We used a SIDS monitor, gave our baby Zantac, and kept his nose clean regularly. We also bought a special crib wedge that elevates the baby while they sleep.
The monitor helps with peace of mind...but expect to be waken regularly as they are very sensitive, so if the baby is sleeping really soundly, the alarm will sound. But that's what you want right?
Give the baby his/her Zantac with a syringe. You can get this from your pharmacist. I know with this drug you have to be very precise in administering it both time wise and the method you use. I wouldn't put it in the formula, as you probably aren't getting the right amount to him (no guarantee of consistency). You need to get it to him in one shot, at the exact same time everyday. The suspension is somehow time released and should be given BEFORE meals or liquids according to my pediatrician. If you miss a dose, you could change the effectiveness of the medicine. I recommend talking with your pediatrician and or pharmacist about this more. You can even do a search for Zantac online. The manufacturers usually put all of the details on how to administer prescriptions etc. online.
Lastly, keep the baby elevated at least half an hour after feedings. Kids with reflux should never lay down right after a meal, as they will have backup and other problems. You might also want to read "Fussy Baby Book by Dr. William Sears. It is the best on the market about kids with reflux and how to help them. 16 dollars at most book stores.
Hope this helps.