"Upset stomach", "heartburn", "regurgitation" — the phrases come up daily at the counter in Romanian pharmacies. The older reflex was an antacid (Maalox, Rennie) or an alginate (Gaviscon). Today's reflex is more and more often a box of omeprazole 20 mg, taken "just like that, when it hurts". The difference between the two approaches is not one of "intensity" — it is one of mechanism and recommended duration.
How gastric acid is formed and how you reduce it
The parietal cells in the gastric mucosa have a molecular pump — H+/K+-ATPase — that injects hydrogen ions into the stomach lumen, producing HCl. Proton pump inhibitors (PPIs) irreversibly block this pump: omeprazole, pantoprazole, esomeprazole, lansoprazole, rabeprazole. The maximum effect sets in within 3-5 days (when all pumps have been replaced in the new "inhibited" state).
Simple antacids (calcium carbonate, magnesium and aluminium hydroxide) do not reduce production — they neutralise the acid already present. Fast effect (minutes), short duration (1-3 hours). Alginates (Gaviscon) form a floating layer over the gastric contents and mechanically prevent reflux — useful in post-prandial reflux and in pregnancy.
Quick comparison
| Category | RO examples | Onset | Duration | Main indication |
|---|---|---|---|---|
| Antacids | Maalox, Rennie, Almagel | 5-15 min | 1-3 h | Occasional heartburn |
| Alginate | Gaviscon, Refluxin | 5-15 min | 2-4 h | Post-prandial reflux, pregnancy |
| H2-blockers | Famotidine (Quamatel, Famotidina Atb) | 30-60 min | 8-12 h | Mild GORD, nocturnal prevention |
| PPI | Omeprazole (Helicid, Omeran), Pantoprazole (Controloc, Nolpaza), Esomeprazole (Nexium, Emanera) | 1-2 h, max in 3-5 days | 16-24 h | GORD, ulcer, H. pylori eradication |
When you really need a PPI
- Gastro-oesophageal reflux disease (GORD) with symptoms >2/week or with endoscopically demonstrated oesophagitis.
- Gastric or duodenal ulcer — duration 4-8 weeks.
- H. pylori eradication — PPI + clarithromycin + amoxicillin (triple therapy for 14 days) or quadruple schemes.
- Gastroprotection in patients on long-term NSAIDs with risk factors (age >65, prior ulcer, anticoagulation).
- Zollinger-Ellison syndrome, eosinophilic oesophagitis (off-label but standard).
For occasional heartburn after a heavy dinner — an antacid or an alginate is enough. A PPI "on demand" for a single isolated event is overshooting.
Why "unrationalised chronic PPI" is a problem
Large studies (the VA cohort, JAMA Internal Medicine, BMJ) and recent guidelines (American Gastroenterological Association, BNF) have associated chronic PPI use (>12 months) with:
- Deficiency of vitamin B12, magnesium, iron.
- Increased risk of osteoporotic fractures (HR ~1.2-1.3 vs. non-users).
- Increased risk of community-acquired pneumonia and C. difficile infection.
- A possible rebound effect on abrupt withdrawal: transient hyperacidity.
- Associations (less causally proven) with chronic kidney disease, dementia, myocardial infarction.
The modern recommendation: a PPI at the lowest effective dose, for the shortest necessary duration. Reassessment at 4-8 weeks. "Step-down" to an H2-blocker or as needed.
OTC status in Romania and CNAS reimbursement
Omeprazole 20 mg is OTC in Romania in small packs (max 14 tablets). Pantoprazole 20 mg — OTC. Esomeprazole 20 mg OTC. The higher doses (40 mg) and large packs are P-RF with a medical prescription. On the CNAS list (B/C2), most PPIs have 50% or 90% reimbursement in demonstrated GORD, ulcer, H. pylori eradication. The CANAMED reference price lets you compare the real out-of-pocket cost in the pharmacy. HartaFarmacii shows the prices between Dona, Catena, Help Net, Farmacia Tei and Dr.Max, useful especially for 4-8 week courses.
How to take it correctly
- PPI — 30-60 minutes before breakfast, on an empty stomach. Swallow whole, do not crush (gastro-resistant).
- Antacids — 1-3 hours after a meal or as needed.
- Alginate — after a meal and at bedtime, if there is nocturnal reflux.
- Famotidine — in the evening, if there are nocturnal symptoms.
Watch for interactions
- Omeprazole reduces the activation of clopidogrel (Plavix) — prefer pantoprazole in cardiac patients.
- PPIs reduce the absorption of oral iron, ketoconazole, atazanavir.
- Antacids with aluminium/magnesium — a 2-hour gap from levothyroxine, quinolones, tetracyclines.
