Hi, I had two packs of omeprazole from just before I got pregnant as Ive had a problem with heartburn since my first pregnancy. So it was thought I may have a hiatus hernia but not diagnosed. I found by changing diet it helped the heartburn so didn't use my prescription. It's 20mg once a day. When I asked my midwife on Friday if I could take Zantac she asked if I had tried omeprazole, so I told her about the two packs I had at home. She said to use them. But I've read in the leaflet there is a lower dose of 10mg and I don't know if this would be more appropriate? Is anyone on it and what is their dosage? And are you just on it for pregnancy reasons? I don't know what to do for the best!