When your stomach produces too much acid, it can lead to a burning sensation in the chest, known as heartburn, or more serious conditions like stomach ulcers. Proton Pump Inhibitors (PPIs) are the heavy hitters of the acid-reduction world.
Unlike antacids, which simply neutralise existing acid, or H2 blockers, which reduce acid production partially, PPIs work by “shutting down” the tiny pumps in your stomach lining that produce acid in the first place.
Here are 10 common PPIs used to manage acid-related disorders.
Most PPIs end in the suffix “-prazole,” making them relatively easy to identify.
One of the first and most widely used PPIs, available both over-the-counter and by prescription.
Use: GERD (acid reflux), stomach ulcers, and H. pylori infections.
Dose Range: 10mg to 40mg daily.
Side Effects: Headache, abdominal pain, and nausea.
Known for its versatility, this medication is often used for both treatment and prevention of ulcers caused by NSAID use (like ibuprofen).
Use: Heartburn, gastric ulcers, and erosive oesophagitis.
Dose Range: 15mg to 30mg daily.
Side Effects: Diarrhoea, constipation, and dizziness.
Often marketed as “the purple pill,” this is a refined version of omeprazole that some studies suggest is slightly more effective at healing the esophagus.
Use: Frequent heartburn and long-term treatment of GERD.
Dose Range: 20mg to 40mg daily.
Side Effects: Dry mouth, headache, and flatulence.
A staple in hospital settings because it has fewer drug-to-drug interactions compared to other PPIs.
Use: Short-term healing of the oesophagus and Zollinger-Ellison syndrome.
Dose Range: 20mg to 40mg daily (doses can be higher for severe conditions).
Side Effects: Joint pain, diarrhoea, and rash.
This PPI is known for its rapid onset of action, often providing relief within the first day of treatment.
Use: Duodenal ulcers and acid reflux maintenance.
Dose Range: 20mg once daily.
Side Effects: Sore throat (pharyngitis), back pain, and infection risks.
This utilizes “Dual Delayed Release” technology. One part of the tablet releases immediately, and the second part releases several hours later.
Use: Healing all grades of erosive oesophagitis.
Dose Range: 30mg to 60mg daily.
Side Effects: Upper respiratory tract infections and vomiting.
A combination pill where the sodium bicarbonate protects the omeprazole from being destroyed by stomach acid, allowing for faster absorption.
Use: Immediate relief of heartburn and treatment of ulcers.
Dose Range: 20mg/1100mg to 40mg/1100mg.
Side Effects: Bloating (due to the bicarbonate) and swelling in the hands/feet.
Though not available in all Western markets, it is widely used internationally for its long “half-life,” meaning it stays in the system longer.
Use: Peptic ulcers and GORD.
Dose Range: 5mg to 10mg daily.
Side Effects: Dizziness and mild gastrointestinal upset.
A newer class of PPI (sometimes called a “P-CAB” relative) that provides a very long-lasting suppression of acid, particularly at night.
Use: Severe reflux and nocturnal acid breakthrough.
Dose Range: 20mg to 40mg.
Side Effects: Similar to omeprazole; potential for more significant changes in gut bacteria.
While technically a Potassium-Competitive Acid Blocker (P-CAB), it is often grouped with PPIs because it targets the same “pumps.” It is the newest entry to the market.
Use: Erosive oesophagitis and in combination with antibiotics for H. pylori.
Dose Range: 10mg to 20mg daily.
Side Effects: Stomach ache, indigestion, and altered taste.
| Factor | Description |
| Timing | For best results, take PPIs 30–60 minutes before your first meal of the day. |
| Long-term Risk | Chronic use may lead to low magnesium or B12 levels and a slight increase in bone fracture risk. |
| Rebound Acid | If you stop PPIs suddenly, your stomach may overproduce acid; it is often better to taper off under medical guidance. |
A Friendly Reminder: PPIs are fantastic for healing, but they aren’t meant to be taken forever without a doctor’s review. Because they lower stomach acid, your body might not absorb certain nutrients (like calcium) as well as it used to.
Are you experiencing regular heartburn, or are you looking for a PPI to protect your stomach while taking other medications?
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