Frequently asked questions
- Can I take omeprazole "as needed"?
- For GORD with rare symptoms the "on demand" strategy is fine. For occasional heartburn, an antacid is more appropriate — immediate effect, without accumulation.
- How long can I take omeprazole without asking a doctor?
- OTC: maximum 14 days without reassessment. If symptoms persist — see a doctor.
- Why am I told not to stop the PPI abruptly?
- Tapering over 1-2 weeks reduces the acid rebound.
- I am pregnant, what do I take for reflux?
- First line — an alginate (Gaviscon). Second line — an H2-blocker (famotidine). A PPI only on the doctor's instruction.
- Can I take a PPI with paracetamol/ibuprofen?
- Yes — the NSAID + PPI combination is exactly the gastroprotection protocol for at-risk patients.
- Why does omeprazole no longer work?
- True tolerance is rare. More often: you do not take it 30 min before a meal, you have an untreated H. pylori infection, or it is refractory GORD that needs endoscopic investigation.
Why not all PPIs are equivalent
Although the class works through the same mechanism, there are clinically relevant differences:
- Omeprazole — the first approved (1989), a strong CYP2C19 inhibitor; an important interaction with clopidogrel, citalopram, escitalopram, diazepam, phenytoin.
- Pantoprazole — fewer interactions; preferred in patients on clopidogrel after stenting.
- Esomeprazole — the S-enantiomer of omeprazole; slightly more effective in severe oesophagitis (LA C-D).
- Lansoprazole — faster onset; useful in "resistant nocturnal GORD" at split doses.
- Rabeprazole — metabolism less dependent on CYP2C19, an option in variable metabolisers.
Helicobacter pylori eradication — a concrete scheme
In Romania the prevalence of H. pylori infection in adults exceeds 50%, according to INSP studies. Eradication is usually done in patients with a demonstrated ulcer, chronic atrophic gastritis, MALT lymphoma or functional dyspepsia with a positive test. The standard first-line scheme (14-day duration):
- PPI (omeprazole 20 mg or pantoprazole 40 mg) twice a day, plus
- Amoxicillin 1000 mg twice a day, plus
- Clarithromycin 500 mg twice a day.
In areas with high clarithromycin resistance (over 15%) or after the first scheme fails, bismuth quadruple therapy is preferred: PPI + bismuth subcitrate + tetracycline + metronidazole, 10-14 days. Eradication is verified at >4 weeks post-treatment by a urea breath test or a stool antigen — never by serology, which stays positive for months to years.
Gastro-oesophageal reflux: non-drug measures that really work
Before and together with the PPI, lifestyle changes with demonstrated benefit (NICE, AGA):
- Weight loss (even 5-10% reduces symptoms substantially).
- Raising the head of the bed by 15-20 cm — wedges under the mattress, not just under the head.
- Dinner >3 hours before bedtime.
- Avoiding individual triggers: chocolate, coffee, mint, alcohol, fizzy drinks, spicy foods, large meals.
- Quitting smoking — a direct effect on the lower oesophageal sphincter pressure.
- Watch for clothing tight on the abdomen.
When endoscopy is warranted
"Alarm" signals that require gastroscopy regardless of the response to a PPI:
- Progressive dysphagia, odynophagia.
- Unexplained weight loss.
- GI bleeding (haematemesis, melaena).
- Iron-deficiency anaemia with no obvious cause.
- Age >55 with new dyspeptic symptoms.
- Persistent vomiting.
- Lack of response to 8 weeks of PPI.
Typical cases and what to choose
- Heartburn after a heavy dinner, occasional: an antacid (Maalox/Rennie) or an alginate (Gaviscon), not a PPI.
- GORD with symptoms >2 times/week, without alarms: omeprazole 20 mg in the morning, 4-8 weeks; if it responds — gradual tapering, resume as needed.
- Patient with a demonstrated ulcer and positive H. pylori: a 14-day eradication scheme, then a maintenance PPI until healing.
- Elderly patient on long-term NSAIDs for osteoarthritis: gastroprotection with omeprazole 20 mg/day.
- Pregnant woman with heartburn: lifestyle measures + an alginate as needed; famotidine if insufficient; a PPI only on medical instruction.
Sources
- ANMDMR — SmPCs for omeprazole, pantoprazole, esomeprazole
- AGA — American Gastroenterological Association practice update on chronic PPI use 2022
- Maastricht VI / Florence consensus — H. pylori management 2022
- EMA — esomeprazole safety
- BNF — proton pump inhibitors chapter
- NICE — Gastro-oesophageal reflux disease and dyspepsia in adults (CG184)
- CNAS — reimbursed medicines lists B and C2
- Ministry of Health — CANAMED