Lamby: Ha! I give out liquid Gaviscon to some of my mums-to-be too but I find the peppermint flavour version to be much more popular than the original. I've seen some of the future mums forego the measuring cup and swig from the bottle!
Don't forget Gaviscon comes in tablet form too.

A couple of other tips... chew gum to get the saliva glands working (it neutralises the extra acidity in the stomach).
Don't eat just before bedtime and try to sleep slightly propped up.