GI Drugs Flashcards
Cimetidine - use (3)
Peptic ulcer
Gastritis
Mild esophageal reflux
Ranitidine - use (3)
Peptic ulcer
Gastritis
Mild esophageal reflux
Famotidine - use (3)
Peptic ulcer
Gastritis
Mild esophageal reflux
Nizatidine - use (3)
Peptic ulcer
Gastritis
Mild esophageal reflux
Cimetidine - mech
H2 blocker - reversible block of histamine H2 receptors, decrease H+ secretion by parietal cells
Ranitidine - mech
H2 blocker - reversible block of histamine H2 receptors, decrease H+ secretion by parietal cells
Famotidine - mech
H2 blocker - reversible block of histamine H2 receptors, decrease H+ secretion by parietal cells
Ranitidine - side fx
Decreases renal excretion of creatinine
Cimetidine - side fx (4)
Decreases renal excretion of creatinine
Inhibits CYP-450
Antiandrogenic effects
Cross BBB (confusion, dizziness, headache) and placenta\
PPI - prazoles - mech
Irreversibly blocks the H/K ATPase in stomach parietal cells
PPI - prazoles - use (4)
Peptic ulcer
Gastritis
Esophageal reflux
Zollinger Ellison syndrome
PPI - prazoles - side fx
Increased risk of C. Diff infection & pneumonia
Decrease serum Mg long term
Bismuth - mech
Bind to ulcer base, providing physical protection and allowing HCO3 secretion to reestablish pH gradient in mucus layer
Bismuth - use (2)
Ulcer healing
Traveler’s diarrhea
Sucralfate - mech
Bind to ulcer base, providing physical protection and allowing HCO3 secretion to reestablish pH gradient in mucus layer
Sucralfate - use (2)
Ulcer healing
Traveler’s diarrhea
Misoprostol - mech (3)
PGE1 analog,
Increases production and secretion of the gastric mucous barrier
Decreases acid production
Misoprostol - use (3)
Prevention of NSAID-induced peptic ulcers (NSAID blocks PGE1)
Maintenance of PDA
Off label for labor induction
Misoprostol - side fx (2)
Diarrhea
Contraindicated in childbearing women
Octreotide - mech
Somatostatin analogue, long acting
Inhibits action of many splanchnic vasoconstriction hormones
Octreotide - use (4)
Acromegaly
Carcinoid syndrome
VIPoma
Esophageal variceal bleeding
Octreotide - side fx (3)
Nausea
Cramps
Steatorhhea
Sulfasalazine - use (2)
Ulcerative colitis
Crohn’s Disease (colitis component)
Sulfasalazine - mech (2)
Combination of sulfapyridine (antibiotic) and 5-ASA (anti-inflammatory)
Activated by colonic bacteria
Sulfasalazine - side fx (4)
Malaise
Nausea
Sulfonamide toxicity
Reversible oligospermia
Ondansetron - mech (3)
5-HT3 antagonist
Decrease vagal stimulation
Powerful central acting anti-emetic
Ondansetron - clinical use
Control vomiting post-op and in patients undergoing cancer chemo
Ondansetron - side fx (3)
Headache
Constipation
QT interval prolongation
Metoclopramide - mech (3)
D2 receptor antagonist
Increases resting tone, contractility, LES tone, motility
Does not influence colon transport time
Metoclopramide - use (2)
Diabetic and postsurgery gastroparesis
Antiemetic