Hi, I am new to this forum, I am a pharmacy technician, Prilosec (which Omeprazole is the generic name) only comes in a extended release, I don't have surgery till the end of the month but if your surgeon told u not to take extended release (which is because you can't absorb it fast enough to work efficiently)then you might want to try another medication for avid, there are plenty of others that come in normal, even rapid release.