Gaviscon (R) Extra Strength Chewable Foamtabs begin working immediately. Provides day & night-time relief of heartburn, acid reflux and GERD (Gastro-Esophageal Reflux Disease) symptoms. Doctor recommended Gaviscon (R) forms a protective foam barrier that blocks acid reflux for hours. Free from aluminium, lactose & gluten. Peppermint flavour; 60 count.