Drugs Flashcards
Antisecretory/cytoprotective classes
antibacterial, PPI, H2 receptor antagonists, Prostaglandin analogs, Mucosal protective agents, Antacids, Combination prep for peptic ulcer
PPI mechanism
irreversibly inhibit H/K ATPase in parietal cells
PPI examples
Omeprazole, Lansoprazole, “Prazole”s
H2 receptor antagonist mechanism
reversibly block H2 histamine receptors to decrease acid production in stomach
H2 blocker examples
Cimetidine, ranitidine, famotidine, nizatidine
Prostaglandin analog mechanism and example
Misoprostol; increases production/secretion of gastric mucous barrier, decrease acid production
mucosal protective agents
sucralfate (bind to ulcer base, physically protect and allow HCO3 secretion to reestablish pH gradient)
Antacids
Al(OH)3, CaCO3, Mg(OH)3
side effects of antacids
affect absorption, bioavailability or urinary excretion of other drugs by altering gastric or urinary pH or delay gastric emptying
can cause hypokalemia
overuse of Al(OH)3
antacid – constipation, hypophosphatemia; proximal muscle weakness, osteodystrophy, seizures
overuse of CaCO3
hypercalcemia, reboud increased acid; can chelate and decrease effectiveness of other drugs (eg tetracycline)
overuse of Mg(OH)2
diarrhea, hyporefelxia, hypotension, cardiac arrest
Prokinetic agents
Metoclopramide
antiemetic agents categories
5HT3 receptor antagonists, DA receptor antagonists, Antihistamines, Anticholinergic agents, Substance P receptor antagonists, Cannabinoids, Glucocorticoids, Benzodizaepines
5HT3 antagonists
antiemetic agents – Ondansetron