Omeprazole Side Effects: I have been taking the generic Omeprazole for about 12 days. Firs http://www.medications.com/effect/view/30645 I have been taking the generic Omeprazole for about 12 days. First few days i had no symptoms whatsoever. I thought i was in heaven, until now. I am now suffering from lower back pain, shooting pains through out my upper body, chest pressure, stiff neck, an Hi, I have the same symptoms its been more than a year it didn Thu, 27 Nov 2008 19:00:43 -0500 http://www.medications.com/effect/view/30645?item=14870 Hi, I have the same symptoms its been more than a year it didn't go away. I had high blood pressure and was using athenolol and had pains around my chest. I went to doctor and it was related with my stomach so I started Omeprazole 20mg and used it for http://www.medications.com/effect/view/30645?item=14870