You can have any of the rennie type tablets......i swear by them.
Rennie,settlers,tums,gaviscon dual action,or boots own brands.
I swear by plain "settlers" from the chemist,you get 3 tubes of them in a blue box quite cheaply. The gaviscon ones are minging!! really make you feel sick. Rennie are cool and tums are ok although sometimes the fruit ones dont help so much.
Hope this helps
