Gastrointestinal Flashcards
Antacid example
Aluminum hydroxide
Magnesium Carbonate
Alginic acid example
Sodium Alginate
Alginic acid MoA
Increase stomach content and viscosity
reduce reflex
Protein pump inhibitor example
Lansoprazole or Omeprazole
PPI MoA
Irreversibly inhibits H/K ATPase in gastric parietal cells
PPI warnings
Masks oesophageal cancer
increases risk of osteoporosis
Omeprazole CYP interaction
CYP inhibitor
H2 receptor antagonist example
Ranitidine (recalled- carcinogenic)
H2 receptor antagonist Ranitidine MoA
Inhibits H2 on parietal cell
decrease acid secretion
H pylori treatment
PPI + 2 antibacterial
Lansoprazole + clarithromycin + amoxicillin (metronidazole)
Aminosalicylates example
Mesalazine
Aminosalicylates MoA
Release 5-aminosalyic acid (anti-inflammatory) in colon
topical due to enteric coated tablets
First line ulcerative collitus
Muscarinic receptor antagonist (CTZ) example
Hyoscine hydrobromide
Muscarinic receptor antagnist Hyoscine Hydrobromide MoA
Blocks mAChR in the vestibular nucleus at CTZ
motion sickness
H1 receptor antagonist Vestibular nuclei example
Cyclazine, Promethazine
H1 receptor antagonist MoA
blocks H1 receptor at vestibular nuclei
inhibits histaminergic signals from vestibular nuclei to CTZ in medulla
H1 receptor antagonist Cyclazine/Promethazine warnign
Old women & children- confusion and disorientation