Omeprazole Side Effects: Terrible ringing in both ears, low B 12. Have been taking this http://www.medications.com/effect/view/25984 Terrible ringing in both ears, low B 12. Have been taking this drug for severe GERD for about 5 months. Does any one know if Prilosec has the same negative side effects that I've had or have been reading about on this forum. Hello! I was put on Prilosec for GERD and suspected Hiatal Herni Tue, 01 Jan 2008 15:47:21 -0500 http://www.medications.com/effect/view/25984?item=3760 Hello! I was put on Prilosec for GERD and suspected Hiatal Hernia - I read that you should take a B vitamin supplement while taking this medication due to it depleting your body of certain nutrients. I have been on it for about 18 days and have just star http://www.medications.com/effect/view/25984?item=3760