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GASTROENTEROLOGY 2
| Pharmacologic Category | Generic | Brand | Classification | Common Indications | Essential Knowledge |
|---|---|---|---|---|---|
| Histamine (H2) antagonist | famotidine (PO, IV) | Pepcid, Zantac 360 | PO: OTC | GERD, erosive esophagitis, SUP | Key Side Effects: headache, constipation, diarrhea, mental status changes |
| Dopamine (D2) antagonist | metoclopramide (PO, IV) | Reglan | Gastroparesis, GERD, nausea, vomiting | Key Side Effects: drowsiness, dystonia, akathisia, EPS, QTc prolongation, diarrhea, hyperprolactinemia | |
| Selective serotonin (5-HT3) antagonist | ondansetron (PO, IV) | Zofran | Nausea, vomiting | Key Side Effects: headache, fatigue, constipation, QTc prolongation | |
| Histamine (H1) antagonist | promethazine (PO, IM, IV, PR) | Phenergan | Motion sickness, nausea, vomiting | Key Side Effects: drowsiness, dry mouth, blurred vision, QTc prolongation, EPS | |
| Histamine (H1) antagonist | meclizine (PO) | Bonine | OTC | Motion sickness, vertigo | Key Side Effects: drowsiness, dry mouth, blurry vision |
| Antidiarrheal | diphenoxylate and atropine (PO) | Lomotil | Diarrhea | Key Side Effects: nausea, confusion, drowsiness, dizziness, xerostomia, tachycardia, urinary retention | |
| Proton pump inhibitor (PPI) | dexlansoprazole (PO) | Dexilant | GERD, PUD, erosive esophagitis, SUP | Key Side Effects: headaches, abdominal pain, nausea, diarrhea, bone fracture, vitamin B12 deficiency, hypomagnesemia, increased risk of Clostridioides difficile associated diarrhea (CDAD) | |
| Proton pump inhibitor (PPI) | esomeprazole (PO, IV) | Nexium | PO: OTC | GERD, PUD, erosive esophagitis, SUP | Key Side Effects: headaches, abdominal pain, nausea, diarrhea, bone fracture, vitamin B12 deficiency, hypomagnesemia, increased risk of Clostridioides difficile associated diarrhea (CDAD) |
| Proton pump inhibitor (PPI) | lansoprazole (PO) | Prevacid | OTC | GERD, PUD, erosive esophagitis, SUP | Key Side Effects: headaches, abdominal pain, nausea, diarrhea, bone fracture, vitamin B12 deficiency, hypomagnesemia, increased risk of Clostridioides difficile associated diarrhea (CDAD) |
| Proton pump inhibitor (PPI) | omeprazole (PO) | Prilosec | OTC | GERD, PUD, erosive esophagitis, SUP | Key Side Effects: headaches, abdominal pain, nausea, diarrhea, bone fracture, vitamin B12 deficiency, hypomagnesemia, increased risk of Clostridioides difficile associated diarrhea (CDAD) |
| Proton pump inhibitor (PPI) | pantoprazole (PO, IV) | Protonix | GERD, PUD, erosive esophagitis, SUP | Key Side Effects: headaches, abdominal pain, nausea, diarrhea, bone fracture, vitamin B12 deficiency, hypomagnesemia, increased risk of Clostridioides difficile associated diarrhea (CDAD) | |
| Gastrointestinal protectant | sucralfate (PO) | Carafate | duodenal ulcers | Key Side Effects: constipation, bezoar formation |