I've been plagued as well, just take a swig out of the bottle, works alot better! the gaviscon double action iss really good, as is the advance, but you have to get that on prescription. My DH gets it on prescription so i take that if its really bad, ask the midwife as they will prescribe it if your really suffering.
I also find eating bread or something to help soak up the acid helps, and avoid fruit juices, fatty or spicy foods, they seem to make it worse. Good luck!