GI FINAL-PUD Flashcards
Calcium Carbonate
Tums
Magnesium
Aluminum Carbonate
Mylanta, Rolaids
Magnesium
Aluminum
Simethicone
Maalox
Mylanta Classic
Sodium Bicarb
Aspirin
Alka-seltzer
Duration for Antacids
Onset for Antacids
30-60 minutes, doesnt require systemic absorption
O: 3-5 minutes
What is the dosing problem with Antacids?
Frequent dosing throughout the day, 4-6x
What does Magnesium cause?
Diarrhea
What does Aluminum cause?
Constipation
Side Effects of Antacids
Unpleasant taste Constipation Diarrhea Bloating Belching
Why would Antacids be problematic in Renal impairment?
Al+ and Mg+ accumulate
Famotidine
Pepcid
Ranitidine
Zantac
Cimetidine
Tagamet
Nizatidine
Axid
MOA of H2RA
Reversibly inhibits H2 receptors decreasing acid secretion
When should you take H2RAs?
30-60 minutes before meals
HR2A Dose adjustment based on CrCL
CrCL<30 Cimetidine
CrCl<50 Ranitidine
CrCl<60 Famitidine
H2RA that has QT Prolongation
Famotidine
H2RA that increases liver enzymes
Ranitidine
Cimetidine problems…
2C19 Inhibitor
SE: Gynecomastia, impotence, increase SCr