What is the brand name for Omeprazole?
The brand name for Omeprazole is Prilosec.
PTCB TOP 200 · #10
Omeprazole
Prilosec
Omeprazole is the generic name for the brand-name drug Prilosec. It is a ppi (proton pump inhibitor) used to treat GERD, ulcers. On the PTCE Top 200 drug list, Omeprazole ranks #10 and is one of the most frequently tested gastrointestinal medications — commonly quizzed on its brand–generic pair, drug class, and key side effects.
| Generic name | Omeprazole |
|---|---|
| Brand name(s) | Prilosec |
| Drug class | PPI (proton pump inhibitor) |
| Class group | Gastrointestinal |
| Common use | GERD, ulcers |
| DEA schedule | Unscheduled |
| Availability | Both prescription and OTC |
What is Omeprazole used for?
Proton pump inhibitor (PPI) for GERD/erosive esophagitis; also used for certain ulcer conditions and hypersecretory states.
What drug class is Omeprazole?
Omeprazole is a PPI (proton pump inhibitor) in the Gastrointestinal group. Knowing the class is the fastest way to predict its uses, side effects, and the brand↔generic pairs the PTCE tests.
Common side effects of Omeprazole
- arrow_rightHeadache
- arrow_rightAbdominal pain
- arrow_rightDiarrhea
- arrow_rightNausea
- arrow_rightGas
Major interactions
- arrow_rightAvoid concomitant use with clopidogrel (omeprazole inhibits CYP2C19, reducing clopidogrel activation)
- arrow_rightDrugs needing acidic pH for absorption (e.g., ketoconazole/atazanavir) may be affected
- arrow_rightWarfarin: monitor INR with start/stop
- arrow_rightHigh‑dose methotrexate: PPIs may increase methotrexate levels/toxicity
Is Omeprazole a controlled substance?
No. Omeprazole is not a federally controlled substance (it is unscheduled by the DEA).
How to remember Omeprazole (PTCE mnemonic)
PRILOsec PRIES acid off — omepra-ZOLE puts the pump 'a-SLEEP'. 30 min before meals; long-term ↓Mg/B12, ↑C. diff.
lightbulb
PTCE exam tip
The suffix -prazole marks a proton pump inhibitor (PPI). Omeprazole comes both OTC and Rx — don't confuse PPIs with H2 blockers like famotidine.
Omeprazole FAQ
What is Omeprazole used for?
Omeprazole is used to treat GERD, ulcers. Proton pump inhibitor (PPI) for GERD/erosive esophagitis; also used for certain ulcer conditions and hypersecretory states.
What drug class is Omeprazole?
Omeprazole is a PPI (proton pump inhibitor) (Gastrointestinal group).
Is Omeprazole a controlled substance?
No. Omeprazole is not a federally controlled substance (it is unscheduled by the DEA).
Study guides that cover Omeprazole
Free, in-depth guides to the patterns behind this drug — no app needed.
Drug suffix cheat sheetthe suffix that gives away this drug's class
How to memorize the Top 200 drugsa method for locking in brand↔generic pairs
Pharmacy math cheat sheetthe five calculation types the PTCE asks
What changed on the 2026 PTCB examthe new domain weights for 2026See all PTCE study guides or browse the full Top 200 drug list.
Drill Omeprazole the way the PTCE asks it
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Related drugs in the Gastrointestinal group
Last reviewed August 7, 2026. Educational use only — not medical advice. Verify clinical specifics with your pharmacist or a current label source such as DailyMed. RxReflex is not affiliated with or endorsed by the Pharmacy Technician Certification Board (PTCB).