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GI Disorders
ADRs
| Drug | Endocrine/metabolic | CNS AEs | GI AEs | Cardio/Blood | Renal |
|---|---|---|---|---|---|
| Drug | Endocrine/metabolic | CNS AEs | GI AEs | Cardio/Blood | Renal |
| Cimetidine | ↓ libido, impotence, gynecomastia, galactorrhea, breast soreness | hallucinations (elderly) | |||
| Famotidine | ↓ libido, impotence, gynecomastia, galactorrhea, breast soreness | hallucinations (elderly) | |||
| Nizatidine | ↓ libido, impotence, gynecomastia, galactorrhea, breast soreness | hallucinations (elderly) | |||
| Ranitidine | ↓ libido, impotence, gynecomastia, galactorrhea, breast soreness | hallucinations (elderly) | |||
| Omeprazole | B12 deficiency; ↓ mineral absorption; ↑ fracture risk | hypergastrinemia with chronic use | |||
| Esomeprazole | B12 deficiency; ↓ mineral absorption; ↑ fracture risk | hypergastrinemia with chronic use | |||
| Lansoprazole | B12 deficiency; ↓ mineral absorption; ↑ fracture risk | hypergastrinemia with chronic use | |||
| Dexlansoprazole | B12 deficiency; ↓ mineral absorption; ↑ fracture risk | hypergastrinemia with chronic use | |||
| Pantoprazole | B12 deficiency; ↓ mineral absorption; ↑ fracture risk | hypergastrinemia with chronic use | |||
| Rabeprazole | B12 deficiency; ↓ mineral absorption; ↑ fracture risk | hypergastrinemia with chronic use | |||
| Vonoprazan | ↑ fracture risk (high dose or >1 yr) | hypergastrinemia with chronic use | Acute tubulointerstitial nephritis | ||
| Calcium carbonate | Hypercalcemia; alkalosis | Constipation (dose‑related) | |||
| Sodium bicarbonate | Hypernatremia; alkalosis | Gas/abdominal distention, nausea, vomiting | |||
| Aluminum hydroxide | Hypophosphatemia | Constipation | |||
| Magnesium hydroxide | Hypermagnesemia | Diarrhea (dose‑related) | |||
| Bismuth subsalicylate | Constipation | ↑ bleeding risk with anticoagulants | |||
| Sucralfate | Constipation | ||||
| Prochlorperazine | Neuroleptic malignant syndrome; extrapyramidal reactions: tardive dyskinesia, acute dystonia, drug-induced parkinsonism, akathisia | Constipation, dry mouth | Prolonged QTc, tachycardia, orthostatic hypotension | urinary retention | |
| Chlorpromazine | Neuroleptic malignant syndrome; extrapyramidal reactions: tardive dyskinesia, acute dystonia, drug-induced parkinsonism, akathisia | Constipation, dry mouth | Prolonged QTc, tachycardia, orthostatic hypotension | urinary retention | |
| Promethazine | Neuroleptic malignant syndrome; extrapyramidal reactions: tardive dyskinesia, acute dystonia, drug-induced parkinsonism, akathisia | Constipation, dry mouth | Prolonged QTc, tachycardia, orthostatic hypotension | urinary retention | |
| Droperidol | Neuroleptic malignant syndrome; extrapyramidal reactions: Tardive dyskinesia; dizziness, drowsiness | Constipation, dry mouth | Prolonged QTc interval, tachycardia | urinary retention | |
| Haloperidol | Neuroleptic malignant syndrome; extrapyramidal reactions: Tardive dyskinesia; dizziness, drowsiness | Constipation, dry mouth | Prolonged QTc interval, tachycardia | urinary retention | |
| Olanzapine | Weight gain (class effect, note for antiemetic use often short-term) | Sedation | Orthostatic hypotension, ↑QTc; NMS (rare) | ||
| Ondansetron | asthenia (weakness, fatigue), headache | Constipation | QTc prolongation: dose dependent, higher risk with IV | ||
| Granisetron | asthenia (weakness, fatigue), headache | Constipation | QTc prolongation: dose dependent, higher risk with IV | ||
| Palonosetron | asthenia (weakness, fatigue), headache | Constipation | QTc prolongation: dose dependent, higher risk with IV | ||
| Dolasetron | asthenia (weakness, fatigue), headache | Constipation | QTc prolongation: dose dependent, higher risk with IV | ||
| Aprepitant | Dizziness, fatigue, weakness | Constipation, hiccups | |||
| Fosaprepitant | Dizziness, fatigue, weakness | Constipation, hiccups | |||
| Netupitant | Dizziness, fatigue, weakness | Constipation, hiccups | |||
| Fosnetupitant | Dizziness, fatigue, weakness | Constipation, hiccups | |||
| Rolapitant | Dizziness, fatigue, weakness | Constipation, hiccups | |||
| Dronabinol | Somnolence, euphoria | Cannabinoid-induced hyperemesis syndrome (CHS); increased appetite | Orthostatic hypotension | ||
| Nabilone | Cannabinoid-induced hyperemesis syndrome (CHS); increased appetite | Orthostatic hypotension | |||
| Diphenhydramine | Drowsiness, confusion, mydriasis, blurred vision, dizziness, tremors, increased intraocular pressure | urinary retention, dry mouth, constipation | QTc prolongation | ||
| Dimenhydrinate | Drowsiness, confusion, mydriasis, blurred vision, dizziness, tremors, increased intraocular pressure | urinary retention, dry mouth, constipation | |||
| Meclizine | Drowsiness, confusion, mydriasis, blurred vision, dizziness, tremors, increased intraocular pressure | urinary retention, dry mouth, constipation | |||
| Hydroxyzine | Drowsiness, confusion, mydriasis, blurred vision, dizziness, tremors, increased intraocular pressure | urinary retention, dry mouth, constipation | QTc prolongation | ||
| Doxylamine | Drowsiness, confusion, mydriasis, blurred vision, dizziness, tremors, increased intraocular pressure | urinary retention, dry mouth, constipation | |||
| Scopolamine | Drowsiness, confusion, mydriasis, blurred vision, dizziness, tremors, increased intraocular pressure | urinary retention, dry mouth, constipation | |||
| Metoclopramide | Hyperprolactinemia (galactorrhea, gynecomastia) | EPS, CNS depression | Diarrhea | QT prolongation | |
| Pyridoxine (Vitamin B6) | High doses over prolonged periods may cause peripheral neuropathy | Weakness, lethargy (with high doses) | |||
| Ginger | Mild GI discomfort, belching | Potential anticoagulant and hypotensive effects | |||
| Misoprostol | abortifacient | ||||
| Metronidazole | Disulfiram-like effect | abdominal distress, metallic taste |