I just posted something similar to yours, except with different side effects and differents PPI/H2 blocker meds.
I was on ranitidine, and I felt sick (doc says I coincidentally contracted a virus), but he switched me to rabeprazole just in case.
I have had dizziness, nausea, headaches, chest pains, insomnia, anxiety, red eyes, muscle aches, diarrhea, and probably a couple more that I can't remember.
So far, I've been on Omeprazole (Prilosec), Ranitidine (Zantac) and Rabeprazole (Aciphex, or in Canada it's Pariet). The Prilosec and Aciphex, which are PPI's, in my case, have less side effects than the Zantac which is a H2 blocker.
I'm still seeking answers myself, so all I can say for now is that I feel your pain. Hope you feel better soon!