Cimetidine
A first-generation H2 receptor antagonist that reduces gastric acid secretion by blocking histamine H2 receptors on parietal cells, used for peptic ulcer disease, gastroesophageal reflux disease, and pathological hypersecretory conditions. It is a potent inhibitor of several cytochrome P450 enzymes, leading to clinically significant drug interactions with many medications. It has largely been superseded by proton pump inhibitors for most acid-reducing indications.
Molekularmasse
252,3400 g/mol
LogP
0,40
TPSA
114,00 Ų
Lipinski-Regel der Fünf
Bestanden
Therapeutische Bereiche
Wirkmechanismus
Irreversibly inhibits the hydrogen-potassium ATPase (proton pump) on the apical surface of gastric parietal cells. This blocks the final common pathway of gastric acid secretion, producing profound and sustained acid suppression.
Pharmacokinetics (PK)
Pharmacodynamics (PD)
Irreversibly inhibits the hydrogen-potassium ATPase (proton pump) on the apical surface of gastric parietal cells. This blocks the final common pathway of gastric acid secretion, producing profound and sustained acid …
2D-Struktur
Cite this structure
Embed this structure
SMILES
CN/C(=N\CCSCc1nc[nH]c1C)NC#N
InChI
InChI=1S/C10H16N6S/c1-8-9(16-7-15-8)5-17-4-3-13-10(12-2)14-6-11/h7H,3-5H2,1-2H3,(H,15,16)(H2,12,13,14)
Molecular Formula
C10H16N6S
HBD / HBA
3 / 4
Rotierbare Bindungen
7
Schwere Atome
17
No targets recorded
Target interaction data is not yet available for this drug.
No interactions recorded
Drug interaction data is not yet available for this compound.
No side effects recorded
Side effect data is not yet available for this drug.
Häufig gestellte Fragen
A first-generation H2 receptor antagonist that reduces gastric acid secretion by blocking histamine H2 receptors on parietal cells, used for peptic ulcer disease, gastroesophageal reflux disease, and pathological hypersecretory conditions. It is a potent inhibitor of several cytochrome P450 enzymes, leading to clinically significant drug interactions with many medications. It has largely been superseded by proton pump inhibitors for most acid-reducing indications.
Irreversibly inhibits the hydrogen-potassium ATPase (proton pump) on the apical surface of gastric parietal cells. This blocks the final common pathway of gastric acid secretion, producing profound and sustained acid suppression.
Yes, Cimetidine is an approved drug. It has reached clinical phase 4. It is classified as a Small molecule.
References & Data Sources
- ChEMBL — European Bioinformatics Institute (EBI). CHEMBL30. Open-access bioactivity database.
- PubChem — National Center for Biotechnology Information (NCBI). CID 2756. Chemical information database.
Data aggregated from publicly available pharmacological databases. Last updated 2026-03-04.
Medizinischer Haftungsausschluss
This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.
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