupts the acute attack.
Linaclotid
Linaclotide activates the guanylate cyclase-C receptor on the luminal surface of the intestinal epithelium. This raises cyclic GMP (cGMP), increases secretion of chloride and bicarbonate into the lumen, raises stool fluid content and accelerates transit; pain signaling is also modulated.
Evidence base
Highest evidence
Human RCT
Human RCT
Studies
1
0
of which in humans
1
0
Effects recorded
1
2
Open conflicts
0
0
Documented adverse events
1
1
Legal status
Full entries
Frequently asked questions
- What is the difference between Icatibant and Linaclotid?
- Icatibant is classified as "Research other", while Linaclotid is classified as "Research other". Icatibant: Icatibant is a synthetic decapeptide and selective antagonist of the bradykinin B2 receptor. It is approved to treat acute attacks of hereditary angioedema (HAE). Linaclotid: Linaclotide is a 14-amino-acid peptide and guanylate cyclase-C (GC-C) agonist. It is approved for irritable bowel syndrome with constipation (IBS-C) and chronic idiopathic constipation (CIC). This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Icatibant or Linaclotid?
- The highest available evidence level is "Human RCT" for Icatibant and "Human RCT" for Linaclotid. 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 Icatibant and Linaclotid in Germany and the United States?
- Germany: Icatibant — Prescription, Linaclotid — Prescription. United States: Icatibant — Prescription, Linaclotid — Prescription. These are factual summaries with source and review date on the individual pages.