Omeprazole and pharmacy

I started taking Prilosec a few months ago and didn't notice any acute symptoms, but a week or so ago my pharmacy used a generic form of this
( Omeprazole) and I have been having debilitating headaches every day all day. I thought t was from my arthritis but it continues. Yesterday stopped taking Omeprazole to see if it will make a difference.I woke up today with a MAJOR headache. What I have been trying if 2 2mg Valium and some ibuprofen to see if this helps. At least it eases the pain. I have been taking Relpax (migraine pills) but after a while the headaches come back. This is so bad, guess I will have to go back to the doctor if this doesn't work. Anyone else having bad headaches too? Thanks for letting me let off steam.

I have had diarrhea and a constant headache on one side of my head since starting Omeprazole. I've taken Tylenol and even migraine medication but this just eased the pain. It is 24 hours a day. I think I'd rather take a chance with the heartburn.

I have been taking Prilosec for several years without any side effects..My husband picked up script for me at pharmacy. They were out of Prilosec and filled script with Omerprazole. I have been taking this med for about a month now. Recently I have noticed muscle spasms, heart palpitations, headaches, night sweats. I asked the pharmacist yesterday if this could be related to this medication. She stated that yes this could be related. I will be switching back to Prilosec ASAP.