Understanding Side Effects: Omeprazole vs Gaviscon
Common Omeprazole Side Effects
Omeprazole, available as 20mg capsules through EverydayMeds, may cause several side effects due to its mechanism of reducing stomach acid production. Common reactions include headaches, stomach pain, nausea, diarrhoea, and flatulence. Some patients experience dizziness, drowsiness, or sleep disturbances. These effects typically occur in fewer than 1 in 10 people and often improve as your body adjusts to treatment.
Gaviscon Side Effects Profile
Gaviscon, being an antacid and alginate combination, generally produces fewer systemic side effects compared to omeprazole. The most common issue is constipation, particularly with regular use. Some people may experience mild stomach discomfort or bloating. Gaviscon's localised action means it doesn't significantly affect your body's overall acid production, resulting in a different side effect pattern.
Long-term Considerations
Extended omeprazole use may lead to more serious concerns including vitamin B12 deficiency, magnesium depletion, and potential increased infection risk due to reduced stomach acid. Bone fracture risk may also increase with long-term PPI therapy. Gaviscon doesn't typically cause these long-term effects but may lead to electrolyte imbalances if used excessively, particularly the sodium content in some formulations.
Choosing Between Treatments
Your choice between omeprazole and Gaviscon should consider symptom severity, frequency, and personal tolerance. Omeprazole provides more potent, longer-lasting acid suppression but carries a broader side effect profile. Gaviscon offers quick relief with fewer systemic effects but may be less effective for severe reflux. EverydayMeds also stocks alternative PPIs like lansoprazole 15mg capsules or pantoprazole 20mg tablets if omeprazole causes problematic side effects.
When to Seek Advice
Contact your healthcare provider if you experience severe side effects with either treatment. Signs requiring immediate attention include severe stomach pain, persistent diarrhoea, unusual fatigue, or signs of allergic reaction. Regular monitoring is recommended for long-term omeprazole users to check for nutrient deficiencies and assess ongoing need for treatment.










