Before you start taking omeprazole and sodium bicarbonate, inform your doctor:, Of your allergies, Of all the medications you take, including prescription and over-the-counter medications, vitamins, and herbal supplements, Of your medical conditions, If you are pregnant or plan to become pregnant, If you are breastfeeding or plan to breastfeed, Although you may achieve symptomatic relief with omeprazole and sodium bicarbonate, it does not rule out the presence of gastric cancer., Long-term treatment with omeprazole and sodium bicarbonate may cause atrophic gastritis., Omeprazole and sodium bicarbonate can cause kidney inflammation., Long-term treatment with omeprazole and sodium bicarbonate can cause vitamin B-12 deficiency., Omeprazole and sodium bicarbonate can increase the risk of diarrhea associated with C. difficile., Do not take omeprazole and sodium bicarbonate with clopidogrel, St. John's Wort, or rifampin., Long-term treatment with omeprazole and sodium bicarbonate can increase the risk for hip, wrist, or spinal fractures., Long-term treatment with omeprazole and sodium bicarbonate can cause low magnesium levels., Omeprazole and sodium bicarbonate can interfere with diagnostic investigations for Neuroendocrine Tumors. Of your allergies, Of all the medications you take, including prescription and over-the-counter medications, vitamins, and herbal supplements, Of your medical conditions, If you are pregnant or plan to become pregnant, If you are breastfeeding or plan to breastfeed