Pantoprazole
Brand names: Protonix
Class: 🔥 PPIs & H2 Blockers
What examiners watch for is recognition that pantoprazole has the cleanest CYP2C19 profile of the proton pump inhibitors — making it the PPI of choice in patients on clopidogrel. Mechanism and class indications mirror omeprazole: GERD, peptic ulcer disease, erosive esophagitis, and stress-ulcer prophylaxis. IV pantoprazole is standard in hospitalized GI bleed protocols, often with an octreotide drip when variceal bleed is suspected. Long-term harms are the same PPI-class set — C. diff, CAP, hypomagnesemia, B12 deficiency, fractures, AKI, rebound hypersecretion. The exam reflex is to set a stop date or review interval at the time of starting any PPI, not to leave it on indefinitely after a hospital discharge.
✅ Indications
GERD, PUD, erosive esophagitis, GI bleed prophylaxis (IV in hospital).
⚙️ Mechanism of Action
Proton pump inhibitor.
📏 Dosing
40 mg PO daily (or 40 mg IV q12h for upper GI bleed).
🚫 Contraindications
Hypersensitivity.
⚠️ Adverse Effects
Same PPI class effects; least drug interaction profile.
🔬 Monitoring
Same as omeprazole long-term; renal function.
💎 Board Pearls
- 💊 CLEANEST drug interaction profile — pick when patient on multiple meds or on clopidogrel.
- 🩸 IV pantoprazole = go-to in acute upper GI bleed (80 mg bolus + 8 mg/hr drip × 72h).
- 🤰 If a PPI is needed in pregnancy, pantoprazole has the most safety data.
Practice Questions
Which feature is most characteristic of pantoprazole (Protonix) compared with other proton pump inhibitors?
Related Drugs in This Class
- Omeprazole — Prilosec
- Famotidine — Pepcid
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