@anniegk I did it very very slowly as I remember. So start with replacing Omeprazole with Pepcid one day and wait a week if need be.

There is a rebound with stopping Omeprazole because the body has increased acid production in response to the drug over time. It passes! Based on my experience, just go as slowly as you need to in getting off and on to Pepcid. Is your doctor helpful with this? A pharmacist might be...