Good Morining, I have an 18 month old son that has rcently started Prilosec 20mg in the moring 30 mins before breakfast. Yesterday he started hvaing severe diahria, he already suffered from diahria to begin with. Do any of you know if this could be a side effect of this drug? he also has a cold going on as well. I just got him back to somewhat sleeping through the night since starting the Prilosec and a childrens tum 30 min before bed, and of course he gets a cold so now there’s no more sleeping! If it’s not one thing its another 🙂