Over £20

- Extra Strength Formula - Gaviscon Advance has double the concentration of sodium alginate of Gaviscon Original so that it forms a strong and r...

- Gets to Work Instantly - Gaviscon Double Action's formulation gets to work in seconds to create a protective barrier that lasts up to 4 hours....

- Gets to Work Instantly - Gaviscon Double Action's formulation gets to work in seconds to create a protective barrier that lasts up to 4 hours...