How long does it take for zantac to work? I thought it was an imediate thing, but don’t honestly know much about h-2 blockers. I do know when I take pepcid complete it is imediate as far as it doesn’t take weeks to get into my system.
it should work pretty immediately- maybe takes time to digest…like a 1/2 an hour or something…I don’t remember it taking a day or two but if I had to guess, I’d say MAYBE a day or two at the most…
also, it can be up to 10mgs per kilo (pediatricians don’t seem to prescribe this- they tend to prescribe 2-4mgs per kilo) and, it should be increased at every small weight gain