They can come in liquid or tablet form, and major brands include Gaviscon and Rennie. ... The cheapest Gaviscon liquid we found by contrast was around 33p per dose). ... But it's better to discuss ...

Read about how to prevent it, other side effects, and tips for taking prep. Health Conditions ... People must stop taking liquid antacids, such as Gaviscon, 5 days before a colonoscopy.