Gaviscon vs. Gaviscon Advance: Key Differences for Fast Heartburn Relief
Gaviscon is the standard alginate-antacid formula that floats on stomach acid to stop reflux; Gaviscon Advance adds double-strength alginate plus potassium bicarbonate, forming a firmer, longer-lasting raft that blocks acid even as you bend or lie down.
People grab either box at the pharmacy because the names look identical on the shelf and both promise “heartburn relief.” Yet after a big late-night curry, the one you pick decides whether you’re up at 3 a.m. or sleeping soundly.
Key Differences
Standard Gaviscon uses sodium alginate and antacids; Advance doubles alginate and swaps in potassium bicarbonate for a stronger raft. The result: Advance lasts up to 4 hours vs. 2–3 for the original, and it’s licensed for night reflux and pregnancy heartburn.
Which One Should You Choose?
Choose Gaviscon Advance if symptoms strike at night, after large meals, or during pregnancy; its extra-strength raft stays put even when reclining. Stick with regular Gaviscon for mild daytime discomfort and cost savings—especially if you dose frequently and want less potassium load.
Examples and Daily Life
After a spicy takeaway, take 10 ml of Advance before brushing teeth—no 2 a.m. flare-ups. For desk-lunch acid, two 10 ml shots of regular Gaviscon keep you comfortable without the extra potassium.
Can I take Gaviscon Advance every night?
Yes, it’s safe for nightly use up to the label dose; see a doctor if you need it longer than seven days.
Is Advance safe during pregnancy?
Yes, Gaviscon Advance is the only UK-licensed alginate for pregnancy heartburn and contains no alcohol or sugar.
Do both versions interact with other meds?
Wait two hours between any alginate product and antibiotics, iron, or antifungals to avoid absorption issues.