This has clearly become a touchy topic... WOW!
I agree with the people hinting towards diet. I too am a horrific sufferer of heartburn and reflux, since I was a kid (I remember getting called a hypocondriac by my family!) but as an adult I have found some AWESOME ways to help it.
Yes you can do the normal stuff like avoid spicy food, alcohol, stress etc (life items essentially), but the cool goodies I have found over my years are:
Hot water bottle on your tummy, sounds childish but works SO good for "burning" the pain away.
NEVER eat late or a big meal, grazing bird like is really helpful.
Cut the salt, fat and sugar, essentially eat super fresh and healthy.
Take probiotics.
Ginger tablets.
Slippery elm, this is totally gross as a powder but you can take it in tablet form, it works SO good, I took heaps of it during my pregnancy.

Hope these tips help all sufferers!