Zantac can be a real pain, but in time they actually do get to like it. I copied these tips for you:

In general, the medication is a liquid and the worst problem is that they either shut their mouths, spit it out, gag or throw it up.

With medicines that you are having a hard time getting down, there are a few things you can try. Please note that once your child is used to having the medicine they actually learn to like it, so it may seem very hard in the beginning but eventually you will not have to fight them. So these are the best tips we have”

• Use a really skinny syringe (like the 1ml kind) and put it way in the back of the mouth and squirt it really fast.
• Try giving it slowly, bit by bit, especially when they are unsuspecting
• Prop up the head of the child, lay them down and if necessary restrain arms and legs by putting your legs gently or firmly (depending on age of child) over them. Take syringe or eyedropper and squeeze medication slowly into back cheek pouch of mouth and give time to swallow. Try to avoid the tongue as that is where the most taste receptors are and most medication tastes awful. By syringing into back of cheek it avoids these receptors.
• If they are crying you could squirt it a little each time they breathe
Put in a teat or a special pacifier medicine dropper
• Use a second person to restrain the heads and arms
I know it sounds horrible, but they do eventually get it.

One good thing about reflux meds is that they will only help reflux, if you are getting success with reflux medications, then it is reflux that is disturbing them. Zantac is a med that has been around a really long time, and is very safe for use in infants.

Also know that zantac is very weight sensitive, you need to adjust the dose regularly with increasing weight. Dose can be worked out by---

weight in kg times 5 divide 15 this is the minimum total daily dose, and double that for the maximum.

And in my opinion reflux is under diagnosed, not over diagnosed, the problem is ranging the severity though and whether or not medication is needed.